/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_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:39:22,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:39:22,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:39:22,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:39:22,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:39:22,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:39:22,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:39:22,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:39:22,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:39:22,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:39:22,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:39:22,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:39:22,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:39:22,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:39:22,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:39:22,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:39:22,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:39:22,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:39:22,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:39:22,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:39:22,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:39:22,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:39:22,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:39:22,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:39:22,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 06:39:23,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:39:23,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:39:23,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:39:23,009 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:39:23,044 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:39:23,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:39:23,045 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:39:23,045 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:39:23,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:39:23,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:39:23,046 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:39:23,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:39:23,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:39:23,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:39:23,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:39:23,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:39:23,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:39:23,047 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:39:23,047 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:39:23,047 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:39:23,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:39:23,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:39:23,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:39:23,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:39:23,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:39:23,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:39:23,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:39:23,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:39:23,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:39:23,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:39:23,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:39:23,049 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:39:23,049 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:39:23,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:39:23,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:39:23,049 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:39:23,050 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:39:23,050 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:39:23,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:39:23,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:39:23,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:39:23,278 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:39:23,280 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:39:23,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2022-01-11 06:39:23,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4524a7ea8/38d437f933b1426eab38a798eaa0cbf0/FLAG573bab915 [2022-01-11 06:39:23,766 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:39:23,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2022-01-11 06:39:23,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4524a7ea8/38d437f933b1426eab38a798eaa0cbf0/FLAG573bab915 [2022-01-11 06:39:23,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4524a7ea8/38d437f933b1426eab38a798eaa0cbf0 [2022-01-11 06:39:23,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:39:23,800 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:39:23,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:39:23,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:39:23,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:39:23,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:39:23" (1/1) ... [2022-01-11 06:39:23,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12b9a941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:23, skipping insertion in model container [2022-01-11 06:39:23,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:39:23" (1/1) ... [2022-01-11 06:39:23,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:39:23,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:39:24,119 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c[13904,13917] [2022-01-11 06:39:24,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:39:24,211 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:39:24,286 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-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c[13904,13917] [2022-01-11 06:39:24,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:39:24,344 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:39:24,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:24 WrapperNode [2022-01-11 06:39:24,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:39:24,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:39:24,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:39:24,346 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:39:24,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:24" (1/1) ... [2022-01-11 06:39:24,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:24" (1/1) ... [2022-01-11 06:39:24,415 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1174 [2022-01-11 06:39:24,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:39:24,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:39:24,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:39:24,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:39:24,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:24" (1/1) ... [2022-01-11 06:39:24,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:24" (1/1) ... [2022-01-11 06:39:24,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:24" (1/1) ... [2022-01-11 06:39:24,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:24" (1/1) ... [2022-01-11 06:39:24,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:24" (1/1) ... [2022-01-11 06:39:24,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:24" (1/1) ... [2022-01-11 06:39:24,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:24" (1/1) ... [2022-01-11 06:39:24,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:39:24,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:39:24,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:39:24,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:39:24,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:24" (1/1) ... [2022-01-11 06:39:24,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:39:24,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:39:24,528 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 06:39:24,550 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 06:39:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:39:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:39:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:39:24,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:39:24,672 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:39:24,673 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:39:25,539 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:39:25,548 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:39:25,548 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:39:25,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:39:25 BoogieIcfgContainer [2022-01-11 06:39:25,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:39:25,554 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:39:25,558 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:39:25,559 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:39:25,561 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:39:25" (1/1) ... [2022-01-11 06:39:26,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:39:26 BasicIcfg [2022-01-11 06:39:26,510 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:39:26,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:39:26,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:39:26,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:39:26,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:39:23" (1/4) ... [2022-01-11 06:39:26,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32410c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:39:26, skipping insertion in model container [2022-01-11 06:39:26,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:39:24" (2/4) ... [2022-01-11 06:39:26,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32410c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:39:26, skipping insertion in model container [2022-01-11 06:39:26,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:39:25" (3/4) ... [2022-01-11 06:39:26,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32410c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:39:26, skipping insertion in model container [2022-01-11 06:39:26,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:39:26" (4/4) ... [2022-01-11 06:39:26,518 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.cTransformedIcfg [2022-01-11 06:39:26,523 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:39:26,523 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:39:26,569 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:39:26,579 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 06:39:26,579 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:39:26,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 336 states, 334 states have (on average 1.652694610778443) internal successors, (552), 335 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 06:39:26,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 06:39:26,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:26,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:26,621 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:26,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:26,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1436922518, now seen corresponding path program 1 times [2022-01-11 06:39:26,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:26,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458252814] [2022-01-11 06:39:26,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:26,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:27,155 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 06:39:27,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:27,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458252814] [2022-01-11 06:39:27,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458252814] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:27,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:27,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:27,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347579171] [2022-01-11 06:39:27,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:27,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:27,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:27,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:27,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:27,198 INFO L87 Difference]: Start difference. First operand has 336 states, 334 states have (on average 1.652694610778443) internal successors, (552), 335 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:27,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:27,373 INFO L93 Difference]: Finished difference Result 845 states and 1372 transitions. [2022-01-11 06:39:27,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:27,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-11 06:39:27,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:27,400 INFO L225 Difference]: With dead ends: 845 [2022-01-11 06:39:27,400 INFO L226 Difference]: Without dead ends: 604 [2022-01-11 06:39:27,405 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 06:39:27,413 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 414 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:27,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 1076 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:39:27,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-01-11 06:39:27,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 578. [2022-01-11 06:39:27,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 577 states have (on average 1.6204506065857887) internal successors, (935), 577 states have internal predecessors, (935), 0 states have call successors, (0), 0 states 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 06:39:27,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 935 transitions. [2022-01-11 06:39:27,491 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 935 transitions. Word has length 127 [2022-01-11 06:39:27,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:27,493 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 935 transitions. [2022-01-11 06:39:27,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:39:27,493 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 935 transitions. [2022-01-11 06:39:27,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-11 06:39:27,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:27,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:27,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:39:27,500 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:27,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:27,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1139212929, now seen corresponding path program 1 times [2022-01-11 06:39:27,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:27,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948841609] [2022-01-11 06:39:27,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:27,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:27,727 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 06:39:27,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:27,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948841609] [2022-01-11 06:39:27,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948841609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:27,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:27,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:27,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787838381] [2022-01-11 06:39:27,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:27,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:27,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:27,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:27,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:27,731 INFO L87 Difference]: Start difference. First operand 578 states and 935 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 06:39:27,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:27,814 INFO L93 Difference]: Finished difference Result 1563 states and 2509 transitions. [2022-01-11 06:39:27,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:27,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2022-01-11 06:39:27,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:27,820 INFO L225 Difference]: With dead ends: 1563 [2022-01-11 06:39:27,821 INFO L226 Difference]: Without dead ends: 1043 [2022-01-11 06:39:27,822 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 06:39:27,856 INFO L933 BasicCegarLoop]: 724 mSDtfsCounter, 454 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:27,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 1175 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:27,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-01-11 06:39:27,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1041. [2022-01-11 06:39:27,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 1040 states have (on average 1.6009615384615385) internal successors, (1665), 1040 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states 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 06:39:27,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1665 transitions. [2022-01-11 06:39:27,914 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1665 transitions. Word has length 129 [2022-01-11 06:39:27,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:27,915 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 1665 transitions. [2022-01-11 06:39:27,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 06:39:27,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1665 transitions. [2022-01-11 06:39:27,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-11 06:39:27,922 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:27,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:27,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:39:27,925 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:27,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:27,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1111847655, now seen corresponding path program 1 times [2022-01-11 06:39:27,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:27,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794308746] [2022-01-11 06:39:27,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:27,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:28,124 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 06:39:28,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:28,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794308746] [2022-01-11 06:39:28,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794308746] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:28,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:28,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:28,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155650615] [2022-01-11 06:39:28,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:28,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:28,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:28,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:28,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:28,128 INFO L87 Difference]: Start difference. First operand 1041 states and 1665 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 06:39:28,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:28,210 INFO L93 Difference]: Finished difference Result 2714 states and 4322 transitions. [2022-01-11 06:39:28,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:28,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-11 06:39:28,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:28,220 INFO L225 Difference]: With dead ends: 2714 [2022-01-11 06:39:28,220 INFO L226 Difference]: Without dead ends: 1860 [2022-01-11 06:39:28,225 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 06:39:28,227 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 437 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:28,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 1191 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:28,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2022-01-11 06:39:28,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1858. [2022-01-11 06:39:28,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1857 states have (on average 1.583737210554658) internal successors, (2941), 1857 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states 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 06:39:28,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2941 transitions. [2022-01-11 06:39:28,277 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2941 transitions. Word has length 131 [2022-01-11 06:39:28,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:28,278 INFO L470 AbstractCegarLoop]: Abstraction has 1858 states and 2941 transitions. [2022-01-11 06:39:28,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 06:39:28,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2941 transitions. [2022-01-11 06:39:28,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-11 06:39:28,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:28,282 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:28,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:39:28,282 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:28,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:28,284 INFO L85 PathProgramCache]: Analyzing trace with hash -400840577, now seen corresponding path program 1 times [2022-01-11 06:39:28,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:28,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770063600] [2022-01-11 06:39:28,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:28,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:28,472 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 06:39:28,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:28,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770063600] [2022-01-11 06:39:28,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770063600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:28,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:28,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:28,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009629874] [2022-01-11 06:39:28,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:28,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:28,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:28,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:28,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:28,477 INFO L87 Difference]: Start difference. First operand 1858 states and 2941 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 06:39:28,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:28,585 INFO L93 Difference]: Finished difference Result 4723 states and 7456 transitions. [2022-01-11 06:39:28,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:28,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2022-01-11 06:39:28,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:28,600 INFO L225 Difference]: With dead ends: 4723 [2022-01-11 06:39:28,600 INFO L226 Difference]: Without dead ends: 3269 [2022-01-11 06:39:28,603 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 06:39:28,611 INFO L933 BasicCegarLoop]: 740 mSDtfsCounter, 420 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:28,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 1207 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:28,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2022-01-11 06:39:28,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3267. [2022-01-11 06:39:28,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3267 states, 3266 states have (on average 1.5667483159828537) internal successors, (5117), 3266 states have internal predecessors, (5117), 0 states have call successors, (0), 0 states 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 06:39:28,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3267 states to 3267 states and 5117 transitions. [2022-01-11 06:39:28,720 INFO L78 Accepts]: Start accepts. Automaton has 3267 states and 5117 transitions. Word has length 133 [2022-01-11 06:39:28,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:28,721 INFO L470 AbstractCegarLoop]: Abstraction has 3267 states and 5117 transitions. [2022-01-11 06:39:28,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 06:39:28,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3267 states and 5117 transitions. [2022-01-11 06:39:28,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-11 06:39:28,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:28,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:28,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:39:28,729 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:28,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:28,730 INFO L85 PathProgramCache]: Analyzing trace with hash 203672733, now seen corresponding path program 1 times [2022-01-11 06:39:28,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:28,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371801132] [2022-01-11 06:39:28,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:28,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:28,887 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 06:39:28,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:28,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371801132] [2022-01-11 06:39:28,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371801132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:28,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:28,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:28,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129143245] [2022-01-11 06:39:28,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:28,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:28,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:28,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:28,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:28,889 INFO L87 Difference]: Start difference. First operand 3267 states and 5117 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 06:39:29,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:29,042 INFO L93 Difference]: Finished difference Result 8140 states and 12716 transitions. [2022-01-11 06:39:29,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:29,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2022-01-11 06:39:29,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:29,061 INFO L225 Difference]: With dead ends: 8140 [2022-01-11 06:39:29,062 INFO L226 Difference]: Without dead ends: 5642 [2022-01-11 06:39:29,067 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 06:39:29,068 INFO L933 BasicCegarLoop]: 748 mSDtfsCounter, 403 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:29,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 1223 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:29,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2022-01-11 06:39:29,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 5640. [2022-01-11 06:39:29,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5640 states, 5639 states have (on average 1.5472601525093101) internal successors, (8725), 5639 states have internal predecessors, (8725), 0 states have call successors, (0), 0 states 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 06:39:29,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5640 states to 5640 states and 8725 transitions. [2022-01-11 06:39:29,270 INFO L78 Accepts]: Start accepts. Automaton has 5640 states and 8725 transitions. Word has length 135 [2022-01-11 06:39:29,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:29,270 INFO L470 AbstractCegarLoop]: Abstraction has 5640 states and 8725 transitions. [2022-01-11 06:39:29,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 06:39:29,271 INFO L276 IsEmpty]: Start isEmpty. Operand 5640 states and 8725 transitions. [2022-01-11 06:39:29,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-11 06:39:29,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:29,282 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:29,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:39:29,282 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:29,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:29,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1882233729, now seen corresponding path program 1 times [2022-01-11 06:39:29,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:29,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709794423] [2022-01-11 06:39:29,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:29,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:29,581 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 06:39:29,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:29,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709794423] [2022-01-11 06:39:29,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709794423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:29,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:29,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:39:29,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650810470] [2022-01-11 06:39:29,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:29,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:39:29,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:29,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:39:29,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:39:29,584 INFO L87 Difference]: Start difference. First operand 5640 states and 8725 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 06:39:29,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:29,845 INFO L93 Difference]: Finished difference Result 9967 states and 15431 transitions. [2022-01-11 06:39:29,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:39:29,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2022-01-11 06:39:29,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:29,860 INFO L225 Difference]: With dead ends: 9967 [2022-01-11 06:39:29,860 INFO L226 Difference]: Without dead ends: 4360 [2022-01-11 06:39:29,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:39:29,867 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 447 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:29,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [447 Valid, 1052 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:29,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4360 states. [2022-01-11 06:39:30,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4360 to 4360. [2022-01-11 06:39:30,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4360 states, 4359 states have (on average 1.5459967882541867) internal successors, (6739), 4359 states have internal predecessors, (6739), 0 states have call successors, (0), 0 states 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 06:39:30,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4360 states to 4360 states and 6739 transitions. [2022-01-11 06:39:30,070 INFO L78 Accepts]: Start accepts. Automaton has 4360 states and 6739 transitions. Word has length 137 [2022-01-11 06:39:30,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:30,070 INFO L470 AbstractCegarLoop]: Abstraction has 4360 states and 6739 transitions. [2022-01-11 06:39:30,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 06:39:30,070 INFO L276 IsEmpty]: Start isEmpty. Operand 4360 states and 6739 transitions. [2022-01-11 06:39:30,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-11 06:39:30,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:30,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:30,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:39:30,080 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:30,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:30,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1352633521, now seen corresponding path program 1 times [2022-01-11 06:39:30,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:30,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306288540] [2022-01-11 06:39:30,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:30,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:30,260 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 06:39:30,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:30,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306288540] [2022-01-11 06:39:30,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306288540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:30,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:30,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:30,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380521494] [2022-01-11 06:39:30,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:30,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:30,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:30,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:30,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:30,262 INFO L87 Difference]: Start difference. First operand 4360 states and 6739 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 06:39:32,405 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 06:39:34,656 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:39:34,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:34,893 INFO L93 Difference]: Finished difference Result 8652 states and 13395 transitions. [2022-01-11 06:39:34,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:34,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2022-01-11 06:39:34,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:34,912 INFO L225 Difference]: With dead ends: 8652 [2022-01-11 06:39:34,912 INFO L226 Difference]: Without dead ends: 4361 [2022-01-11 06:39:34,919 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 06:39:34,919 INFO L933 BasicCegarLoop]: 475 mSDtfsCounter, 23 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:34,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 878 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2022-01-11 06:39:34,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4361 states. [2022-01-11 06:39:35,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4361 to 4360. [2022-01-11 06:39:35,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4360 states, 4359 states have (on average 1.5450791465932554) internal successors, (6735), 4359 states have internal predecessors, (6735), 0 states have call successors, (0), 0 states 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 06:39:35,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4360 states to 4360 states and 6735 transitions. [2022-01-11 06:39:35,083 INFO L78 Accepts]: Start accepts. Automaton has 4360 states and 6735 transitions. Word has length 171 [2022-01-11 06:39:35,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:35,084 INFO L470 AbstractCegarLoop]: Abstraction has 4360 states and 6735 transitions. [2022-01-11 06:39:35,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 06:39:35,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4360 states and 6735 transitions. [2022-01-11 06:39:35,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-11 06:39:35,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:35,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:35,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:39:35,094 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:35,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:35,094 INFO L85 PathProgramCache]: Analyzing trace with hash -276080112, now seen corresponding path program 1 times [2022-01-11 06:39:35,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:35,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538301535] [2022-01-11 06:39:35,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:35,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:35,604 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 06:39:35,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:35,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538301535] [2022-01-11 06:39:35,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538301535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:35,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:35,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:39:35,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71135976] [2022-01-11 06:39:35,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:35,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:39:35,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:35,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:39:35,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:39:35,606 INFO L87 Difference]: Start difference. First operand 4360 states and 6735 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 06:39:35,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:35,781 INFO L93 Difference]: Finished difference Result 8615 states and 13336 transitions. [2022-01-11 06:39:35,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:39:35,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2022-01-11 06:39:35,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:35,812 INFO L225 Difference]: With dead ends: 8615 [2022-01-11 06:39:35,813 INFO L226 Difference]: Without dead ends: 4360 [2022-01-11 06:39:35,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:39:35,820 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 1 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:35,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1428 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:35,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4360 states. [2022-01-11 06:39:35,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4360 to 4360. [2022-01-11 06:39:35,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4360 states, 4359 states have (on average 1.5439320945170911) internal successors, (6730), 4359 states have internal predecessors, (6730), 0 states have call successors, (0), 0 states 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 06:39:35,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4360 states to 4360 states and 6730 transitions. [2022-01-11 06:39:35,999 INFO L78 Accepts]: Start accepts. Automaton has 4360 states and 6730 transitions. Word has length 171 [2022-01-11 06:39:35,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:35,999 INFO L470 AbstractCegarLoop]: Abstraction has 4360 states and 6730 transitions. [2022-01-11 06:39:36,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 06:39:36,000 INFO L276 IsEmpty]: Start isEmpty. Operand 4360 states and 6730 transitions. [2022-01-11 06:39:36,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-11 06:39:36,009 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:36,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:36,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:39:36,010 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:36,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:36,010 INFO L85 PathProgramCache]: Analyzing trace with hash -949100443, now seen corresponding path program 1 times [2022-01-11 06:39:36,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:36,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826254044] [2022-01-11 06:39:36,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:36,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:36,163 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 06:39:36,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:36,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826254044] [2022-01-11 06:39:36,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826254044] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:36,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:36,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:36,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293625742] [2022-01-11 06:39:36,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:36,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:36,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:36,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:36,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:36,166 INFO L87 Difference]: Start difference. First operand 4360 states and 6730 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 06:39:36,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:36,289 INFO L93 Difference]: Finished difference Result 7111 states and 10996 transitions. [2022-01-11 06:39:36,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:36,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2022-01-11 06:39:36,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:36,295 INFO L225 Difference]: With dead ends: 7111 [2022-01-11 06:39:36,296 INFO L226 Difference]: Without dead ends: 2824 [2022-01-11 06:39:36,300 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 06:39:36,303 INFO L933 BasicCegarLoop]: 514 mSDtfsCounter, 252 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:36,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 740 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:36,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2022-01-11 06:39:36,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 2822. [2022-01-11 06:39:36,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2822 states, 2821 states have (on average 1.5299539170506913) internal successors, (4316), 2821 states have internal predecessors, (4316), 0 states have call successors, (0), 0 states 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 06:39:36,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 4316 transitions. [2022-01-11 06:39:36,398 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 4316 transitions. Word has length 174 [2022-01-11 06:39:36,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:36,398 INFO L470 AbstractCegarLoop]: Abstraction has 2822 states and 4316 transitions. [2022-01-11 06:39:36,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 06:39:36,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 4316 transitions. [2022-01-11 06:39:36,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-11 06:39:36,407 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:36,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:36,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:39:36,407 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:36,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:36,408 INFO L85 PathProgramCache]: Analyzing trace with hash 2097604576, now seen corresponding path program 1 times [2022-01-11 06:39:36,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:36,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426936246] [2022-01-11 06:39:36,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:36,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:36,656 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 06:39:36,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:36,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426936246] [2022-01-11 06:39:36,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426936246] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:36,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:36,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:36,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061235730] [2022-01-11 06:39:36,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:36,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:36,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:36,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:36,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:36,659 INFO L87 Difference]: Start difference. First operand 2822 states and 4316 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 06:39:42,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:42,347 INFO L93 Difference]: Finished difference Result 7745 states and 11711 transitions. [2022-01-11 06:39:42,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:42,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2022-01-11 06:39:42,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:42,361 INFO L225 Difference]: With dead ends: 7745 [2022-01-11 06:39:42,362 INFO L226 Difference]: Without dead ends: 5247 [2022-01-11 06:39:42,365 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 06:39:42,365 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 309 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:42,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 1020 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-01-11 06:39:42,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5247 states. [2022-01-11 06:39:43,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5247 to 5245. [2022-01-11 06:39:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5245 states, 5244 states have (on average 1.4914187643020596) internal successors, (7821), 5244 states have internal predecessors, (7821), 0 states have call successors, (0), 0 states 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 06:39:43,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 7821 transitions. [2022-01-11 06:39:43,191 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 7821 transitions. Word has length 174 [2022-01-11 06:39:43,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:43,192 INFO L470 AbstractCegarLoop]: Abstraction has 5245 states and 7821 transitions. [2022-01-11 06:39:43,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 06:39:43,192 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 7821 transitions. [2022-01-11 06:39:43,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 06:39:43,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:43,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:43,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:39:43,201 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:43,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:43,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2110384254, now seen corresponding path program 1 times [2022-01-11 06:39:43,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:43,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039498416] [2022-01-11 06:39:43,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:43,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:43,565 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 06:39:43,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:43,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039498416] [2022-01-11 06:39:43,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039498416] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:43,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:43,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:39:43,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001509954] [2022-01-11 06:39:43,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:43,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:39:43,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:43,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:39:43,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:39:43,568 INFO L87 Difference]: Start difference. First operand 5245 states and 7821 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 06:39:44,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:44,458 INFO L93 Difference]: Finished difference Result 9696 states and 14448 transitions. [2022-01-11 06:39:44,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:39:44,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 06:39:44,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:44,468 INFO L225 Difference]: With dead ends: 9696 [2022-01-11 06:39:44,468 INFO L226 Difference]: Without dead ends: 4958 [2022-01-11 06:39:44,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:39:44,473 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 1 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:44,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1302 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:44,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4958 states. [2022-01-11 06:39:45,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4958 to 4775. [2022-01-11 06:39:45,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4775 states, 4774 states have (on average 1.4842899036447423) internal successors, (7086), 4774 states have internal predecessors, (7086), 0 states have call successors, (0), 0 states 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 06:39:45,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4775 states to 4775 states and 7086 transitions. [2022-01-11 06:39:45,215 INFO L78 Accepts]: Start accepts. Automaton has 4775 states and 7086 transitions. Word has length 176 [2022-01-11 06:39:45,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:45,215 INFO L470 AbstractCegarLoop]: Abstraction has 4775 states and 7086 transitions. [2022-01-11 06:39:45,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 06:39:45,216 INFO L276 IsEmpty]: Start isEmpty. Operand 4775 states and 7086 transitions. [2022-01-11 06:39:45,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-11 06:39:45,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:45,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:45,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:39:45,224 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:45,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:45,224 INFO L85 PathProgramCache]: Analyzing trace with hash 166659175, now seen corresponding path program 1 times [2022-01-11 06:39:45,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:45,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386581863] [2022-01-11 06:39:45,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:45,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:45,412 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 06:39:45,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:45,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386581863] [2022-01-11 06:39:45,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386581863] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:45,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:45,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:45,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072392472] [2022-01-11 06:39:45,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:45,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:45,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:45,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:45,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:45,415 INFO L87 Difference]: Start difference. First operand 4775 states and 7086 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 06:39:45,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:45,783 INFO L93 Difference]: Finished difference Result 6701 states and 9979 transitions. [2022-01-11 06:39:45,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:45,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2022-01-11 06:39:45,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:45,788 INFO L225 Difference]: With dead ends: 6701 [2022-01-11 06:39:45,788 INFO L226 Difference]: Without dead ends: 2467 [2022-01-11 06:39:45,792 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 06:39:45,793 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 211 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:45,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 690 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:45,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2022-01-11 06:39:46,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2465. [2022-01-11 06:39:46,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2465 states, 2464 states have (on average 1.4667207792207793) internal successors, (3614), 2464 states have internal predecessors, (3614), 0 states have call successors, (0), 0 states 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 06:39:46,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3614 transitions. [2022-01-11 06:39:46,146 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3614 transitions. Word has length 178 [2022-01-11 06:39:46,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:46,146 INFO L470 AbstractCegarLoop]: Abstraction has 2465 states and 3614 transitions. [2022-01-11 06:39:46,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 06:39:46,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3614 transitions. [2022-01-11 06:39:46,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-11 06:39:46,152 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:46,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:46,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:39:46,152 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:46,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:46,153 INFO L85 PathProgramCache]: Analyzing trace with hash 201345627, now seen corresponding path program 1 times [2022-01-11 06:39:46,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:46,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327810580] [2022-01-11 06:39:46,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:46,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:46,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:39:46,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:46,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327810580] [2022-01-11 06:39:46,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327810580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:46,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:46,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:46,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156361316] [2022-01-11 06:39:46,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:46,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:46,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:46,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:46,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:46,351 INFO L87 Difference]: Start difference. First operand 2465 states and 3614 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 06:39:46,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:46,532 INFO L93 Difference]: Finished difference Result 3465 states and 5099 transitions. [2022-01-11 06:39:46,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:46,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2022-01-11 06:39:46,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:46,536 INFO L225 Difference]: With dead ends: 3465 [2022-01-11 06:39:46,536 INFO L226 Difference]: Without dead ends: 1285 [2022-01-11 06:39:46,538 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 06:39:46,539 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 186 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:46,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 639 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:46,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2022-01-11 06:39:46,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1283. [2022-01-11 06:39:46,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1282 states have (on average 1.4461778471138846) internal successors, (1854), 1282 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 06:39:46,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1854 transitions. [2022-01-11 06:39:46,693 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1854 transitions. Word has length 178 [2022-01-11 06:39:46,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:46,694 INFO L470 AbstractCegarLoop]: Abstraction has 1283 states and 1854 transitions. [2022-01-11 06:39:46,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 06:39:46,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1854 transitions. [2022-01-11 06:39:46,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-11 06:39:46,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:46,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:46,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:39:46,697 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:46,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:46,697 INFO L85 PathProgramCache]: Analyzing trace with hash -289486489, now seen corresponding path program 1 times [2022-01-11 06:39:46,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:46,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24909849] [2022-01-11 06:39:46,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:46,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:46,869 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 06:39:46,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:46,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24909849] [2022-01-11 06:39:46,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24909849] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:46,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:46,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:46,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529532651] [2022-01-11 06:39:46,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:46,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:46,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:46,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:46,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:46,871 INFO L87 Difference]: Start difference. First operand 1283 states and 1854 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 06:39:46,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:46,994 INFO L93 Difference]: Finished difference Result 1793 states and 2603 transitions. [2022-01-11 06:39:46,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:46,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2022-01-11 06:39:46,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:46,995 INFO L225 Difference]: With dead ends: 1793 [2022-01-11 06:39:46,995 INFO L226 Difference]: Without dead ends: 679 [2022-01-11 06:39:46,997 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 06:39:46,997 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 161 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:46,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 588 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:46,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-01-11 06:39:47,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 677. [2022-01-11 06:39:47,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 676 states have (on average 1.4201183431952662) internal successors, (960), 676 states have internal predecessors, (960), 0 states have call successors, (0), 0 states 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 06:39:47,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 960 transitions. [2022-01-11 06:39:47,096 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 960 transitions. Word has length 178 [2022-01-11 06:39:47,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:47,097 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 960 transitions. [2022-01-11 06:39:47,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 06:39:47,097 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 960 transitions. [2022-01-11 06:39:47,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-11 06:39:47,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:47,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:47,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 06:39:47,099 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:47,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:47,099 INFO L85 PathProgramCache]: Analyzing trace with hash -835338661, now seen corresponding path program 1 times [2022-01-11 06:39:47,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:47,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296872123] [2022-01-11 06:39:47,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:47,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:47,257 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 06:39:47,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:47,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296872123] [2022-01-11 06:39:47,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296872123] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:47,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:47,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:47,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865600783] [2022-01-11 06:39:47,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:47,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:47,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:47,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:47,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:47,260 INFO L87 Difference]: Start difference. First operand 677 states and 960 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 06:39:47,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:47,336 INFO L93 Difference]: Finished difference Result 927 states and 1323 transitions. [2022-01-11 06:39:47,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:47,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2022-01-11 06:39:47,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:47,338 INFO L225 Difference]: With dead ends: 927 [2022-01-11 06:39:47,338 INFO L226 Difference]: Without dead ends: 367 [2022-01-11 06:39:47,340 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 06:39:47,341 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 135 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:47,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 536 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:39:47,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-01-11 06:39:47,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2022-01-11 06:39:47,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.3846153846153846) internal successors, (504), 364 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 06:39:47,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 504 transitions. [2022-01-11 06:39:47,396 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 504 transitions. Word has length 178 [2022-01-11 06:39:47,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:47,396 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 504 transitions. [2022-01-11 06:39:47,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 06:39:47,396 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 504 transitions. [2022-01-11 06:39:47,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-11 06:39:47,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:47,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:47,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 06:39:47,398 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:47,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:47,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1620618182, now seen corresponding path program 1 times [2022-01-11 06:39:47,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:47,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844910749] [2022-01-11 06:39:47,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:47,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:47,567 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 06:39:47,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:47,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844910749] [2022-01-11 06:39:47,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844910749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:47,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:47,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:47,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515331205] [2022-01-11 06:39:47,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:47,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:47,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:47,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:47,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:47,571 INFO L87 Difference]: Start difference. First operand 365 states and 504 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 06:39:49,596 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 06:39:51,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:39:53,900 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:39:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:54,147 INFO L93 Difference]: Finished difference Result 711 states and 992 transitions. [2022-01-11 06:39:54,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:54,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2022-01-11 06:39:54,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:54,149 INFO L225 Difference]: With dead ends: 711 [2022-01-11 06:39:54,149 INFO L226 Difference]: Without dead ends: 454 [2022-01-11 06:39:54,149 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 06:39:54,153 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 109 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:54,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 703 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 33 Invalid, 3 Unknown, 0 Unchecked, 6.5s Time] [2022-01-11 06:39:54,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-01-11 06:39:54,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 441. [2022-01-11 06:39:54,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 1.365909090909091) internal successors, (601), 440 states have internal predecessors, (601), 0 states have call successors, (0), 0 states 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 06:39:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 601 transitions. [2022-01-11 06:39:54,239 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 601 transitions. Word has length 180 [2022-01-11 06:39:54,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:54,239 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 601 transitions. [2022-01-11 06:39:54,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 06:39:54,239 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 601 transitions. [2022-01-11 06:39:54,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-11 06:39:54,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:54,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:54,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 06:39:54,241 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:54,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:54,241 INFO L85 PathProgramCache]: Analyzing trace with hash -2010360384, now seen corresponding path program 1 times [2022-01-11 06:39:54,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:54,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506499222] [2022-01-11 06:39:54,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:54,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:54,485 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 06:39:54,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:54,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506499222] [2022-01-11 06:39:54,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506499222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:54,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:54,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:54,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987287005] [2022-01-11 06:39:54,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:54,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:54,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:54,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:54,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:54,488 INFO L87 Difference]: Start difference. First operand 441 states and 601 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 06:39:55,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:55,194 INFO L93 Difference]: Finished difference Result 928 states and 1285 transitions. [2022-01-11 06:39:55,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:55,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2022-01-11 06:39:55,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:55,196 INFO L225 Difference]: With dead ends: 928 [2022-01-11 06:39:55,197 INFO L226 Difference]: Without dead ends: 630 [2022-01-11 06:39:55,197 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 06:39:55,198 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 185 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:55,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 716 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-11 06:39:55,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2022-01-11 06:39:55,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 627. [2022-01-11 06:39:55,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 1.365814696485623) internal successors, (855), 626 states have internal predecessors, (855), 0 states have call successors, (0), 0 states 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 06:39:55,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 855 transitions. [2022-01-11 06:39:55,331 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 855 transitions. Word has length 181 [2022-01-11 06:39:55,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:55,331 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 855 transitions. [2022-01-11 06:39:55,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 06:39:55,331 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 855 transitions. [2022-01-11 06:39:55,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-11 06:39:55,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:55,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:55,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 06:39:55,333 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:55,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:55,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1200837883, now seen corresponding path program 1 times [2022-01-11 06:39:55,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:55,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164553479] [2022-01-11 06:39:55,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:55,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:39:55,540 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 06:39:55,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:39:55,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164553479] [2022-01-11 06:39:55,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164553479] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:39:55,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:39:55,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:39:55,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667929964] [2022-01-11 06:39:55,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:39:55,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:39:55,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:39:55,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:39:55,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:39:55,542 INFO L87 Difference]: Start difference. First operand 627 states and 855 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 06:39:57,644 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:39:57,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:39:57,894 INFO L93 Difference]: Finished difference Result 1025 states and 1408 transitions. [2022-01-11 06:39:57,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:39:57,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-01-11 06:39:57,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:39:57,895 INFO L225 Difference]: With dead ends: 1025 [2022-01-11 06:39:57,895 INFO L226 Difference]: Without dead ends: 642 [2022-01-11 06:39:57,896 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 06:39:57,897 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 158 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:39:57,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 615 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 06:39:57,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-01-11 06:39:57,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 636. [2022-01-11 06:39:57,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 635 states have (on average 1.352755905511811) internal successors, (859), 635 states have internal predecessors, (859), 0 states have call successors, (0), 0 states 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 06:39:57,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 859 transitions. [2022-01-11 06:39:57,995 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 859 transitions. Word has length 182 [2022-01-11 06:39:57,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:39:57,995 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 859 transitions. [2022-01-11 06:39:57,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 06:39:57,996 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 859 transitions. [2022-01-11 06:39:57,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-11 06:39:57,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:39:57,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:39:57,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 06:39:57,997 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:39:57,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:39:57,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1835214945, now seen corresponding path program 1 times [2022-01-11 06:39:57,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:39:57,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768852730] [2022-01-11 06:39:57,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:39:57,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:39:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:40:00,377 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 06:40:00,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:40:00,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768852730] [2022-01-11 06:40:00,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768852730] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:40:00,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:40:00,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-11 06:40:00,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312372464] [2022-01-11 06:40:00,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:40:00,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-11 06:40:00,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:40:00,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-11 06:40:00,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-11 06:40:00,380 INFO L87 Difference]: Start difference. First operand 636 states and 859 transitions. Second operand has 14 states, 14 states have (on average 13.0) internal successors, (182), 13 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 06:40:06,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:40:09,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:40:11,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:40:13,432 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:40:16,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:40:24,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []