/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:28:05,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:28:05,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:28:05,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 00:28:05,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:28:05,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:28:05,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:28:05,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:28:05,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:28:05,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:28:05,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:28:05,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:28:05,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:28:05,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:28:05,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:28:05,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:28:05,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 00:28:05,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:28:05,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:28:05,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:28:05,545 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:28:05,561 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:28:05,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:28:05,562 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:28:05,562 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:28:05,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:28:05,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:28:05,563 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:28:05,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:28:05,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:28:05,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:28:05,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:28:05,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:28:05,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:28:05,564 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:28:05,564 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:28:05,564 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:28:05,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:28:05,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:28:05,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:28:05,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:28:05,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:28:05,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:28:05,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:28:05,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:28:05,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:28:05,565 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:28:05,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:28:05,565 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:28:05,566 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:28:05,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:28:05,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:28:05,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:28:05,567 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:28:05,567 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:28:05,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:28:05,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:28:05,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:28:05,765 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:28:05,765 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:28:05,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.c [2022-01-11 00:28:05,812 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5106781a6/ce881df9e8154f5c928c723de9e88470/FLAG12bc295fb [2022-01-11 00:28:06,189 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:28:06,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.c [2022-01-11 00:28:06,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5106781a6/ce881df9e8154f5c928c723de9e88470/FLAG12bc295fb [2022-01-11 00:28:06,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5106781a6/ce881df9e8154f5c928c723de9e88470 [2022-01-11 00:28:06,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:28:06,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:28:06,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:28:06,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:28:06,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:28:06,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:28:06" (1/1) ... [2022-01-11 00:28:06,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cd1ac83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:28:06, skipping insertion in model container [2022-01-11 00:28:06,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:28:06" (1/1) ... [2022-01-11 00:28:06,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:28:06,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:28:06,476 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.c[20047,20060] [2022-01-11 00:28:06,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:28:06,486 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:28:06,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.c[20047,20060] [2022-01-11 00:28:06,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:28:06,556 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:28:06,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:28:06 WrapperNode [2022-01-11 00:28:06,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:28:06,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:28:06,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:28:06,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:28:06,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:28:06" (1/1) ... [2022-01-11 00:28:06,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:28:06" (1/1) ... [2022-01-11 00:28:06,613 INFO L137 Inliner]: procedures = 27, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 428 [2022-01-11 00:28:06,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:28:06,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:28:06,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:28:06,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:28:06,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:28:06" (1/1) ... [2022-01-11 00:28:06,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:28:06" (1/1) ... [2022-01-11 00:28:06,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:28:06" (1/1) ... [2022-01-11 00:28:06,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:28:06" (1/1) ... [2022-01-11 00:28:06,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:28:06" (1/1) ... [2022-01-11 00:28:06,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:28:06" (1/1) ... [2022-01-11 00:28:06,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:28:06" (1/1) ... [2022-01-11 00:28:06,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:28:06,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:28:06,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:28:06,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:28:06,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:28:06" (1/1) ... [2022-01-11 00:28:06,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:28:06,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:28:06,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 00:28:06,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 00:28:06,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:28:06,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:28:06,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:28:06,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:28:06,791 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:28:06,793 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:28:07,226 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:28:07,231 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:28:07,231 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 00:28:07,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:28:07 BoogieIcfgContainer [2022-01-11 00:28:07,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:28:07,233 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:28:07,233 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:28:07,234 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:28:07,236 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:28:07" (1/1) ... [2022-01-11 00:28:07,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:28:07 BasicIcfg [2022-01-11 00:28:07,578 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:28:07,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:28:07,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:28:07,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:28:07,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:28:06" (1/4) ... [2022-01-11 00:28:07,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:28:07, skipping insertion in model container [2022-01-11 00:28:07,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:28:06" (2/4) ... [2022-01-11 00:28:07,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:28:07, skipping insertion in model container [2022-01-11 00:28:07,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:28:07" (3/4) ... [2022-01-11 00:28:07,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:28:07, skipping insertion in model container [2022-01-11 00:28:07,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:28:07" (4/4) ... [2022-01-11 00:28:07,585 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals.cTransformedIcfg [2022-01-11 00:28:07,588 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:28:07,588 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:28:07,629 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:28:07,633 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 00:28:07,634 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:28:07,652 INFO L276 IsEmpty]: Start isEmpty. Operand has 130 states, 128 states have (on average 1.75) internal successors, (224), 129 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:07,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-11 00:28:07,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:28:07,657 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] [2022-01-11 00:28:07,658 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:28:07,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:28:07,661 INFO L85 PathProgramCache]: Analyzing trace with hash 328228418, now seen corresponding path program 1 times [2022-01-11 00:28:07,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:28:07,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113590500] [2022-01-11 00:28:07,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:28:07,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:28:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:28:07,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:28:07,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:28:07,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113590500] [2022-01-11 00:28:07,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113590500] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:28:07,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:28:07,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:28:07,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882309374] [2022-01-11 00:28:07,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:28:07,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 00:28:07,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:28:07,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 00:28:07,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 00:28:07,919 INFO L87 Difference]: Start difference. First operand has 130 states, 128 states have (on average 1.75) internal successors, (224), 129 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:07,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:28:07,951 INFO L93 Difference]: Finished difference Result 201 states and 339 transitions. [2022-01-11 00:28:07,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 00:28:07,952 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-01-11 00:28:07,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:28:07,965 INFO L225 Difference]: With dead ends: 201 [2022-01-11 00:28:07,966 INFO L226 Difference]: Without dead ends: 126 [2022-01-11 00:28:07,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 00:28:07,973 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:28:07,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:28:07,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-01-11 00:28:08,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-01-11 00:28:08,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.736) internal successors, (217), 125 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 217 transitions. [2022-01-11 00:28:08,011 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 217 transitions. Word has length 41 [2022-01-11 00:28:08,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:28:08,012 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 217 transitions. [2022-01-11 00:28:08,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:08,014 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 217 transitions. [2022-01-11 00:28:08,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-11 00:28:08,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:28:08,016 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] [2022-01-11 00:28:08,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:28:08,016 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:28:08,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:28:08,018 INFO L85 PathProgramCache]: Analyzing trace with hash -2016438623, now seen corresponding path program 1 times [2022-01-11 00:28:08,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:28:08,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746066441] [2022-01-11 00:28:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:28:08,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:28:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:28:08,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:28:08,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:28:08,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746066441] [2022-01-11 00:28:08,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746066441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:28:08,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:28:08,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:28:08,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370748190] [2022-01-11 00:28:08,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:28:08,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:28:08,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:28:08,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:28:08,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:28:08,240 INFO L87 Difference]: Start difference. First operand 126 states and 217 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:08,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:28:08,350 INFO L93 Difference]: Finished difference Result 200 states and 332 transitions. [2022-01-11 00:28:08,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:28:08,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-01-11 00:28:08,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:28:08,353 INFO L225 Difference]: With dead ends: 200 [2022-01-11 00:28:08,353 INFO L226 Difference]: Without dead ends: 126 [2022-01-11 00:28:08,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:28:08,358 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 3 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:28:08,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 807 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:28:08,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-01-11 00:28:08,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-01-11 00:28:08,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.336) internal successors, (167), 125 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:08,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 167 transitions. [2022-01-11 00:28:08,368 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 167 transitions. Word has length 41 [2022-01-11 00:28:08,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:28:08,368 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 167 transitions. [2022-01-11 00:28:08,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:08,368 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 167 transitions. [2022-01-11 00:28:08,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-11 00:28:08,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:28:08,370 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] [2022-01-11 00:28:08,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:28:08,370 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:28:08,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:28:08,371 INFO L85 PathProgramCache]: Analyzing trace with hash 135293068, now seen corresponding path program 1 times [2022-01-11 00:28:08,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:28:08,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289293344] [2022-01-11 00:28:08,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:28:08,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:28:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:28:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:28:08,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:28:08,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289293344] [2022-01-11 00:28:08,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289293344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:28:08,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:28:08,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:28:08,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610118306] [2022-01-11 00:28:08,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:28:08,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:28:08,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:28:08,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:28:08,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:28:08,612 INFO L87 Difference]: Start difference. First operand 126 states and 167 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:08,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:28:08,625 INFO L93 Difference]: Finished difference Result 260 states and 379 transitions. [2022-01-11 00:28:08,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:28:08,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-01-11 00:28:08,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:28:08,628 INFO L225 Difference]: With dead ends: 260 [2022-01-11 00:28:08,628 INFO L226 Difference]: Without dead ends: 190 [2022-01-11 00:28:08,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:28:08,633 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 97 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:28:08,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 361 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:28:08,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-01-11 00:28:08,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2022-01-11 00:28:08,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.4224598930481283) internal successors, (266), 187 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:08,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 266 transitions. [2022-01-11 00:28:08,650 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 266 transitions. Word has length 90 [2022-01-11 00:28:08,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:28:08,650 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 266 transitions. [2022-01-11 00:28:08,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:08,650 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 266 transitions. [2022-01-11 00:28:08,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-11 00:28:08,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:28:08,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:28:08,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:28:08,652 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:28:08,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:28:08,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1535272237, now seen corresponding path program 1 times [2022-01-11 00:28:08,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:28:08,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218796092] [2022-01-11 00:28:08,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:28:08,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:28:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:28:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:28:08,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:28:08,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218796092] [2022-01-11 00:28:08,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218796092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:28:08,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:28:08,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:28:08,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455960874] [2022-01-11 00:28:08,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:28:08,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:28:08,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:28:08,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:28:08,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:28:08,866 INFO L87 Difference]: Start difference. First operand 188 states and 266 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:08,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:28:08,880 INFO L93 Difference]: Finished difference Result 440 states and 666 transitions. [2022-01-11 00:28:08,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:28:08,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-01-11 00:28:08,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:28:08,882 INFO L225 Difference]: With dead ends: 440 [2022-01-11 00:28:08,882 INFO L226 Difference]: Without dead ends: 308 [2022-01-11 00:28:08,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:28:08,887 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 93 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:28:08,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 360 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:28:08,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-01-11 00:28:08,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 306. [2022-01-11 00:28:08,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 1.4852459016393442) internal successors, (453), 305 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:08,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 453 transitions. [2022-01-11 00:28:08,900 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 453 transitions. Word has length 90 [2022-01-11 00:28:08,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:28:08,900 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 453 transitions. [2022-01-11 00:28:08,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:08,900 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 453 transitions. [2022-01-11 00:28:08,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-11 00:28:08,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:28:08,902 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] [2022-01-11 00:28:08,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:28:08,902 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:28:08,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:28:08,903 INFO L85 PathProgramCache]: Analyzing trace with hash 568813869, now seen corresponding path program 1 times [2022-01-11 00:28:08,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:28:08,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8739657] [2022-01-11 00:28:08,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:28:08,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:28:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:28:09,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:28:09,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:28:09,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8739657] [2022-01-11 00:28:09,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8739657] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:28:09,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:28:09,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:28:09,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074905567] [2022-01-11 00:28:09,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:28:09,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:28:09,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:28:09,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:28:09,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:28:09,042 INFO L87 Difference]: Start difference. First operand 306 states and 453 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:09,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:28:09,076 INFO L93 Difference]: Finished difference Result 782 states and 1207 transitions. [2022-01-11 00:28:09,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:28:09,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-01-11 00:28:09,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:28:09,079 INFO L225 Difference]: With dead ends: 782 [2022-01-11 00:28:09,080 INFO L226 Difference]: Without dead ends: 532 [2022-01-11 00:28:09,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:28:09,081 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 89 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:28:09,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 359 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:28:09,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-01-11 00:28:09,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 530. [2022-01-11 00:28:09,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 1.5217391304347827) internal successors, (805), 529 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:09,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 805 transitions. [2022-01-11 00:28:09,094 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 805 transitions. Word has length 90 [2022-01-11 00:28:09,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:28:09,095 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 805 transitions. [2022-01-11 00:28:09,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:09,098 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 805 transitions. [2022-01-11 00:28:09,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-11 00:28:09,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:28:09,106 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] [2022-01-11 00:28:09,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:28:09,106 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:28:09,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:28:09,107 INFO L85 PathProgramCache]: Analyzing trace with hash -473131314, now seen corresponding path program 1 times [2022-01-11 00:28:09,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:28:09,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32908084] [2022-01-11 00:28:09,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:28:09,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:28:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:28:09,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:28:09,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:28:09,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32908084] [2022-01-11 00:28:09,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32908084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:28:09,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:28:09,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:28:09,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344198634] [2022-01-11 00:28:09,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:28:09,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:28:09,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:28:09,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:28:09,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:28:09,235 INFO L87 Difference]: Start difference. First operand 530 states and 805 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:09,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:28:09,254 INFO L93 Difference]: Finished difference Result 1430 states and 2223 transitions. [2022-01-11 00:28:09,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:28:09,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-01-11 00:28:09,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:28:09,258 INFO L225 Difference]: With dead ends: 1430 [2022-01-11 00:28:09,259 INFO L226 Difference]: Without dead ends: 956 [2022-01-11 00:28:09,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:28:09,262 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 85 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:28:09,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 358 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:28:09,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2022-01-11 00:28:09,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 954. [2022-01-11 00:28:09,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 953 states have (on average 1.5372507869884575) internal successors, (1465), 953 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:09,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1465 transitions. [2022-01-11 00:28:09,281 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1465 transitions. Word has length 90 [2022-01-11 00:28:09,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:28:09,282 INFO L470 AbstractCegarLoop]: Abstraction has 954 states and 1465 transitions. [2022-01-11 00:28:09,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:09,282 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1465 transitions. [2022-01-11 00:28:09,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-11 00:28:09,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:28:09,284 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] [2022-01-11 00:28:09,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:28:09,285 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:28:09,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:28:09,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1877196015, now seen corresponding path program 1 times [2022-01-11 00:28:09,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:28:09,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529581269] [2022-01-11 00:28:09,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:28:09,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:28:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:28:09,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:28:09,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:28:09,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529581269] [2022-01-11 00:28:09,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529581269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:28:09,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:28:09,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:28:09,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884170937] [2022-01-11 00:28:09,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:28:09,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:28:09,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:28:09,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:28:09,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:28:09,421 INFO L87 Difference]: Start difference. First operand 954 states and 1465 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:09,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:28:09,444 INFO L93 Difference]: Finished difference Result 2654 states and 4123 transitions. [2022-01-11 00:28:09,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:28:09,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-01-11 00:28:09,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:28:09,449 INFO L225 Difference]: With dead ends: 2654 [2022-01-11 00:28:09,449 INFO L226 Difference]: Without dead ends: 1756 [2022-01-11 00:28:09,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:28:09,451 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 81 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:28:09,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 357 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:28:09,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2022-01-11 00:28:09,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1754. [2022-01-11 00:28:09,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1753 states have (on average 1.5385054192812322) internal successors, (2697), 1753 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:09,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2697 transitions. [2022-01-11 00:28:09,507 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2697 transitions. Word has length 90 [2022-01-11 00:28:09,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:28:09,507 INFO L470 AbstractCegarLoop]: Abstraction has 1754 states and 2697 transitions. [2022-01-11 00:28:09,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:09,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2697 transitions. [2022-01-11 00:28:09,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-11 00:28:09,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:28:09,508 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] [2022-01-11 00:28:09,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:28:09,508 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:28:09,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:28:09,509 INFO L85 PathProgramCache]: Analyzing trace with hash -84075632, now seen corresponding path program 1 times [2022-01-11 00:28:09,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:28:09,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877144541] [2022-01-11 00:28:09,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:28:09,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:28:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:28:09,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:28:09,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:28:09,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877144541] [2022-01-11 00:28:09,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877144541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:28:09,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:28:09,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:28:09,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772115016] [2022-01-11 00:28:09,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:28:09,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:28:09,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:28:09,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:28:09,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:28:09,629 INFO L87 Difference]: Start difference. First operand 1754 states and 2697 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:09,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:28:09,667 INFO L93 Difference]: Finished difference Result 4958 states and 7659 transitions. [2022-01-11 00:28:09,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:28:09,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-01-11 00:28:09,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:28:09,677 INFO L225 Difference]: With dead ends: 4958 [2022-01-11 00:28:09,677 INFO L226 Difference]: Without dead ends: 3260 [2022-01-11 00:28:09,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:28:09,680 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 77 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:28:09,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 356 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:28:09,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2022-01-11 00:28:09,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 3258. [2022-01-11 00:28:09,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3258 states, 3257 states have (on average 1.5305495855081364) internal successors, (4985), 3257 states have internal predecessors, (4985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:09,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3258 states to 3258 states and 4985 transitions. [2022-01-11 00:28:09,744 INFO L78 Accepts]: Start accepts. Automaton has 3258 states and 4985 transitions. Word has length 90 [2022-01-11 00:28:09,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:28:09,746 INFO L470 AbstractCegarLoop]: Abstraction has 3258 states and 4985 transitions. [2022-01-11 00:28:09,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:09,746 INFO L276 IsEmpty]: Start isEmpty. Operand 3258 states and 4985 transitions. [2022-01-11 00:28:09,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-11 00:28:09,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:28:09,747 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] [2022-01-11 00:28:09,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:28:09,747 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:28:09,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:28:09,747 INFO L85 PathProgramCache]: Analyzing trace with hash 738783921, now seen corresponding path program 1 times [2022-01-11 00:28:09,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:28:09,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988251719] [2022-01-11 00:28:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:28:09,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:28:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:28:10,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:28:10,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:28:10,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988251719] [2022-01-11 00:28:10,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988251719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:28:10,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:28:10,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:28:10,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472814087] [2022-01-11 00:28:10,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:28:10,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:28:10,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:28:10,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:28:10,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:28:10,295 INFO L87 Difference]: Start difference. First operand 3258 states and 4985 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:11,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:28:11,054 INFO L93 Difference]: Finished difference Result 9662 states and 14843 transitions. [2022-01-11 00:28:11,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:28:11,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-01-11 00:28:11,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:28:11,074 INFO L225 Difference]: With dead ends: 9662 [2022-01-11 00:28:11,074 INFO L226 Difference]: Without dead ends: 6460 [2022-01-11 00:28:11,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-11 00:28:11,081 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 831 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 00:28:11,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 313 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 00:28:11,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6460 states. [2022-01-11 00:28:11,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6460 to 6458. [2022-01-11 00:28:11,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6458 states, 6457 states have (on average 1.5302772185225337) internal successors, (9881), 6457 states have internal predecessors, (9881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:11,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6458 states to 6458 states and 9881 transitions. [2022-01-11 00:28:11,499 INFO L78 Accepts]: Start accepts. Automaton has 6458 states and 9881 transitions. Word has length 90 [2022-01-11 00:28:11,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:28:11,500 INFO L470 AbstractCegarLoop]: Abstraction has 6458 states and 9881 transitions. [2022-01-11 00:28:11,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:11,500 INFO L276 IsEmpty]: Start isEmpty. Operand 6458 states and 9881 transitions. [2022-01-11 00:28:11,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-11 00:28:11,500 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:28:11,501 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] [2022-01-11 00:28:11,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:28:11,501 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:28:11,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:28:11,501 INFO L85 PathProgramCache]: Analyzing trace with hash 805790674, now seen corresponding path program 1 times [2022-01-11 00:28:11,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:28:11,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588708686] [2022-01-11 00:28:11,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:28:11,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:28:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:28:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:28:12,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:28:12,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588708686] [2022-01-11 00:28:12,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588708686] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:28:12,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:28:12,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-11 00:28:12,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969906793] [2022-01-11 00:28:12,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:28:12,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 00:28:12,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:28:12,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 00:28:12,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:28:12,018 INFO L87 Difference]: Start difference. First operand 6458 states and 9881 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:30,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:28:30,360 INFO L93 Difference]: Finished difference Result 96086 states and 147431 transitions. [2022-01-11 00:28:30,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-11 00:28:30,361 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-01-11 00:28:30,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:28:30,572 INFO L225 Difference]: With dead ends: 96086 [2022-01-11 00:28:30,573 INFO L226 Difference]: Without dead ends: 89684 [2022-01-11 00:28:30,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-01-11 00:28:30,599 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 1681 mSDsluCounter, 4824 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 4993 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-11 00:28:30,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1681 Valid, 4993 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-11 00:28:30,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89684 states. [2022-01-11 00:28:35,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89684 to 12858. [2022-01-11 00:28:35,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12858 states, 12857 states have (on average 1.512716807964533) internal successors, (19449), 12857 states have internal predecessors, (19449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:35,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12858 states to 12858 states and 19449 transitions. [2022-01-11 00:28:35,276 INFO L78 Accepts]: Start accepts. Automaton has 12858 states and 19449 transitions. Word has length 90 [2022-01-11 00:28:35,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:28:35,276 INFO L470 AbstractCegarLoop]: Abstraction has 12858 states and 19449 transitions. [2022-01-11 00:28:35,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:35,276 INFO L276 IsEmpty]: Start isEmpty. Operand 12858 states and 19449 transitions. [2022-01-11 00:28:35,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-11 00:28:35,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:28:35,277 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] [2022-01-11 00:28:35,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:28:35,277 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:28:35,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:28:35,278 INFO L85 PathProgramCache]: Analyzing trace with hash 321927958, now seen corresponding path program 1 times [2022-01-11 00:28:35,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:28:35,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314509102] [2022-01-11 00:28:35,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:28:35,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:28:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:28:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:28:35,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:28:35,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314509102] [2022-01-11 00:28:35,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314509102] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:28:35,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:28:35,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:28:35,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713381358] [2022-01-11 00:28:35,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:28:35,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:28:35,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:28:35,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:28:35,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:28:35,392 INFO L87 Difference]: Start difference. First operand 12858 states and 19449 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:37,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:28:45,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:28:45,269 INFO L93 Difference]: Finished difference Result 36798 states and 55291 transitions. [2022-01-11 00:28:45,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:28:45,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-01-11 00:28:45,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:28:45,313 INFO L225 Difference]: With dead ends: 36798 [2022-01-11 00:28:45,313 INFO L226 Difference]: Without dead ends: 23996 [2022-01-11 00:28:45,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:28:45,325 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 97 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:28:45,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 414 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 00:28:45,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23996 states. [2022-01-11 00:28:53,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23996 to 23482. [2022-01-11 00:28:53,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23482 states, 23481 states have (on average 1.474255781269963) internal successors, (34617), 23481 states have internal predecessors, (34617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:53,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23482 states to 23482 states and 34617 transitions. [2022-01-11 00:28:53,178 INFO L78 Accepts]: Start accepts. Automaton has 23482 states and 34617 transitions. Word has length 92 [2022-01-11 00:28:53,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:28:53,178 INFO L470 AbstractCegarLoop]: Abstraction has 23482 states and 34617 transitions. [2022-01-11 00:28:53,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:28:53,179 INFO L276 IsEmpty]: Start isEmpty. Operand 23482 states and 34617 transitions. [2022-01-11 00:28:53,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-11 00:28:53,179 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:28:53,179 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] [2022-01-11 00:28:53,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:28:53,180 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:28:53,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:28:53,180 INFO L85 PathProgramCache]: Analyzing trace with hash 353327672, now seen corresponding path program 1 times [2022-01-11 00:28:53,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:28:53,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506330394] [2022-01-11 00:28:53,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:28:53,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:28:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:28:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:28:53,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:28:53,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506330394] [2022-01-11 00:28:53,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506330394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:28:53,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:28:53,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-11 00:28:53,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113607860] [2022-01-11 00:28:53,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:28:53,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 00:28:53,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:28:53,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 00:28:53,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:28:53,795 INFO L87 Difference]: Start difference. First operand 23482 states and 34617 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)