/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 21:52:15,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 21:52:15,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 21:52:15,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 21:52:15,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 21:52:15,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 21:52:15,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 21:52:15,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 21:52:15,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 21:52:15,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 21:52:15,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 21:52:15,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 21:52:15,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 21:52:15,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 21:52:15,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 21:52:15,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 21:52:15,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 21:52:15,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 21:52:15,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 21:52:15,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 21:52:15,304 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 21:52:15,327 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 21:52:15,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 21:52:15,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 21:52:15,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 21:52:15,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 21:52:15,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 21:52:15,329 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 21:52:15,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 21:52:15,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 21:52:15,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 21:52:15,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 21:52:15,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 21:52:15,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 21:52:15,330 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 21:52:15,330 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 21:52:15,330 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 21:52:15,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 21:52:15,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 21:52:15,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 21:52:15,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 21:52:15,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 21:52:15,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:52:15,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 21:52:15,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 21:52:15,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 21:52:15,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 21:52:15,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 21:52:15,332 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 21:52:15,332 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 21:52:15,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 21:52:15,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 21:52:15,333 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 21:52:15,333 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 21:52:15,333 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 21:52:15,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 21:52:15,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 21:52:15,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 21:52:15,531 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 21:52:15,532 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 21:52:15,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label53.c [2022-01-10 21:52:15,578 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76b091be7/764381da430b4bd599dc607293d8805a/FLAG06f48f320 [2022-01-10 21:52:16,104 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 21:52:16,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label53.c [2022-01-10 21:52:16,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76b091be7/764381da430b4bd599dc607293d8805a/FLAG06f48f320 [2022-01-10 21:52:16,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76b091be7/764381da430b4bd599dc607293d8805a [2022-01-10 21:52:16,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 21:52:16,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 21:52:16,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 21:52:16,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 21:52:16,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 21:52:16,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:52:16" (1/1) ... [2022-01-10 21:52:16,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f383a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:52:16, skipping insertion in model container [2022-01-10 21:52:16,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:52:16" (1/1) ... [2022-01-10 21:52:16,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 21:52:16,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 21:52:17,073 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label53.c[60419,60432] [2022-01-10 21:52:17,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:52:17,105 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 21:52:17,303 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label53.c[60419,60432] [2022-01-10 21:52:17,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:52:17,347 INFO L208 MainTranslator]: Completed translation [2022-01-10 21:52:17,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:52:17 WrapperNode [2022-01-10 21:52:17,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 21:52:17,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 21:52:17,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 21:52:17,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 21:52:17,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:52:17" (1/1) ... [2022-01-10 21:52:17,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:52:17" (1/1) ... [2022-01-10 21:52:17,523 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1769 [2022-01-10 21:52:17,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 21:52:17,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 21:52:17,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 21:52:17,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 21:52:17,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:52:17" (1/1) ... [2022-01-10 21:52:17,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:52:17" (1/1) ... [2022-01-10 21:52:17,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:52:17" (1/1) ... [2022-01-10 21:52:17,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:52:17" (1/1) ... [2022-01-10 21:52:17,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:52:17" (1/1) ... [2022-01-10 21:52:17,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:52:17" (1/1) ... [2022-01-10 21:52:17,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:52:17" (1/1) ... [2022-01-10 21:52:17,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 21:52:17,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 21:52:17,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 21:52:17,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 21:52:17,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:52:17" (1/1) ... [2022-01-10 21:52:17,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:52:17,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:52:17,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 21:52:17,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 21:52:17,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 21:52:17,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 21:52:17,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 21:52:17,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 21:52:17,810 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 21:52:17,811 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 21:52:19,281 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 21:52:19,292 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 21:52:19,292 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 21:52:19,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:52:19 BoogieIcfgContainer [2022-01-10 21:52:19,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 21:52:19,294 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 21:52:19,295 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 21:52:19,296 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 21:52:19,298 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:52:19" (1/1) ... [2022-01-10 21:52:19,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:52:19 BasicIcfg [2022-01-10 21:52:19,603 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 21:52:19,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 21:52:19,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 21:52:19,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 21:52:19,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:52:16" (1/4) ... [2022-01-10 21:52:19,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747e46ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:52:19, skipping insertion in model container [2022-01-10 21:52:19,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:52:17" (2/4) ... [2022-01-10 21:52:19,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747e46ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:52:19, skipping insertion in model container [2022-01-10 21:52:19,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:52:19" (3/4) ... [2022-01-10 21:52:19,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747e46ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:52:19, skipping insertion in model container [2022-01-10 21:52:19,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:52:19" (4/4) ... [2022-01-10 21:52:19,608 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label53.cTransformedIcfg [2022-01-10 21:52:19,611 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 21:52:19,611 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 21:52:19,638 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 21:52:19,642 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 21:52:19,642 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 21:52:19,653 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:19,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-01-10 21:52:19,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:52:19,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:52:19,662 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:52:19,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:52:19,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1704479853, now seen corresponding path program 1 times [2022-01-10 21:52:19,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:52:19,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802079576] [2022-01-10 21:52:19,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:52:19,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:52:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:52:20,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:52:20,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:52:20,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802079576] [2022-01-10 21:52:20,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802079576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:52:20,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:52:20,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:52:20,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985945856] [2022-01-10 21:52:20,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:52:20,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:52:20,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:52:20,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:52:20,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:20,381 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 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 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:21,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:52:21,464 INFO L93 Difference]: Finished difference Result 857 states and 1498 transitions. [2022-01-10 21:52:21,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:52:21,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 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 194 [2022-01-10 21:52:21,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:52:21,476 INFO L225 Difference]: With dead ends: 857 [2022-01-10 21:52:21,476 INFO L226 Difference]: Without dead ends: 462 [2022-01-10 21:52:21,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:21,481 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 94 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:52:21,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 186 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 21:52:21,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-01-10 21:52:21,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 460. [2022-01-10 21:52:21,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.5381263616557734) internal successors, (706), 459 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:21,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 706 transitions. [2022-01-10 21:52:21,520 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 706 transitions. Word has length 194 [2022-01-10 21:52:21,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:52:21,521 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 706 transitions. [2022-01-10 21:52:21,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:21,521 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 706 transitions. [2022-01-10 21:52:21,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-01-10 21:52:21,524 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:52:21,524 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:52:21,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 21:52:21,524 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:52:21,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:52:21,525 INFO L85 PathProgramCache]: Analyzing trace with hash -444116617, now seen corresponding path program 1 times [2022-01-10 21:52:21,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:52:21,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006745439] [2022-01-10 21:52:21,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:52:21,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:52:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:52:21,637 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 21:52:21,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:52:21,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006745439] [2022-01-10 21:52:21,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006745439] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:52:21,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:52:21,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:52:21,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134264562] [2022-01-10 21:52:21,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:52:21,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:52:21,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:52:21,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:52:21,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:21,641 INFO L87 Difference]: Start difference. First operand 460 states and 706 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:22,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:52:22,515 INFO L93 Difference]: Finished difference Result 1344 states and 2079 transitions. [2022-01-10 21:52:22,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:52:22,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2022-01-10 21:52:22,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:52:22,518 INFO L225 Difference]: With dead ends: 1344 [2022-01-10 21:52:22,518 INFO L226 Difference]: Without dead ends: 886 [2022-01-10 21:52:22,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:22,520 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 21:52:22,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 94 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 21:52:22,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2022-01-10 21:52:22,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 870. [2022-01-10 21:52:22,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.5120828538550057) internal successors, (1314), 869 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:22,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1314 transitions. [2022-01-10 21:52:22,557 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1314 transitions. Word has length 202 [2022-01-10 21:52:22,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:52:22,558 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 1314 transitions. [2022-01-10 21:52:22,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:22,558 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1314 transitions. [2022-01-10 21:52:22,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-01-10 21:52:22,562 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:52:22,562 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:52:22,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 21:52:22,562 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:52:22,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:52:22,563 INFO L85 PathProgramCache]: Analyzing trace with hash -378452623, now seen corresponding path program 1 times [2022-01-10 21:52:22,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:52:22,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487735268] [2022-01-10 21:52:22,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:52:22,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:52:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:52:22,697 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 21:52:22,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:52:22,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487735268] [2022-01-10 21:52:22,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487735268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:52:22,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:52:22,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:52:22,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437264371] [2022-01-10 21:52:22,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:52:22,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:52:22,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:52:22,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:52:22,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:22,700 INFO L87 Difference]: Start difference. First operand 870 states and 1314 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:23,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:52:23,038 INFO L93 Difference]: Finished difference Result 2589 states and 3916 transitions. [2022-01-10 21:52:23,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:52:23,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 214 [2022-01-10 21:52:23,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:52:23,044 INFO L225 Difference]: With dead ends: 2589 [2022-01-10 21:52:23,044 INFO L226 Difference]: Without dead ends: 1721 [2022-01-10 21:52:23,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:23,052 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 360 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 21:52:23,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 555 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 21:52:23,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2022-01-10 21:52:23,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1719. [2022-01-10 21:52:23,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1718 states have (on average 1.5110593713620488) internal successors, (2596), 1718 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:23,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2596 transitions. [2022-01-10 21:52:23,086 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2596 transitions. Word has length 214 [2022-01-10 21:52:23,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:52:23,088 INFO L470 AbstractCegarLoop]: Abstraction has 1719 states and 2596 transitions. [2022-01-10 21:52:23,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:23,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2596 transitions. [2022-01-10 21:52:23,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-01-10 21:52:23,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:52:23,092 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:52:23,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 21:52:23,093 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:52:23,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:52:23,093 INFO L85 PathProgramCache]: Analyzing trace with hash -503738321, now seen corresponding path program 1 times [2022-01-10 21:52:23,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:52:23,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866032093] [2022-01-10 21:52:23,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:52:23,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:52:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:52:23,198 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 21:52:23,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:52:23,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866032093] [2022-01-10 21:52:23,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866032093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:52:23,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:52:23,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:52:23,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083733354] [2022-01-10 21:52:23,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:52:23,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:52:23,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:52:23,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:52:23,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:23,200 INFO L87 Difference]: Start difference. First operand 1719 states and 2596 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:23,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:52:23,937 INFO L93 Difference]: Finished difference Result 5073 states and 7676 transitions. [2022-01-10 21:52:23,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:52:23,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 216 [2022-01-10 21:52:23,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:52:23,947 INFO L225 Difference]: With dead ends: 5073 [2022-01-10 21:52:23,947 INFO L226 Difference]: Without dead ends: 3356 [2022-01-10 21:52:23,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:23,964 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 259 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 21:52:23,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 401 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 21:52:23,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3356 states. [2022-01-10 21:52:24,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3356 to 3354. [2022-01-10 21:52:24,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3353 states have (on average 1.4085893229943334) internal successors, (4723), 3353 states have internal predecessors, (4723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:24,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 4723 transitions. [2022-01-10 21:52:24,083 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 4723 transitions. Word has length 216 [2022-01-10 21:52:24,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:52:24,083 INFO L470 AbstractCegarLoop]: Abstraction has 3354 states and 4723 transitions. [2022-01-10 21:52:24,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:24,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 4723 transitions. [2022-01-10 21:52:24,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-01-10 21:52:24,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:52:24,104 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:52:24,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 21:52:24,104 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:52:24,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:52:24,105 INFO L85 PathProgramCache]: Analyzing trace with hash -183102108, now seen corresponding path program 1 times [2022-01-10 21:52:24,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:52:24,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114545347] [2022-01-10 21:52:24,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:52:24,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:52:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:52:24,383 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:52:24,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:52:24,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114545347] [2022-01-10 21:52:24,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114545347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:52:24,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:52:24,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:52:24,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813716185] [2022-01-10 21:52:24,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:52:24,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:52:24,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:52:24,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:52:24,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:24,385 INFO L87 Difference]: Start difference. First operand 3354 states and 4723 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:25,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:52:25,564 INFO L93 Difference]: Finished difference Result 6708 states and 9448 transitions. [2022-01-10 21:52:25,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:52:25,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 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 220 [2022-01-10 21:52:25,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:52:25,573 INFO L225 Difference]: With dead ends: 6708 [2022-01-10 21:52:25,573 INFO L226 Difference]: Without dead ends: 3356 [2022-01-10 21:52:25,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:25,579 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 238 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 21:52:25,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 141 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 21:52:25,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3356 states. [2022-01-10 21:52:25,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3356 to 3354. [2022-01-10 21:52:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3353 states have (on average 1.329555621831196) internal successors, (4458), 3353 states have internal predecessors, (4458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:25,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 4458 transitions. [2022-01-10 21:52:25,623 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 4458 transitions. Word has length 220 [2022-01-10 21:52:25,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:52:25,625 INFO L470 AbstractCegarLoop]: Abstraction has 3354 states and 4458 transitions. [2022-01-10 21:52:25,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:25,627 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 4458 transitions. [2022-01-10 21:52:25,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-01-10 21:52:25,636 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:52:25,636 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:52:25,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 21:52:25,637 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:52:25,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:52:25,637 INFO L85 PathProgramCache]: Analyzing trace with hash 769321193, now seen corresponding path program 1 times [2022-01-10 21:52:25,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:52:25,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056761880] [2022-01-10 21:52:25,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:52:25,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:52:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:52:25,738 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 21:52:25,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:52:25,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056761880] [2022-01-10 21:52:25,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056761880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:52:25,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:52:25,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:52:25,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342661770] [2022-01-10 21:52:25,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:52:25,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:52:25,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:52:25,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:52:25,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:25,740 INFO L87 Difference]: Start difference. First operand 3354 states and 4458 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:26,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:52:26,679 INFO L93 Difference]: Finished difference Result 8354 states and 11074 transitions. [2022-01-10 21:52:26,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:52:26,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 222 [2022-01-10 21:52:26,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:52:26,691 INFO L225 Difference]: With dead ends: 8354 [2022-01-10 21:52:26,691 INFO L226 Difference]: Without dead ends: 5002 [2022-01-10 21:52:26,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:26,695 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 222 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 21:52:26,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 413 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 21:52:26,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5002 states. [2022-01-10 21:52:26,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5002 to 4994. [2022-01-10 21:52:26,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4994 states, 4993 states have (on average 1.284197877027839) internal successors, (6412), 4993 states have internal predecessors, (6412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:26,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4994 states to 4994 states and 6412 transitions. [2022-01-10 21:52:26,761 INFO L78 Accepts]: Start accepts. Automaton has 4994 states and 6412 transitions. Word has length 222 [2022-01-10 21:52:26,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:52:26,761 INFO L470 AbstractCegarLoop]: Abstraction has 4994 states and 6412 transitions. [2022-01-10 21:52:26,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:26,761 INFO L276 IsEmpty]: Start isEmpty. Operand 4994 states and 6412 transitions. [2022-01-10 21:52:26,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-01-10 21:52:26,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:52:26,768 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:52:26,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 21:52:26,768 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:52:26,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:52:26,768 INFO L85 PathProgramCache]: Analyzing trace with hash -553216276, now seen corresponding path program 1 times [2022-01-10 21:52:26,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:52:26,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280209126] [2022-01-10 21:52:26,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:52:26,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:52:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:52:26,881 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 21:52:26,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:52:26,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280209126] [2022-01-10 21:52:26,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280209126] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:52:26,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:52:26,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:52:26,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953787294] [2022-01-10 21:52:26,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:52:26,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:52:26,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:52:26,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:52:26,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:26,883 INFO L87 Difference]: Start difference. First operand 4994 states and 6412 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:27,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:52:27,847 INFO L93 Difference]: Finished difference Result 11654 states and 14909 transitions. [2022-01-10 21:52:27,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:52:27,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 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 229 [2022-01-10 21:52:27,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:52:27,865 INFO L225 Difference]: With dead ends: 11654 [2022-01-10 21:52:27,865 INFO L226 Difference]: Without dead ends: 6662 [2022-01-10 21:52:27,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:27,871 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 219 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 21:52:27,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 137 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 21:52:27,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6662 states. [2022-01-10 21:52:27,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6662 to 6658. [2022-01-10 21:52:27,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6658 states, 6657 states have (on average 1.2745981673426467) internal successors, (8485), 6657 states have internal predecessors, (8485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:27,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6658 states to 6658 states and 8485 transitions. [2022-01-10 21:52:27,958 INFO L78 Accepts]: Start accepts. Automaton has 6658 states and 8485 transitions. Word has length 229 [2022-01-10 21:52:27,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:52:27,958 INFO L470 AbstractCegarLoop]: Abstraction has 6658 states and 8485 transitions. [2022-01-10 21:52:27,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:27,958 INFO L276 IsEmpty]: Start isEmpty. Operand 6658 states and 8485 transitions. [2022-01-10 21:52:27,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-10 21:52:27,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:52:27,969 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:52:27,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 21:52:27,969 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:52:27,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:52:27,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1265209980, now seen corresponding path program 2 times [2022-01-10 21:52:27,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:52:27,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82052189] [2022-01-10 21:52:27,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:52:27,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:52:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:52:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 21:52:28,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:52:28,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82052189] [2022-01-10 21:52:28,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82052189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:52:28,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:52:28,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:52:28,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606141653] [2022-01-10 21:52:28,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:52:28,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 21:52:28,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:52:28,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 21:52:28,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 21:52:28,088 INFO L87 Difference]: Start difference. First operand 6658 states and 8485 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:29,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:52:29,237 INFO L93 Difference]: Finished difference Result 15355 states and 19591 transitions. [2022-01-10 21:52:29,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 21:52:29,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 236 [2022-01-10 21:52:29,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:52:29,261 INFO L225 Difference]: With dead ends: 15355 [2022-01-10 21:52:29,262 INFO L226 Difference]: Without dead ends: 8699 [2022-01-10 21:52:29,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 21:52:29,271 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 806 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 21:52:29,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [806 Valid, 391 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 21:52:29,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8699 states. [2022-01-10 21:52:29,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8699 to 8693. [2022-01-10 21:52:29,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8693 states, 8692 states have (on average 1.2764611136677404) internal successors, (11095), 8692 states have internal predecessors, (11095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:29,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8693 states to 8693 states and 11095 transitions. [2022-01-10 21:52:29,432 INFO L78 Accepts]: Start accepts. Automaton has 8693 states and 11095 transitions. Word has length 236 [2022-01-10 21:52:29,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:52:29,433 INFO L470 AbstractCegarLoop]: Abstraction has 8693 states and 11095 transitions. [2022-01-10 21:52:29,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:29,434 INFO L276 IsEmpty]: Start isEmpty. Operand 8693 states and 11095 transitions. [2022-01-10 21:52:29,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-01-10 21:52:29,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:52:29,449 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:52:29,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 21:52:29,449 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:52:29,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:52:29,449 INFO L85 PathProgramCache]: Analyzing trace with hash -180841433, now seen corresponding path program 1 times [2022-01-10 21:52:29,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:52:29,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876103458] [2022-01-10 21:52:29,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:52:29,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:52:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:52:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 21:52:29,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:52:29,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876103458] [2022-01-10 21:52:29,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876103458] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:52:29,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:52:29,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:52:29,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844169595] [2022-01-10 21:52:29,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:52:29,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 21:52:29,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:52:29,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 21:52:29,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 21:52:29,593 INFO L87 Difference]: Start difference. First operand 8693 states and 11095 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:31,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:52:31,158 INFO L93 Difference]: Finished difference Result 20070 states and 25722 transitions. [2022-01-10 21:52:31,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 21:52:31,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 238 [2022-01-10 21:52:31,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:52:31,174 INFO L225 Difference]: With dead ends: 20070 [2022-01-10 21:52:31,175 INFO L226 Difference]: Without dead ends: 11379 [2022-01-10 21:52:31,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 21:52:31,184 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 449 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 21:52:31,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 157 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 21:52:31,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11379 states. [2022-01-10 21:52:31,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11379 to 8687. [2022-01-10 21:52:31,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8687 states, 8686 states have (on average 1.2763067004374855) internal successors, (11086), 8686 states have internal predecessors, (11086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8687 states to 8687 states and 11086 transitions. [2022-01-10 21:52:31,299 INFO L78 Accepts]: Start accepts. Automaton has 8687 states and 11086 transitions. Word has length 238 [2022-01-10 21:52:31,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:52:31,299 INFO L470 AbstractCegarLoop]: Abstraction has 8687 states and 11086 transitions. [2022-01-10 21:52:31,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:31,299 INFO L276 IsEmpty]: Start isEmpty. Operand 8687 states and 11086 transitions. [2022-01-10 21:52:31,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-01-10 21:52:31,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:52:31,312 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:52:31,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 21:52:31,313 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:52:31,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:52:31,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2125330549, now seen corresponding path program 1 times [2022-01-10 21:52:31,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:52:31,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463574452] [2022-01-10 21:52:31,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:52:31,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:52:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:52:31,535 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 21:52:31,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:52:31,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463574452] [2022-01-10 21:52:31,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463574452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:52:31,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:52:31,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:52:31,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071393706] [2022-01-10 21:52:31,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:52:31,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:52:31,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:52:31,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:52:31,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:31,537 INFO L87 Difference]: Start difference. First operand 8687 states and 11086 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:32,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:52:32,460 INFO L93 Difference]: Finished difference Result 17372 states and 22170 transitions. [2022-01-10 21:52:32,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:52:32,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 243 [2022-01-10 21:52:32,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:52:32,473 INFO L225 Difference]: With dead ends: 17372 [2022-01-10 21:52:32,473 INFO L226 Difference]: Without dead ends: 8687 [2022-01-10 21:52:32,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:32,481 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 251 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 21:52:32,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 378 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 21:52:32,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8687 states. [2022-01-10 21:52:32,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8687 to 8681. [2022-01-10 21:52:32,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8681 states, 8680 states have (on average 1.2328341013824884) internal successors, (10701), 8680 states have internal predecessors, (10701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:32,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8681 states to 8681 states and 10701 transitions. [2022-01-10 21:52:32,567 INFO L78 Accepts]: Start accepts. Automaton has 8681 states and 10701 transitions. Word has length 243 [2022-01-10 21:52:32,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:52:32,568 INFO L470 AbstractCegarLoop]: Abstraction has 8681 states and 10701 transitions. [2022-01-10 21:52:32,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:32,568 INFO L276 IsEmpty]: Start isEmpty. Operand 8681 states and 10701 transitions. [2022-01-10 21:52:32,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-01-10 21:52:32,577 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:52:32,577 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:52:32,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 21:52:32,578 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:52:32,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:52:32,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1734337210, now seen corresponding path program 1 times [2022-01-10 21:52:32,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:52:32,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125629839] [2022-01-10 21:52:32,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:52:32,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:52:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:52:32,669 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 21:52:32,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:52:32,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125629839] [2022-01-10 21:52:32,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125629839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:52:32,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:52:32,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:52:32,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436154545] [2022-01-10 21:52:32,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:52:32,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:52:32,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:52:32,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:52:32,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:32,671 INFO L87 Difference]: Start difference. First operand 8681 states and 10701 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:33,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:52:33,571 INFO L93 Difference]: Finished difference Result 25365 states and 31252 transitions. [2022-01-10 21:52:33,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:52:33,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 248 [2022-01-10 21:52:33,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:52:33,598 INFO L225 Difference]: With dead ends: 25365 [2022-01-10 21:52:33,598 INFO L226 Difference]: Without dead ends: 16686 [2022-01-10 21:52:33,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:33,609 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 241 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 21:52:33,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 424 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 21:52:33,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16686 states. [2022-01-10 21:52:33,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16686 to 16677. [2022-01-10 21:52:33,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16677 states, 16676 states have (on average 1.213180618853442) internal successors, (20231), 16676 states have internal predecessors, (20231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:33,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16677 states to 16677 states and 20231 transitions. [2022-01-10 21:52:33,794 INFO L78 Accepts]: Start accepts. Automaton has 16677 states and 20231 transitions. Word has length 248 [2022-01-10 21:52:33,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:52:33,794 INFO L470 AbstractCegarLoop]: Abstraction has 16677 states and 20231 transitions. [2022-01-10 21:52:33,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:33,794 INFO L276 IsEmpty]: Start isEmpty. Operand 16677 states and 20231 transitions. [2022-01-10 21:52:33,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-01-10 21:52:33,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:52:33,811 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:52:33,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 21:52:33,811 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:52:33,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:52:33,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1189339560, now seen corresponding path program 1 times [2022-01-10 21:52:33,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:52:33,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555282571] [2022-01-10 21:52:33,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:52:33,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:52:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:52:34,105 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 21:52:34,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:52:34,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555282571] [2022-01-10 21:52:34,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555282571] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:52:34,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:52:34,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:52:34,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787208232] [2022-01-10 21:52:34,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:52:34,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 21:52:34,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:52:34,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 21:52:34,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 21:52:34,106 INFO L87 Difference]: Start difference. First operand 16677 states and 20231 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:35,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:52:35,306 INFO L93 Difference]: Finished difference Result 57369 states and 69710 transitions. [2022-01-10 21:52:35,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 21:52:35,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 250 [2022-01-10 21:52:35,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:52:35,354 INFO L225 Difference]: With dead ends: 57369 [2022-01-10 21:52:35,354 INFO L226 Difference]: Without dead ends: 40694 [2022-01-10 21:52:35,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 21:52:35,377 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 596 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:52:35,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 616 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 21:52:35,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40694 states. [2022-01-10 21:52:35,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40694 to 30219. [2022-01-10 21:52:35,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30219 states, 30218 states have (on average 1.2141438877490238) internal successors, (36689), 30218 states have internal predecessors, (36689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:35,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30219 states to 30219 states and 36689 transitions. [2022-01-10 21:52:35,849 INFO L78 Accepts]: Start accepts. Automaton has 30219 states and 36689 transitions. Word has length 250 [2022-01-10 21:52:35,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:52:35,850 INFO L470 AbstractCegarLoop]: Abstraction has 30219 states and 36689 transitions. [2022-01-10 21:52:35,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:35,850 INFO L276 IsEmpty]: Start isEmpty. Operand 30219 states and 36689 transitions. [2022-01-10 21:52:35,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-01-10 21:52:35,880 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:52:35,880 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:52:35,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 21:52:35,881 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:52:35,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:52:35,881 INFO L85 PathProgramCache]: Analyzing trace with hash -124916527, now seen corresponding path program 1 times [2022-01-10 21:52:35,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:52:35,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29261625] [2022-01-10 21:52:35,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:52:35,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:52:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:52:36,089 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-01-10 21:52:36,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:52:36,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29261625] [2022-01-10 21:52:36,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29261625] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:52:36,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:52:36,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:52:36,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301730228] [2022-01-10 21:52:36,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:52:36,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 21:52:36,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:52:36,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 21:52:36,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 21:52:36,091 INFO L87 Difference]: Start difference. First operand 30219 states and 36689 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:37,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:52:37,511 INFO L93 Difference]: Finished difference Result 91428 states and 111216 transitions. [2022-01-10 21:52:37,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 21:52:37,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 264 [2022-01-10 21:52:37,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:52:37,589 INFO L225 Difference]: With dead ends: 91428 [2022-01-10 21:52:37,589 INFO L226 Difference]: Without dead ends: 61211 [2022-01-10 21:52:37,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 21:52:37,726 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 577 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 21:52:37,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 547 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 21:52:37,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61211 states. [2022-01-10 21:52:38,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61211 to 61094. [2022-01-10 21:52:38,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61094 states, 61093 states have (on average 1.212348386885568) internal successors, (74066), 61093 states have internal predecessors, (74066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:38,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61094 states to 61094 states and 74066 transitions. [2022-01-10 21:52:38,641 INFO L78 Accepts]: Start accepts. Automaton has 61094 states and 74066 transitions. Word has length 264 [2022-01-10 21:52:38,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:52:38,641 INFO L470 AbstractCegarLoop]: Abstraction has 61094 states and 74066 transitions. [2022-01-10 21:52:38,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:38,641 INFO L276 IsEmpty]: Start isEmpty. Operand 61094 states and 74066 transitions. [2022-01-10 21:52:38,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-01-10 21:52:38,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:52:38,673 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:52:38,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 21:52:38,674 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:52:38,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:52:38,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1610601697, now seen corresponding path program 1 times [2022-01-10 21:52:38,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:52:38,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434011212] [2022-01-10 21:52:38,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:52:38,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:52:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:52:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 21:52:38,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:52:38,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434011212] [2022-01-10 21:52:38,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434011212] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:52:38,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:52:38,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:52:38,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941674084] [2022-01-10 21:52:38,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:52:38,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:52:38,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:52:38,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:52:38,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:38,823 INFO L87 Difference]: Start difference. First operand 61094 states and 74066 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:40,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:52:40,341 INFO L93 Difference]: Finished difference Result 160159 states and 194168 transitions. [2022-01-10 21:52:40,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:52:40,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 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 264 [2022-01-10 21:52:40,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:52:40,485 INFO L225 Difference]: With dead ends: 160159 [2022-01-10 21:52:40,485 INFO L226 Difference]: Without dead ends: 99067 [2022-01-10 21:52:40,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:40,534 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 200 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 21:52:40,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 173 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 21:52:40,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99067 states. [2022-01-10 21:52:41,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99067 to 99043. [2022-01-10 21:52:41,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99043 states, 99042 states have (on average 1.147927142020557) internal successors, (113693), 99042 states have internal predecessors, (113693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:42,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99043 states to 99043 states and 113693 transitions. [2022-01-10 21:52:42,423 INFO L78 Accepts]: Start accepts. Automaton has 99043 states and 113693 transitions. Word has length 264 [2022-01-10 21:52:42,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:52:42,423 INFO L470 AbstractCegarLoop]: Abstraction has 99043 states and 113693 transitions. [2022-01-10 21:52:42,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:42,424 INFO L276 IsEmpty]: Start isEmpty. Operand 99043 states and 113693 transitions. [2022-01-10 21:52:42,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-01-10 21:52:42,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:52:42,457 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 21:52:42,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 21:52:42,458 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:52:42,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:52:42,458 INFO L85 PathProgramCache]: Analyzing trace with hash -7514741, now seen corresponding path program 1 times [2022-01-10 21:52:42,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:52:42,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895667073] [2022-01-10 21:52:42,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:52:42,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:52:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:52:42,712 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:52:42,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:52:42,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895667073] [2022-01-10 21:52:42,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895667073] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:52:42,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:52:42,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:52:42,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40560213] [2022-01-10 21:52:42,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:52:42,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:52:42,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:52:42,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:52:42,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:42,714 INFO L87 Difference]: Start difference. First operand 99043 states and 113693 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:44,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:52:44,524 INFO L93 Difference]: Finished difference Result 233831 states and 266662 transitions. [2022-01-10 21:52:44,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:52:44,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 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 268 [2022-01-10 21:52:44,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:52:44,742 INFO L225 Difference]: With dead ends: 233831 [2022-01-10 21:52:44,742 INFO L226 Difference]: Without dead ends: 134790 [2022-01-10 21:52:44,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:44,828 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 162 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 21:52:44,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 185 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 21:52:44,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134790 states. [2022-01-10 21:52:46,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134790 to 132436. [2022-01-10 21:52:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132436 states, 132435 states have (on average 1.1344131083172877) internal successors, (150236), 132435 states have internal predecessors, (150236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:46,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132436 states to 132436 states and 150236 transitions. [2022-01-10 21:52:46,707 INFO L78 Accepts]: Start accepts. Automaton has 132436 states and 150236 transitions. Word has length 268 [2022-01-10 21:52:46,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:52:46,707 INFO L470 AbstractCegarLoop]: Abstraction has 132436 states and 150236 transitions. [2022-01-10 21:52:46,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:46,707 INFO L276 IsEmpty]: Start isEmpty. Operand 132436 states and 150236 transitions. [2022-01-10 21:52:46,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-01-10 21:52:46,751 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:52:46,751 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:52:46,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 21:52:46,752 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:52:46,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:52:46,752 INFO L85 PathProgramCache]: Analyzing trace with hash 560298629, now seen corresponding path program 1 times [2022-01-10 21:52:46,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:52:46,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569109715] [2022-01-10 21:52:46,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:52:46,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:52:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:52:47,039 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-01-10 21:52:47,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:52:47,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569109715] [2022-01-10 21:52:47,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569109715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:52:47,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:52:47,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:52:47,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684854310] [2022-01-10 21:52:47,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:52:47,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:52:47,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:52:47,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:52:47,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:47,050 INFO L87 Difference]: Start difference. First operand 132436 states and 150236 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:49,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:52:49,004 INFO L93 Difference]: Finished difference Result 312063 states and 353886 transitions. [2022-01-10 21:52:49,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:52:49,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 0 states have call successors, (0), 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 287 [2022-01-10 21:52:49,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:52:49,260 INFO L225 Difference]: With dead ends: 312063 [2022-01-10 21:52:49,260 INFO L226 Difference]: Without dead ends: 179629 [2022-01-10 21:52:49,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:52:49,329 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 198 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 21:52:49,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 191 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 21:52:49,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179629 states. [2022-01-10 21:52:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179629 to 172309. [2022-01-10 21:52:51,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172309 states, 172308 states have (on average 1.112020335677972) internal successors, (191610), 172308 states have internal predecessors, (191610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:51,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172309 states to 172309 states and 191610 transitions. [2022-01-10 21:52:51,823 INFO L78 Accepts]: Start accepts. Automaton has 172309 states and 191610 transitions. Word has length 287 [2022-01-10 21:52:51,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:52:51,823 INFO L470 AbstractCegarLoop]: Abstraction has 172309 states and 191610 transitions. [2022-01-10 21:52:51,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:51,823 INFO L276 IsEmpty]: Start isEmpty. Operand 172309 states and 191610 transitions. [2022-01-10 21:52:51,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-01-10 21:52:51,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:52:51,868 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:52:51,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 21:52:51,869 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:52:51,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:52:51,869 INFO L85 PathProgramCache]: Analyzing trace with hash -78683363, now seen corresponding path program 1 times [2022-01-10 21:52:51,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:52:51,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352343534] [2022-01-10 21:52:51,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:52:51,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:52:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:52:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-01-10 21:52:51,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:52:51,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352343534] [2022-01-10 21:52:51,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352343534] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:52:51,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184825740] [2022-01-10 21:52:51,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:52:51,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:52:51,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:52:52,008 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 21:52:52,011 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 21:52:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:52:52,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 8222 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 21:52:52,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:52:53,363 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-10 21:52:53,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 21:52:53,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184825740] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:52:53,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 21:52:53,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 21:52:53,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353598685] [2022-01-10 21:52:53,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:52:53,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:52:53,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:52:53,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:52:53,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 21:52:53,365 INFO L87 Difference]: Start difference. First operand 172309 states and 191610 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:55,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:52:55,500 INFO L93 Difference]: Finished difference Result 399040 states and 441219 transitions. [2022-01-10 21:52:55,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:52:55,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 294 [2022-01-10 21:52:55,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:52:55,901 INFO L225 Difference]: With dead ends: 399040 [2022-01-10 21:52:55,902 INFO L226 Difference]: Without dead ends: 226733 [2022-01-10 21:52:56,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 21:52:56,336 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 260 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 21:52:56,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 95 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 21:52:56,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226733 states. [2022-01-10 21:52:58,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226733 to 201537. [2022-01-10 21:52:59,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201537 states, 201536 states have (on average 1.103281795808193) internal successors, (222351), 201536 states have internal predecessors, (222351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:59,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201537 states to 201537 states and 222351 transitions. [2022-01-10 21:52:59,821 INFO L78 Accepts]: Start accepts. Automaton has 201537 states and 222351 transitions. Word has length 294 [2022-01-10 21:52:59,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:52:59,821 INFO L470 AbstractCegarLoop]: Abstraction has 201537 states and 222351 transitions. [2022-01-10 21:52:59,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:52:59,821 INFO L276 IsEmpty]: Start isEmpty. Operand 201537 states and 222351 transitions. [2022-01-10 21:52:59,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-01-10 21:52:59,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:52:59,863 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:52:59,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 21:53:00,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-10 21:53:00,084 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:53:00,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:53:00,084 INFO L85 PathProgramCache]: Analyzing trace with hash -88533849, now seen corresponding path program 1 times [2022-01-10 21:53:00,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:53:00,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73377745] [2022-01-10 21:53:00,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:53:00,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:53:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:53:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-01-10 21:53:00,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:53:00,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73377745] [2022-01-10 21:53:00,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73377745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:53:00,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:53:00,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:53:00,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899270451] [2022-01-10 21:53:00,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:53:00,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:53:00,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:53:00,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:53:00,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:53:00,297 INFO L87 Difference]: Start difference. First operand 201537 states and 222351 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:53:02,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:53:02,975 INFO L93 Difference]: Finished difference Result 485445 states and 535959 transitions. [2022-01-10 21:53:02,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:53:02,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 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 301 [2022-01-10 21:53:02,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:53:03,736 INFO L225 Difference]: With dead ends: 485445 [2022-01-10 21:53:03,736 INFO L226 Difference]: Without dead ends: 283910 [2022-01-10 21:53:03,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:53:03,959 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 163 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:53:03,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 231 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 21:53:04,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283910 states. [2022-01-10 21:53:07,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283910 to 235243. [2022-01-10 21:53:07,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235243 states, 235242 states have (on average 1.1050960287703726) internal successors, (259965), 235242 states have internal predecessors, (259965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:53:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235243 states to 235243 states and 259965 transitions. [2022-01-10 21:53:07,881 INFO L78 Accepts]: Start accepts. Automaton has 235243 states and 259965 transitions. Word has length 301 [2022-01-10 21:53:07,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:53:07,882 INFO L470 AbstractCegarLoop]: Abstraction has 235243 states and 259965 transitions. [2022-01-10 21:53:07,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:53:07,882 INFO L276 IsEmpty]: Start isEmpty. Operand 235243 states and 259965 transitions. [2022-01-10 21:53:07,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-01-10 21:53:07,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:53:07,930 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:53:07,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 21:53:07,930 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:53:07,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:53:07,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1507357247, now seen corresponding path program 1 times [2022-01-10 21:53:07,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:53:07,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431020955] [2022-01-10 21:53:07,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:53:07,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:53:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:53:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 21:53:08,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:53:08,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431020955] [2022-01-10 21:53:08,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431020955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:53:08,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:53:08,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:53:08,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934623157] [2022-01-10 21:53:08,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:53:08,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:53:08,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:53:08,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:53:08,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:53:08,085 INFO L87 Difference]: Start difference. First operand 235243 states and 259965 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:53:10,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:53:10,629 INFO L93 Difference]: Finished difference Result 654875 states and 724626 transitions. [2022-01-10 21:53:10,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:53:10,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 306 [2022-01-10 21:53:10,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:53:11,833 INFO L225 Difference]: With dead ends: 654875 [2022-01-10 21:53:11,833 INFO L226 Difference]: Without dead ends: 419634 [2022-01-10 21:53:11,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:53:11,950 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 330 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 21:53:11,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 953 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 21:53:12,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419634 states.