/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:26:48,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:26:48,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:26:48,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 00:26:48,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:26:48,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:26:48,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:26:48,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:26:48,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:26:48,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:26:48,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:26:48,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:26:48,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:26:48,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:26:48,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:26:48,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:26:48,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 00:26:48,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:26:48,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:26:48,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:26:48,923 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:26:48,940 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:26:48,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:26:48,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:26:48,941 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:26:48,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:26:48,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:26:48,942 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:26:48,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:26:48,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:26:48,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:26:48,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:26:48,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:26:48,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:26:48,943 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:26:48,943 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:26:48,943 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:26:48,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:26:48,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:26:48,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:26:48,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:26:48,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:26:48,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:26:48,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:26:48,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:26:48,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:26:48,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:26:48,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:26:48,944 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:26:48,944 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:26:48,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:26:48,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:26:48,944 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:26:48,945 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:26:48,945 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:26:49,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:26:49,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:26:49,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:26:49,163 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:26:49,163 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:26:49,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c [2022-01-11 00:26:49,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6156456af/1e867efbe5004e9ea91c5794d0625742/FLAG90e098def [2022-01-11 00:26:49,588 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:26:49,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c [2022-01-11 00:26:49,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6156456af/1e867efbe5004e9ea91c5794d0625742/FLAG90e098def [2022-01-11 00:26:49,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6156456af/1e867efbe5004e9ea91c5794d0625742 [2022-01-11 00:26:49,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:26:49,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:26:49,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:26:49,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:26:49,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:26:49,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:26:49" (1/1) ... [2022-01-11 00:26:49,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@314bed48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:26:49, skipping insertion in model container [2022-01-11 00:26:49,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:26:49" (1/1) ... [2022-01-11 00:26:49,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:26:49,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:26:49,831 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c[8379,8392] [2022-01-11 00:26:49,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:26:49,839 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:26:49,867 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c[8379,8392] [2022-01-11 00:26:49,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:26:49,877 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:26:49,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:26:49 WrapperNode [2022-01-11 00:26:49,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:26:49,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:26:49,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:26:49,879 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:26:49,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:26:49" (1/1) ... [2022-01-11 00:26:49,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:26:49" (1/1) ... [2022-01-11 00:26:49,911 INFO L137 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 258 [2022-01-11 00:26:49,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:26:49,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:26:49,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:26:49,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:26:49,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:26:49" (1/1) ... [2022-01-11 00:26:49,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:26:49" (1/1) ... [2022-01-11 00:26:49,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:26:49" (1/1) ... [2022-01-11 00:26:49,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:26:49" (1/1) ... [2022-01-11 00:26:49,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:26:49" (1/1) ... [2022-01-11 00:26:49,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:26:49" (1/1) ... [2022-01-11 00:26:49,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:26:49" (1/1) ... [2022-01-11 00:26:49,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:26:49,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:26:49,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:26:49,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:26:49,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:26:49" (1/1) ... [2022-01-11 00:26:49,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:26:49,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:26:49,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 00:26:49,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 00:26:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:26:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:26:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:26:50,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:26:50,079 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:26:50,080 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:26:50,293 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:26:50,298 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:26:50,298 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 00:26:50,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:26:50 BoogieIcfgContainer [2022-01-11 00:26:50,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:26:50,300 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:26:50,300 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:26:50,301 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:26:50,303 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:26:50" (1/1) ... [2022-01-11 00:26:50,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:26:50 BasicIcfg [2022-01-11 00:26:50,552 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:26:50,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:26:50,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:26:50,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:26:50,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:26:49" (1/4) ... [2022-01-11 00:26:50,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4825b30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:26:50, skipping insertion in model container [2022-01-11 00:26:50,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:26:49" (2/4) ... [2022-01-11 00:26:50,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4825b30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:26:50, skipping insertion in model container [2022-01-11 00:26:50,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:26:50" (3/4) ... [2022-01-11 00:26:50,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4825b30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:26:50, skipping insertion in model container [2022-01-11 00:26:50,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:26:50" (4/4) ... [2022-01-11 00:26:50,561 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals.cTransformedIcfg [2022-01-11 00:26:50,567 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:26:50,567 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:26:50,610 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:26:50,614 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 00:26:50,614 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:26:50,627 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 75 states have (on average 1.7066666666666668) internal successors, (128), 76 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:50,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-11 00:26:50,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:26:50,632 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] [2022-01-11 00:26:50,633 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:26:50,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:26:50,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1162864973, now seen corresponding path program 1 times [2022-01-11 00:26:50,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:26:50,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707832391] [2022-01-11 00:26:50,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:26:50,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:26:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:26:50,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:26:50,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:26:50,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707832391] [2022-01-11 00:26:50,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707832391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:26:50,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:26:50,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:26:50,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233789412] [2022-01-11 00:26:50,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:26:50,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 00:26:50,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:26:50,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 00:26:50,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 00:26:50,928 INFO L87 Difference]: Start difference. First operand has 77 states, 75 states have (on average 1.7066666666666668) internal successors, (128), 76 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:50,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:26:50,959 INFO L93 Difference]: Finished difference Result 122 states and 201 transitions. [2022-01-11 00:26:50,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 00:26:50,961 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-01-11 00:26:50,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:26:50,969 INFO L225 Difference]: With dead ends: 122 [2022-01-11 00:26:50,969 INFO L226 Difference]: Without dead ends: 73 [2022-01-11 00:26:50,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 00:26:50,976 INFO L933 BasicCegarLoop]: 121 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, 121 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:26:50,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:26:50,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-11 00:26:51,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-01-11 00:26:51,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.6805555555555556) internal successors, (121), 72 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:51,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 121 transitions. [2022-01-11 00:26:51,011 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 121 transitions. Word has length 29 [2022-01-11 00:26:51,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:26:51,012 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 121 transitions. [2022-01-11 00:26:51,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:51,012 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 121 transitions. [2022-01-11 00:26:51,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-11 00:26:51,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:26:51,013 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] [2022-01-11 00:26:51,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:26:51,014 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:26:51,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:26:51,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1229871726, now seen corresponding path program 1 times [2022-01-11 00:26:51,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:26:51,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141512922] [2022-01-11 00:26:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:26:51,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:26:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:26:51,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:26:51,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:26:51,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141512922] [2022-01-11 00:26:51,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141512922] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:26:51,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:26:51,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:26:51,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793053482] [2022-01-11 00:26:51,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:26:51,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:26:51,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:26:51,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:26:51,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:26:51,221 INFO L87 Difference]: Start difference. First operand 73 states and 121 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:51,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:26:51,299 INFO L93 Difference]: Finished difference Result 121 states and 194 transitions. [2022-01-11 00:26:51,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:26:51,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-01-11 00:26:51,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:26:51,302 INFO L225 Difference]: With dead ends: 121 [2022-01-11 00:26:51,302 INFO L226 Difference]: Without dead ends: 73 [2022-01-11 00:26:51,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:26:51,303 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 3 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:26:51,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 450 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:26:51,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-11 00:26:51,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-01-11 00:26:51,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3611111111111112) internal successors, (98), 72 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:51,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 98 transitions. [2022-01-11 00:26:51,307 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 98 transitions. Word has length 29 [2022-01-11 00:26:51,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:26:51,308 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 98 transitions. [2022-01-11 00:26:51,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:51,308 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 98 transitions. [2022-01-11 00:26:51,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-11 00:26:51,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:26:51,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:26:51,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:26:51,309 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:26:51,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:26:51,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1730105910, now seen corresponding path program 1 times [2022-01-11 00:26:51,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:26:51,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167500594] [2022-01-11 00:26:51,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:26:51,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:26:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:26:51,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:26:51,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:26:51,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167500594] [2022-01-11 00:26:51,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167500594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:26:51,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:26:51,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:26:51,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103560304] [2022-01-11 00:26:51,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:26:51,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:26:51,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:26:51,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:26:51,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:26:51,414 INFO L87 Difference]: Start difference. First operand 73 states and 98 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:51,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:26:51,435 INFO L93 Difference]: Finished difference Result 155 states and 226 transitions. [2022-01-11 00:26:51,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:26:51,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-01-11 00:26:51,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:26:51,440 INFO L225 Difference]: With dead ends: 155 [2022-01-11 00:26:51,440 INFO L226 Difference]: Without dead ends: 111 [2022-01-11 00:26:51,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:26:51,445 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 59 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:26:51,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 220 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:26:51,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-01-11 00:26:51,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2022-01-11 00:26:51,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.4351851851851851) internal successors, (155), 108 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:51,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 155 transitions. [2022-01-11 00:26:51,455 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 155 transitions. Word has length 51 [2022-01-11 00:26:51,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:26:51,456 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 155 transitions. [2022-01-11 00:26:51,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:51,456 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 155 transitions. [2022-01-11 00:26:51,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-11 00:26:51,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:26:51,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:26:51,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:26:51,457 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:26:51,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:26:51,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1522916203, now seen corresponding path program 1 times [2022-01-11 00:26:51,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:26:51,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925401958] [2022-01-11 00:26:51,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:26:51,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:26:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:26:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:26:51,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:26:51,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925401958] [2022-01-11 00:26:51,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925401958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:26:51,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:26:51,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:26:51,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102803221] [2022-01-11 00:26:51,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:26:51,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:26:51,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:26:51,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:26:51,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:26:51,588 INFO L87 Difference]: Start difference. First operand 109 states and 155 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:51,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:26:51,606 INFO L93 Difference]: Finished difference Result 257 states and 387 transitions. [2022-01-11 00:26:51,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:26:51,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-01-11 00:26:51,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:26:51,608 INFO L225 Difference]: With dead ends: 257 [2022-01-11 00:26:51,608 INFO L226 Difference]: Without dead ends: 177 [2022-01-11 00:26:51,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:26:51,618 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 55 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:26:51,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 219 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:26:51,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-01-11 00:26:51,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2022-01-11 00:26:51,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.4827586206896552) internal successors, (258), 174 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:51,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 258 transitions. [2022-01-11 00:26:51,631 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 258 transitions. Word has length 51 [2022-01-11 00:26:51,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:26:51,631 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 258 transitions. [2022-01-11 00:26:51,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:51,631 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 258 transitions. [2022-01-11 00:26:51,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-11 00:26:51,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:26:51,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:26:51,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:26:51,632 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:26:51,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:26:51,633 INFO L85 PathProgramCache]: Analyzing trace with hash -421723764, now seen corresponding path program 1 times [2022-01-11 00:26:51,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:26:51,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300363574] [2022-01-11 00:26:51,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:26:51,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:26:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:26:51,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:26:51,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:26:51,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300363574] [2022-01-11 00:26:51,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300363574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:26:51,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:26:51,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:26:51,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603859450] [2022-01-11 00:26:51,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:26:51,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:26:51,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:26:51,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:26:51,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:26:51,732 INFO L87 Difference]: Start difference. First operand 175 states and 258 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:51,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:26:51,749 INFO L93 Difference]: Finished difference Result 443 states and 676 transitions. [2022-01-11 00:26:51,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:26:51,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-01-11 00:26:51,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:26:51,752 INFO L225 Difference]: With dead ends: 443 [2022-01-11 00:26:51,752 INFO L226 Difference]: Without dead ends: 297 [2022-01-11 00:26:51,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:26:51,755 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 51 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:26:51,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 218 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:26:51,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-01-11 00:26:51,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2022-01-11 00:26:51,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.5034013605442176) internal successors, (442), 294 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:51,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 442 transitions. [2022-01-11 00:26:51,779 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 442 transitions. Word has length 51 [2022-01-11 00:26:51,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:26:51,780 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 442 transitions. [2022-01-11 00:26:51,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:51,780 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 442 transitions. [2022-01-11 00:26:51,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-11 00:26:51,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:26:51,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:26:51,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:26:51,781 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:26:51,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:26:51,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1911971885, now seen corresponding path program 1 times [2022-01-11 00:26:51,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:26:51,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834834832] [2022-01-11 00:26:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:26:51,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:26:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:26:52,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:26:52,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:26:52,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834834832] [2022-01-11 00:26:52,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834834832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:26:52,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:26:52,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:26:52,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569756812] [2022-01-11 00:26:52,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:26:52,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:26:52,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:26:52,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:26:52,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:26:52,091 INFO L87 Difference]: Start difference. First operand 295 states and 442 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:52,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:26:52,897 INFO L93 Difference]: Finished difference Result 2423 states and 3746 transitions. [2022-01-11 00:26:52,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:26:52,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-01-11 00:26:52,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:26:52,906 INFO L225 Difference]: With dead ends: 2423 [2022-01-11 00:26:52,906 INFO L226 Difference]: Without dead ends: 2157 [2022-01-11 00:26:52,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-11 00:26:52,908 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 687 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 00:26:52,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 866 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 00:26:52,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2022-01-11 00:26:52,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 559. [2022-01-11 00:26:52,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 558 states have (on average 1.5017921146953406) internal successors, (838), 558 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:52,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 838 transitions. [2022-01-11 00:26:52,997 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 838 transitions. Word has length 51 [2022-01-11 00:26:52,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:26:52,998 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 838 transitions. [2022-01-11 00:26:52,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:52,998 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 838 transitions. [2022-01-11 00:26:53,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-11 00:26:53,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:26:53,002 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] [2022-01-11 00:26:53,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:26:53,002 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:26:53,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:26:53,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1789705553, now seen corresponding path program 1 times [2022-01-11 00:26:53,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:26:53,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250599395] [2022-01-11 00:26:53,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:26:53,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:26:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:26:53,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:26:53,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:26:53,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250599395] [2022-01-11 00:26:53,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250599395] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:26:53,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:26:53,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:26:53,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255659735] [2022-01-11 00:26:53,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:26:53,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:26:53,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:26:53,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:26:53,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:26:53,161 INFO L87 Difference]: Start difference. First operand 559 states and 838 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:53,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:26:53,358 INFO L93 Difference]: Finished difference Result 1379 states and 2068 transitions. [2022-01-11 00:26:53,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:26:53,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-11 00:26:53,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:26:53,361 INFO L225 Difference]: With dead ends: 1379 [2022-01-11 00:26:53,361 INFO L226 Difference]: Without dead ends: 849 [2022-01-11 00:26:53,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:26:53,362 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 56 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 238 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 [2022-01-11 00:26:53,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 238 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:26:53,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-01-11 00:26:53,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 847. [2022-01-11 00:26:53,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 846 states have (on average 1.458628841607565) internal successors, (1234), 846 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:53,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1234 transitions. [2022-01-11 00:26:53,495 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1234 transitions. Word has length 53 [2022-01-11 00:26:53,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:26:53,495 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 1234 transitions. [2022-01-11 00:26:53,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:53,496 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1234 transitions. [2022-01-11 00:26:53,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-11 00:26:53,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:26:53,496 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:26:53,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:26:53,497 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:26:53,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:26:53,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1758305839, now seen corresponding path program 1 times [2022-01-11 00:26:53,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:26:53,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780400297] [2022-01-11 00:26:53,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:26:53,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:26:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:26:53,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:26:53,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:26:53,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780400297] [2022-01-11 00:26:53,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780400297] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:26:53,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:26:53,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:26:53,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710924128] [2022-01-11 00:26:53,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:26:53,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:26:53,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:26:53,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:26:53,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:26:53,767 INFO L87 Difference]: Start difference. First operand 847 states and 1234 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:54,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:26:54,763 INFO L93 Difference]: Finished difference Result 4127 states and 6058 transitions. [2022-01-11 00:26:54,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:26:54,764 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-11 00:26:54,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:26:54,773 INFO L225 Difference]: With dead ends: 4127 [2022-01-11 00:26:54,773 INFO L226 Difference]: Without dead ends: 3309 [2022-01-11 00:26:54,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-11 00:26:54,774 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 591 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:26:54,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [591 Valid, 889 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:26:54,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3309 states. [2022-01-11 00:26:54,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3309 to 847. [2022-01-11 00:26:54,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 846 states have (on average 1.4491725768321513) internal successors, (1226), 846 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:54,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1226 transitions. [2022-01-11 00:26:54,966 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1226 transitions. Word has length 53 [2022-01-11 00:26:54,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:26:54,966 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 1226 transitions. [2022-01-11 00:26:54,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:54,966 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1226 transitions. [2022-01-11 00:26:54,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-11 00:26:54,967 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:26:54,967 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] [2022-01-11 00:26:54,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:26:54,967 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:26:54,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:26:54,968 INFO L85 PathProgramCache]: Analyzing trace with hash 985122696, now seen corresponding path program 1 times [2022-01-11 00:26:54,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:26:54,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806458706] [2022-01-11 00:26:54,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:26:54,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:26:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:26:55,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:26:55,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:26:55,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806458706] [2022-01-11 00:26:55,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806458706] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:26:55,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:26:55,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:26:55,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661139633] [2022-01-11 00:26:55,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:26:55,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:26:55,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:26:55,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:26:55,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:26:55,022 INFO L87 Difference]: Start difference. First operand 847 states and 1226 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:55,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:26:55,365 INFO L93 Difference]: Finished difference Result 2339 states and 3380 transitions. [2022-01-11 00:26:55,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:26:55,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-11 00:26:55,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:26:55,369 INFO L225 Difference]: With dead ends: 2339 [2022-01-11 00:26:55,369 INFO L226 Difference]: Without dead ends: 1521 [2022-01-11 00:26:55,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:26:55,370 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 47 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:26:55,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 217 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:26:55,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2022-01-11 00:26:55,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1519. [2022-01-11 00:26:55,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 1.4216073781291172) internal successors, (2158), 1518 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:55,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2158 transitions. [2022-01-11 00:26:55,705 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2158 transitions. Word has length 53 [2022-01-11 00:26:55,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:26:55,705 INFO L470 AbstractCegarLoop]: Abstraction has 1519 states and 2158 transitions. [2022-01-11 00:26:55,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:55,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2158 transitions. [2022-01-11 00:26:55,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-11 00:26:55,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:26:55,708 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] [2022-01-11 00:26:55,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:26:55,708 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:26:55,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:26:55,708 INFO L85 PathProgramCache]: Analyzing trace with hash 388645069, now seen corresponding path program 1 times [2022-01-11 00:26:55,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:26:55,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285111370] [2022-01-11 00:26:55,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:26:55,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:26:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:26:55,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:26:55,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:26:55,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285111370] [2022-01-11 00:26:55,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285111370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:26:55,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:26:55,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:26:55,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97808068] [2022-01-11 00:26:55,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:26:55,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:26:55,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:26:55,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:26:55,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:26:55,808 INFO L87 Difference]: Start difference. First operand 1519 states and 2158 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:56,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:26:56,341 INFO L93 Difference]: Finished difference Result 3453 states and 4938 transitions. [2022-01-11 00:26:56,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:26:56,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-11 00:26:56,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:26:56,347 INFO L225 Difference]: With dead ends: 3453 [2022-01-11 00:26:56,347 INFO L226 Difference]: Without dead ends: 1963 [2022-01-11 00:26:56,348 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 [2022-01-11 00:26:56,349 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 39 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:26:56,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 185 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:26:56,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2022-01-11 00:26:56,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1961. [2022-01-11 00:26:56,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1960 states have (on average 1.420408163265306) internal successors, (2784), 1960 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:56,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2784 transitions. [2022-01-11 00:26:56,787 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2784 transitions. Word has length 54 [2022-01-11 00:26:56,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:26:56,787 INFO L470 AbstractCegarLoop]: Abstraction has 1961 states and 2784 transitions. [2022-01-11 00:26:56,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:56,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2784 transitions. [2022-01-11 00:26:56,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-11 00:26:56,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:26:56,787 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] [2022-01-11 00:26:56,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:26:56,788 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:26:56,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:26:56,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1299236775, now seen corresponding path program 1 times [2022-01-11 00:26:56,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:26:56,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324051664] [2022-01-11 00:26:56,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:26:56,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:26:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:26:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:26:56,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:26:56,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324051664] [2022-01-11 00:26:56,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324051664] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:26:56,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:26:56,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:26:56,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086024002] [2022-01-11 00:26:56,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:26:56,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:26:56,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:26:56,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:26:56,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:26:56,855 INFO L87 Difference]: Start difference. First operand 1961 states and 2784 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:57,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:26:57,504 INFO L93 Difference]: Finished difference Result 2672 states and 3808 transitions. [2022-01-11 00:26:57,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 00:26:57,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-11 00:26:57,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:26:57,512 INFO L225 Difference]: With dead ends: 2672 [2022-01-11 00:26:57,512 INFO L226 Difference]: Without dead ends: 2670 [2022-01-11 00:26:57,512 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 [2022-01-11 00:26:57,513 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 231 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 410 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 [2022-01-11 00:26:57,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 410 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:26:57,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2022-01-11 00:26:58,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 2009. [2022-01-11 00:26:58,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2008 states have (on average 1.3984063745019921) internal successors, (2808), 2008 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:58,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2808 transitions. [2022-01-11 00:26:58,030 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2808 transitions. Word has length 54 [2022-01-11 00:26:58,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:26:58,030 INFO L470 AbstractCegarLoop]: Abstraction has 2009 states and 2808 transitions. [2022-01-11 00:26:58,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:58,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2808 transitions. [2022-01-11 00:26:58,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 00:26:58,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:26:58,031 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:26:58,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:26:58,032 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:26:58,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:26:58,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1001335066, now seen corresponding path program 1 times [2022-01-11 00:26:58,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:26:58,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645585788] [2022-01-11 00:26:58,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:26:58,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:26:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:26:58,102 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:26:58,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:26:58,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645585788] [2022-01-11 00:26:58,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645585788] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:26:58,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:26:58,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:26:58,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240884017] [2022-01-11 00:26:58,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:26:58,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:26:58,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:26:58,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:26:58,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:26:58,103 INFO L87 Difference]: Start difference. First operand 2009 states and 2808 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:58,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:26:58,568 INFO L93 Difference]: Finished difference Result 3989 states and 5586 transitions. [2022-01-11 00:26:58,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:26:58,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-01-11 00:26:58,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:26:58,573 INFO L225 Difference]: With dead ends: 3989 [2022-01-11 00:26:58,573 INFO L226 Difference]: Without dead ends: 2011 [2022-01-11 00:26:58,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:26:58,575 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 40 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:26:58,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 206 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:26:58,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2022-01-11 00:26:59,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 2009. [2022-01-11 00:26:59,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2008 states have (on average 1.3824701195219125) internal successors, (2776), 2008 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:59,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2776 transitions. [2022-01-11 00:26:59,021 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2776 transitions. Word has length 78 [2022-01-11 00:26:59,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:26:59,021 INFO L470 AbstractCegarLoop]: Abstraction has 2009 states and 2776 transitions. [2022-01-11 00:26:59,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:26:59,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2776 transitions. [2022-01-11 00:26:59,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 00:26:59,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:26:59,022 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:26:59,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:26:59,023 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:26:59,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:26:59,023 INFO L85 PathProgramCache]: Analyzing trace with hash 178475513, now seen corresponding path program 1 times [2022-01-11 00:26:59,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:26:59,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958417765] [2022-01-11 00:26:59,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:26:59,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:26:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:26:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:26:59,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:26:59,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958417765] [2022-01-11 00:26:59,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958417765] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:26:59,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801555760] [2022-01-11 00:26:59,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:26:59,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:26:59,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:26:59,521 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:26:59,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process