/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:49:52,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:49:52,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:49:52,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 19:49:52,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 19:49:52,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 19:49:52,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 19:49:52,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 19:49:52,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 19:49:52,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 19:49:52,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 19:49:52,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 19:49:52,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 19:49:52,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 19:49:52,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 19:49:52,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 19:49:52,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 19:49:52,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:49:52,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:49:52,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:49:52,379 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 19:49:52,407 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:49:52,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:49:52,408 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:49:52,408 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:49:52,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:49:52,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:49:52,409 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:49:52,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:49:52,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:49:52,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:49:52,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:49:52,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:49:52,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:49:52,411 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:49:52,411 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:49:52,411 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:49:52,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:49:52,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:49:52,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:49:52,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:49:52,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:49:52,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:49:52,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:49:52,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:49:52,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:49:52,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:49:52,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:49:52,412 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:49:52,413 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:49:52,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:49:52,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:49:52,413 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:49:52,414 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:49:52,414 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:49:52,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:49:52,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:49:52,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:49:52,667 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:49:52,667 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:49:52,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-01-10 19:49:52,724 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee7ec58a9/d3540d6d270b40da9a71b26d377a6844/FLAG87da5fca9 [2022-01-10 19:49:53,410 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:49:53,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-01-10 19:49:53,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee7ec58a9/d3540d6d270b40da9a71b26d377a6844/FLAG87da5fca9 [2022-01-10 19:49:53,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee7ec58a9/d3540d6d270b40da9a71b26d377a6844 [2022-01-10 19:49:53,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:49:53,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:49:53,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:49:53,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:49:53,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:49:53,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:49:53" (1/1) ... [2022-01-10 19:49:53,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71d019e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:53, skipping insertion in model container [2022-01-10 19:49:53,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:49:53" (1/1) ... [2022-01-10 19:49:53,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:49:53,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:49:54,017 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[11742,11755] [2022-01-10 19:49:54,093 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[19490,19503] [2022-01-10 19:49:54,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:49:54,735 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:49:54,770 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[11742,11755] [2022-01-10 19:49:54,785 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[19490,19503] [2022-01-10 19:49:55,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:49:55,177 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:49:55,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:55 WrapperNode [2022-01-10 19:49:55,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:49:55,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:49:55,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:49:55,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:49:55,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:55" (1/1) ... [2022-01-10 19:49:55,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:55" (1/1) ... [2022-01-10 19:49:55,386 INFO L137 Inliner]: procedures = 38, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5062 [2022-01-10 19:49:55,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:49:55,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:49:55,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:49:55,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:49:55,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:55" (1/1) ... [2022-01-10 19:49:55,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:55" (1/1) ... [2022-01-10 19:49:55,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:55" (1/1) ... [2022-01-10 19:49:55,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:55" (1/1) ... [2022-01-10 19:49:55,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:55" (1/1) ... [2022-01-10 19:49:55,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:55" (1/1) ... [2022-01-10 19:49:55,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:55" (1/1) ... [2022-01-10 19:49:55,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:49:55,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:49:55,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:49:55,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:49:55,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:55" (1/1) ... [2022-01-10 19:49:55,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:49:55,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:49:55,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 19:49:55,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 19:49:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:49:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:49:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:49:55,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:49:55,844 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:49:55,845 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:50:19,909 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:50:19,944 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:50:19,945 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 19:50:19,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:50:19 BoogieIcfgContainer [2022-01-10 19:50:19,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:50:19,949 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:50:19,949 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:50:19,951 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:50:19,954 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:50:19" (1/1) ... [2022-01-10 19:50:21,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:50:21 BasicIcfg [2022-01-10 19:50:21,382 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:50:21,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:50:21,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:50:21,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:50:21,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:49:53" (1/4) ... [2022-01-10 19:50:21,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2ff554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:50:21, skipping insertion in model container [2022-01-10 19:50:21,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:55" (2/4) ... [2022-01-10 19:50:21,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2ff554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:50:21, skipping insertion in model container [2022-01-10 19:50:21,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:50:19" (3/4) ... [2022-01-10 19:50:21,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2ff554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:50:21, skipping insertion in model container [2022-01-10 19:50:21,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:50:21" (4/4) ... [2022-01-10 19:50:21,391 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.cTransformedIcfg [2022-01-10 19:50:21,395 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:50:21,395 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 19:50:21,445 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:50:21,452 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 19:50:21,453 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 19:50:21,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 909 states, 906 states have (on average 1.900662251655629) internal successors, (1722), 908 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:21,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 19:50:21,495 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:50:21,496 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] [2022-01-10 19:50:21,496 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:50:21,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:50:21,501 INFO L85 PathProgramCache]: Analyzing trace with hash 402591773, now seen corresponding path program 1 times [2022-01-10 19:50:21,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:50:21,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102419357] [2022-01-10 19:50:21,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:50:21,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:50:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:50:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:50:21,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:50:21,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102419357] [2022-01-10 19:50:21,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102419357] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:50:21,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:50:21,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:50:21,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59976845] [2022-01-10 19:50:21,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:50:21,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 19:50:21,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:50:21,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 19:50:21,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 19:50:21,793 INFO L87 Difference]: Start difference. First operand has 909 states, 906 states have (on average 1.900662251655629) internal successors, (1722), 908 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:21,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:50:21,874 INFO L93 Difference]: Finished difference Result 1779 states and 3372 transitions. [2022-01-10 19:50:21,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 19:50:21,876 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2022-01-10 19:50:21,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:50:21,900 INFO L225 Difference]: With dead ends: 1779 [2022-01-10 19:50:21,900 INFO L226 Difference]: Without dead ends: 843 [2022-01-10 19:50:21,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 19:50:21,912 INFO L933 BasicCegarLoop]: 1653 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:50:21,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:50:21,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-01-10 19:50:21,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2022-01-10 19:50:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 841 states have (on average 1.8894173602853745) internal successors, (1589), 842 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:21,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1589 transitions. [2022-01-10 19:50:21,999 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1589 transitions. Word has length 34 [2022-01-10 19:50:21,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:50:22,000 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 1589 transitions. [2022-01-10 19:50:22,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:22,001 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1589 transitions. [2022-01-10 19:50:22,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 19:50:22,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:50:22,007 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] [2022-01-10 19:50:22,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:50:22,007 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:50:22,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:50:22,009 INFO L85 PathProgramCache]: Analyzing trace with hash 147855228, now seen corresponding path program 1 times [2022-01-10 19:50:22,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:50:22,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123366058] [2022-01-10 19:50:22,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:50:22,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:50:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:50:22,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:50:22,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:50:22,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123366058] [2022-01-10 19:50:22,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123366058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:50:22,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:50:22,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:50:22,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273037683] [2022-01-10 19:50:22,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:50:22,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:50:22,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:50:22,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:50:22,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:50:22,313 INFO L87 Difference]: Start difference. First operand 843 states and 1589 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:22,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:50:22,498 INFO L93 Difference]: Finished difference Result 899 states and 1675 transitions. [2022-01-10 19:50:22,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 19:50:22,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2022-01-10 19:50:22,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:50:22,502 INFO L225 Difference]: With dead ends: 899 [2022-01-10 19:50:22,503 INFO L226 Difference]: Without dead ends: 843 [2022-01-10 19:50:22,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 19:50:22,507 INFO L933 BasicCegarLoop]: 1587 mSDtfsCounter, 3 mSDsluCounter, 4727 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6314 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:50:22,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6314 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:50:22,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-01-10 19:50:22,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2022-01-10 19:50:22,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 841 states have (on average 1.8525564803804995) internal successors, (1558), 842 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:22,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1558 transitions. [2022-01-10 19:50:22,535 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1558 transitions. Word has length 34 [2022-01-10 19:50:22,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:50:22,535 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 1558 transitions. [2022-01-10 19:50:22,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:22,537 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1558 transitions. [2022-01-10 19:50:22,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 19:50:22,544 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:50:22,544 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] [2022-01-10 19:50:22,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:50:22,550 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:50:22,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:50:22,550 INFO L85 PathProgramCache]: Analyzing trace with hash -794069192, now seen corresponding path program 1 times [2022-01-10 19:50:22,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:50:22,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139763707] [2022-01-10 19:50:22,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:50:22,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:50:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:50:22,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:50:22,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:50:22,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139763707] [2022-01-10 19:50:22,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139763707] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:50:22,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:50:22,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:50:22,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485819719] [2022-01-10 19:50:22,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:50:22,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:50:22,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:50:22,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:50:22,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:50:22,770 INFO L87 Difference]: Start difference. First operand 843 states and 1558 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:22,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:50:22,819 INFO L93 Difference]: Finished difference Result 941 states and 1712 transitions. [2022-01-10 19:50:22,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:50:22,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-10 19:50:22,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:50:22,825 INFO L225 Difference]: With dead ends: 941 [2022-01-10 19:50:22,825 INFO L226 Difference]: Without dead ends: 889 [2022-01-10 19:50:22,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:50:22,832 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 1511 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:50:22,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1511 Valid, 1706 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:50:22,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-01-10 19:50:22,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 887. [2022-01-10 19:50:22,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 885 states have (on average 1.83954802259887) internal successors, (1628), 886 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:22,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1628 transitions. [2022-01-10 19:50:22,853 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1628 transitions. Word has length 64 [2022-01-10 19:50:22,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:50:22,854 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 1628 transitions. [2022-01-10 19:50:22,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:22,854 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1628 transitions. [2022-01-10 19:50:22,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 19:50:22,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:50:22,855 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] [2022-01-10 19:50:22,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:50:22,857 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:50:22,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:50:22,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1693520807, now seen corresponding path program 1 times [2022-01-10 19:50:22,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:50:22,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516907882] [2022-01-10 19:50:22,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:50:22,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:50:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:50:23,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:50:23,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:50:23,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516907882] [2022-01-10 19:50:23,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516907882] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:50:23,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:50:23,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:50:23,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99071955] [2022-01-10 19:50:23,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:50:23,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:50:23,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:50:23,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:50:23,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:50:23,030 INFO L87 Difference]: Start difference. First operand 887 states and 1628 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:23,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:50:23,169 INFO L93 Difference]: Finished difference Result 1067 states and 1912 transitions. [2022-01-10 19:50:23,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:50:23,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-10 19:50:23,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:50:23,174 INFO L225 Difference]: With dead ends: 1067 [2022-01-10 19:50:23,175 INFO L226 Difference]: Without dead ends: 971 [2022-01-10 19:50:23,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:50:23,183 INFO L933 BasicCegarLoop]: 1621 mSDtfsCounter, 1507 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:50:23,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 1705 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:50:23,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-01-10 19:50:23,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 969. [2022-01-10 19:50:23,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 967 states have (on average 1.8169596690796277) internal successors, (1757), 968 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:23,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1757 transitions. [2022-01-10 19:50:23,208 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1757 transitions. Word has length 64 [2022-01-10 19:50:23,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:50:23,210 INFO L470 AbstractCegarLoop]: Abstraction has 969 states and 1757 transitions. [2022-01-10 19:50:23,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:23,210 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1757 transitions. [2022-01-10 19:50:23,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 19:50:23,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:50:23,212 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] [2022-01-10 19:50:23,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:50:23,213 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:50:23,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:50:23,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1559501306, now seen corresponding path program 1 times [2022-01-10 19:50:23,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:50:23,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936335877] [2022-01-10 19:50:23,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:50:23,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:50:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:50:23,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:50:23,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:50:23,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936335877] [2022-01-10 19:50:23,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936335877] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:50:23,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:50:23,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:50:23,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139375459] [2022-01-10 19:50:23,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:50:23,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:50:23,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:50:23,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:50:23,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:50:23,390 INFO L87 Difference]: Start difference. First operand 969 states and 1757 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:23,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:50:23,439 INFO L93 Difference]: Finished difference Result 1301 states and 2279 transitions. [2022-01-10 19:50:23,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:50:23,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-10 19:50:23,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:50:23,445 INFO L225 Difference]: With dead ends: 1301 [2022-01-10 19:50:23,445 INFO L226 Difference]: Without dead ends: 1123 [2022-01-10 19:50:23,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:50:23,447 INFO L933 BasicCegarLoop]: 1616 mSDtfsCounter, 1503 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:50:23,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1503 Valid, 1704 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:50:23,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2022-01-10 19:50:23,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1121. [2022-01-10 19:50:23,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 1119 states have (on average 1.7810545129579982) internal successors, (1993), 1120 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:23,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1993 transitions. [2022-01-10 19:50:23,479 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1993 transitions. Word has length 64 [2022-01-10 19:50:23,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:50:23,483 INFO L470 AbstractCegarLoop]: Abstraction has 1121 states and 1993 transitions. [2022-01-10 19:50:23,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:23,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1993 transitions. [2022-01-10 19:50:23,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 19:50:23,485 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:50:23,485 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] [2022-01-10 19:50:23,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 19:50:23,485 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:50:23,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:50:23,486 INFO L85 PathProgramCache]: Analyzing trace with hash -385138661, now seen corresponding path program 1 times [2022-01-10 19:50:23,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:50:23,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702801220] [2022-01-10 19:50:23,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:50:23,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:50:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:50:23,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:50:23,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:50:23,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702801220] [2022-01-10 19:50:23,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702801220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:50:23,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:50:23,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:50:23,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921142422] [2022-01-10 19:50:23,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:50:23,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:50:23,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:50:23,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:50:23,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:50:23,681 INFO L87 Difference]: Start difference. First operand 1121 states and 1993 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:23,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:50:23,726 INFO L93 Difference]: Finished difference Result 1733 states and 2947 transitions. [2022-01-10 19:50:23,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:50:23,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-10 19:50:23,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:50:23,736 INFO L225 Difference]: With dead ends: 1733 [2022-01-10 19:50:23,736 INFO L226 Difference]: Without dead ends: 1403 [2022-01-10 19:50:23,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:50:23,738 INFO L933 BasicCegarLoop]: 1611 mSDtfsCounter, 1499 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:50:23,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1499 Valid, 1703 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:50:23,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2022-01-10 19:50:23,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1401. [2022-01-10 19:50:23,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1399 states have (on average 1.7305218012866332) internal successors, (2421), 1400 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:23,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 2421 transitions. [2022-01-10 19:50:23,773 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 2421 transitions. Word has length 64 [2022-01-10 19:50:23,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:50:23,773 INFO L470 AbstractCegarLoop]: Abstraction has 1401 states and 2421 transitions. [2022-01-10 19:50:23,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:23,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 2421 transitions. [2022-01-10 19:50:23,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 19:50:23,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:50:23,775 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] [2022-01-10 19:50:23,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 19:50:23,775 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:50:23,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:50:23,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1948556988, now seen corresponding path program 1 times [2022-01-10 19:50:23,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:50:23,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475128255] [2022-01-10 19:50:23,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:50:23,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:50:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:50:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:50:24,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:50:24,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475128255] [2022-01-10 19:50:24,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475128255] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:50:24,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:50:24,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 19:50:24,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088478658] [2022-01-10 19:50:24,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:50:24,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 19:50:24,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:50:24,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 19:50:24,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 19:50:24,375 INFO L87 Difference]: Start difference. First operand 1401 states and 2421 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:27,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:50:27,052 INFO L93 Difference]: Finished difference Result 7501 states and 11871 transitions. [2022-01-10 19:50:27,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 19:50:27,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-10 19:50:27,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:50:27,078 INFO L225 Difference]: With dead ends: 7501 [2022-01-10 19:50:27,079 INFO L226 Difference]: Without dead ends: 6891 [2022-01-10 19:50:27,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-01-10 19:50:27,084 INFO L933 BasicCegarLoop]: 1552 mSDtfsCounter, 8283 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8283 SdHoareTripleChecker+Valid, 3045 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:50:27,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8283 Valid, 3045 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 19:50:27,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6891 states. [2022-01-10 19:50:27,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6891 to 2009. [2022-01-10 19:50:27,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2007 states have (on average 1.6606875934230194) internal successors, (3333), 2008 states have internal predecessors, (3333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:27,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3333 transitions. [2022-01-10 19:50:27,458 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3333 transitions. Word has length 64 [2022-01-10 19:50:27,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:50:27,458 INFO L470 AbstractCegarLoop]: Abstraction has 2009 states and 3333 transitions. [2022-01-10 19:50:27,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:27,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3333 transitions. [2022-01-10 19:50:27,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:50:27,459 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:50:27,459 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] [2022-01-10 19:50:27,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 19:50:27,460 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:50:27,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:50:27,460 INFO L85 PathProgramCache]: Analyzing trace with hash -991335005, now seen corresponding path program 1 times [2022-01-10 19:50:27,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:50:27,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193523449] [2022-01-10 19:50:27,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:50:27,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:50:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:50:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:50:27,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:50:27,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193523449] [2022-01-10 19:50:27,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193523449] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:50:27,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:50:27,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:50:27,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902081173] [2022-01-10 19:50:27,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:50:27,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:50:27,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:50:27,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:50:27,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:50:27,608 INFO L87 Difference]: Start difference. First operand 2009 states and 3333 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:28,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:50:28,190 INFO L93 Difference]: Finished difference Result 3885 states and 6151 transitions. [2022-01-10 19:50:28,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:50:28,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 19:50:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:50:28,199 INFO L225 Difference]: With dead ends: 3885 [2022-01-10 19:50:28,199 INFO L226 Difference]: Without dead ends: 2667 [2022-01-10 19:50:28,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:50:28,201 INFO L933 BasicCegarLoop]: 1623 mSDtfsCounter, 69 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:50:28,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 3171 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:50:28,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2667 states. [2022-01-10 19:50:28,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2667 to 2665. [2022-01-10 19:50:28,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2665 states, 2663 states have (on average 1.594066841907623) internal successors, (4245), 2664 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:28,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 4245 transitions. [2022-01-10 19:50:28,765 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 4245 transitions. Word has length 66 [2022-01-10 19:50:28,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:50:28,766 INFO L470 AbstractCegarLoop]: Abstraction has 2665 states and 4245 transitions. [2022-01-10 19:50:28,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:28,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 4245 transitions. [2022-01-10 19:50:28,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:50:28,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:50:28,767 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] [2022-01-10 19:50:28,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 19:50:28,767 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:50:28,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:50:28,767 INFO L85 PathProgramCache]: Analyzing trace with hash -959935291, now seen corresponding path program 1 times [2022-01-10 19:50:28,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:50:28,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440291210] [2022-01-10 19:50:28,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:50:28,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:50:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:50:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:50:29,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:50:29,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440291210] [2022-01-10 19:50:29,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440291210] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:50:29,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:50:29,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 19:50:29,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445748471] [2022-01-10 19:50:29,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:50:29,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 19:50:29,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:50:29,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 19:50:29,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 19:50:29,209 INFO L87 Difference]: Start difference. First operand 2665 states and 4245 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:33,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:50:33,008 INFO L93 Difference]: Finished difference Result 12045 states and 18095 transitions. [2022-01-10 19:50:33,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 19:50:33,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 19:50:33,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:50:33,056 INFO L225 Difference]: With dead ends: 12045 [2022-01-10 19:50:33,056 INFO L226 Difference]: Without dead ends: 10171 [2022-01-10 19:50:33,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-01-10 19:50:33,063 INFO L933 BasicCegarLoop]: 1590 mSDtfsCounter, 8127 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8127 SdHoareTripleChecker+Valid, 3072 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 19:50:33,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8127 Valid, 3072 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 19:50:33,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10171 states. [2022-01-10 19:50:34,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10171 to 2665. [2022-01-10 19:50:34,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2665 states, 2663 states have (on average 1.5880585805482539) internal successors, (4229), 2664 states have internal predecessors, (4229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:34,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 4229 transitions. [2022-01-10 19:50:34,018 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 4229 transitions. Word has length 66 [2022-01-10 19:50:34,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:50:34,018 INFO L470 AbstractCegarLoop]: Abstraction has 2665 states and 4229 transitions. [2022-01-10 19:50:34,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:34,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 4229 transitions. [2022-01-10 19:50:34,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:50:34,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:50:34,020 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] [2022-01-10 19:50:34,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 19:50:34,021 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:50:34,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:50:34,021 INFO L85 PathProgramCache]: Analyzing trace with hash 515170036, now seen corresponding path program 1 times [2022-01-10 19:50:34,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:50:34,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693442428] [2022-01-10 19:50:34,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:50:34,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:50:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:50:34,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:50:34,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:50:34,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693442428] [2022-01-10 19:50:34,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693442428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:50:34,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:50:34,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:50:34,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328292259] [2022-01-10 19:50:34,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:50:34,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:50:34,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:50:34,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:50:34,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:50:34,129 INFO L87 Difference]: Start difference. First operand 2665 states and 4229 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:35,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:50:35,506 INFO L93 Difference]: Finished difference Result 6125 states and 9255 transitions. [2022-01-10 19:50:35,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:50:35,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 19:50:35,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:50:35,515 INFO L225 Difference]: With dead ends: 6125 [2022-01-10 19:50:35,515 INFO L226 Difference]: Without dead ends: 4251 [2022-01-10 19:50:35,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:50:35,518 INFO L933 BasicCegarLoop]: 1606 mSDtfsCounter, 1495 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:50:35,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1495 Valid, 1702 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:50:35,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2022-01-10 19:50:36,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 4249. [2022-01-10 19:50:36,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4249 states, 4247 states have (on average 1.519425476807158) internal successors, (6453), 4248 states have internal predecessors, (6453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:36,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4249 states to 4249 states and 6453 transitions. [2022-01-10 19:50:36,801 INFO L78 Accepts]: Start accepts. Automaton has 4249 states and 6453 transitions. Word has length 66 [2022-01-10 19:50:36,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:50:36,802 INFO L470 AbstractCegarLoop]: Abstraction has 4249 states and 6453 transitions. [2022-01-10 19:50:36,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:36,802 INFO L276 IsEmpty]: Start isEmpty. Operand 4249 states and 6453 transitions. [2022-01-10 19:50:36,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 19:50:36,803 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:50:36,803 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] [2022-01-10 19:50:36,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 19:50:36,803 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:50:36,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:50:36,804 INFO L85 PathProgramCache]: Analyzing trace with hash -622586280, now seen corresponding path program 1 times [2022-01-10 19:50:36,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:50:36,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335705976] [2022-01-10 19:50:36,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:50:36,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:50:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:50:36,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:50:36,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:50:36,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335705976] [2022-01-10 19:50:36,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335705976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:50:36,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:50:36,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:50:36,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077341520] [2022-01-10 19:50:36,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:50:36,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:50:36,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:50:36,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:50:36,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:50:36,933 INFO L87 Difference]: Start difference. First operand 4249 states and 6453 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:38,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:50:38,475 INFO L93 Difference]: Finished difference Result 8751 states and 12969 transitions. [2022-01-10 19:50:38,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:50:38,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 19:50:38,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:50:38,486 INFO L225 Difference]: With dead ends: 8751 [2022-01-10 19:50:38,486 INFO L226 Difference]: Without dead ends: 5293 [2022-01-10 19:50:38,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:50:38,508 INFO L933 BasicCegarLoop]: 1589 mSDtfsCounter, 1487 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1666 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 [2022-01-10 19:50:38,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 1666 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:50:38,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5293 states. [2022-01-10 19:50:40,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5293 to 5291. [2022-01-10 19:50:40,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5291 states, 5289 states have (on average 1.501796180752505) internal successors, (7943), 5290 states have internal predecessors, (7943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:40,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5291 states to 5291 states and 7943 transitions. [2022-01-10 19:50:40,239 INFO L78 Accepts]: Start accepts. Automaton has 5291 states and 7943 transitions. Word has length 67 [2022-01-10 19:50:40,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:50:40,239 INFO L470 AbstractCegarLoop]: Abstraction has 5291 states and 7943 transitions. [2022-01-10 19:50:40,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:40,240 INFO L276 IsEmpty]: Start isEmpty. Operand 5291 states and 7943 transitions. [2022-01-10 19:50:40,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 19:50:40,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:50:40,241 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] [2022-01-10 19:50:40,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 19:50:40,241 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:50:40,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:50:40,241 INFO L85 PathProgramCache]: Analyzing trace with hash 283387821, now seen corresponding path program 1 times [2022-01-10 19:50:40,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:50:40,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098680415] [2022-01-10 19:50:40,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:50:40,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:50:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:50:40,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:50:40,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:50:40,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098680415] [2022-01-10 19:50:40,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098680415] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:50:40,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:50:40,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:50:40,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291907816] [2022-01-10 19:50:40,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:50:40,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:50:40,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:50:40,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:50:40,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:50:40,371 INFO L87 Difference]: Start difference. First operand 5291 states and 7943 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:42,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:50:42,333 INFO L93 Difference]: Finished difference Result 7078 states and 10544 transitions. [2022-01-10 19:50:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 19:50:42,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 19:50:42,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:50:42,347 INFO L225 Difference]: With dead ends: 7078 [2022-01-10 19:50:42,347 INFO L226 Difference]: Without dead ends: 7076 [2022-01-10 19:50:42,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:50:42,349 INFO L933 BasicCegarLoop]: 1587 mSDtfsCounter, 283 mSDsluCounter, 4670 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 6257 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:50:42,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 6257 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:50:42,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7076 states. [2022-01-10 19:50:43,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7076 to 5387. [2022-01-10 19:50:43,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5387 states, 5385 states have (on average 1.483936861652739) internal successors, (7991), 5386 states have internal predecessors, (7991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:43,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5387 states to 5387 states and 7991 transitions. [2022-01-10 19:50:43,976 INFO L78 Accepts]: Start accepts. Automaton has 5387 states and 7991 transitions. Word has length 67 [2022-01-10 19:50:43,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:50:43,976 INFO L470 AbstractCegarLoop]: Abstraction has 5387 states and 7991 transitions. [2022-01-10 19:50:43,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:43,977 INFO L276 IsEmpty]: Start isEmpty. Operand 5387 states and 7991 transitions. [2022-01-10 19:50:43,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 19:50:43,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:50:43,977 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] [2022-01-10 19:50:43,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 19:50:43,978 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:50:43,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:50:43,978 INFO L85 PathProgramCache]: Analyzing trace with hash 572864924, now seen corresponding path program 1 times [2022-01-10 19:50:43,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:50:43,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846604787] [2022-01-10 19:50:43,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:50:43,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:50:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:50:44,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:50:44,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:50:44,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846604787] [2022-01-10 19:50:44,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846604787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:50:44,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:50:44,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:50:44,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569359523] [2022-01-10 19:50:44,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:50:44,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:50:44,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:50:44,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:50:44,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:50:44,065 INFO L87 Difference]: Start difference. First operand 5387 states and 7991 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:50:46,291 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 [] [2022-01-10 19:50:48,461 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:50:51,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []