/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-acceleration/array_2-2-simple.i
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-05ce600
[2022-02-24 01:14:15,859 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-02-24 01:14:15,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-02-24 01:14:15,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-02-24 01:14:15,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-02-24 01:14:15,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-02-24 01:14:15,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-02-24 01:14:15,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-02-24 01:14:15,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-02-24 01:14:15,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-02-24 01:14:15,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-02-24 01:14:15,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-02-24 01:14:15,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-02-24 01:14:15,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-02-24 01:14:15,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-02-24 01:14:15,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-02-24 01:14:15,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-02-24 01:14:15,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-02-24 01:14:15,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-02-24 01:14:15,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-02-24 01:14:15,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-02-24 01:14:15,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-02-24 01:14:15,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-02-24 01:14:15,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-02-24 01:14:15,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-02-24 01:14:15,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-02-24 01:14:15,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-02-24 01:14:15,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-02-24 01:14:15,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-02-24 01:14:15,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-02-24 01:14:15,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-02-24 01:14:15,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-02-24 01:14:15,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-02-24 01:14:15,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-02-24 01:14:15,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-02-24 01:14:15,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
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[2022-02-24 01:14:15,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2022-02-24 01:14:15,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-02-24 01:14:15,965 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf
[2022-02-24 01:14:15,973 INFO L113 SettingsManager]: Loading preferences was successful
[2022-02-24 01:14:15,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-02-24 01:14:15,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-02-24 01:14:15,975 INFO L138 SettingsManager]: * sizeof long=4
[2022-02-24 01:14:15,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-02-24 01:14:15,975 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-02-24 01:14:15,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-02-24 01:14:15,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-02-24 01:14:15,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-02-24 01:14:15,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-02-24 01:14:15,976 INFO L138 SettingsManager]: * sizeof long double=12
[2022-02-24 01:14:15,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-02-24 01:14:15,976 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-02-24 01:14:15,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-02-24 01:14:15,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-02-24 01:14:15,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-02-24 01:14:15,977 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-02-24 01:14:15,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-02-24 01:14:15,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-24 01:14:15,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-02-24 01:14:15,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2022-02-24 01:14:15,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-02-24 01:14:15,977 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN
[2022-02-24 01:14:15,977 INFO L138 SettingsManager]: * Use separate solver for trace checks=false
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-02-24 01:14:16,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-02-24 01:14:16,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-02-24 01:14:16,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-02-24 01:14:16,168 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-02-24 01:14:16,170 INFO L275 PluginConnector]: CDTParser initialized
[2022-02-24 01:14:16,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_2-2-simple.i
[2022-02-24 01:14:16,217 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12d8f4071/dbc19d1c6d8649299499a2c9a5165eaa/FLAGae6dbfe3d
[2022-02-24 01:14:16,574 INFO L306 CDTParser]: Found 1 translation units.
[2022-02-24 01:14:16,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_2-2-simple.i
[2022-02-24 01:14:16,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12d8f4071/dbc19d1c6d8649299499a2c9a5165eaa/FLAGae6dbfe3d
[2022-02-24 01:14:16,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12d8f4071/dbc19d1c6d8649299499a2c9a5165eaa
[2022-02-24 01:14:16,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-02-24 01:14:16,599 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2022-02-24 01:14:16,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-02-24 01:14:16,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-02-24 01:14:16,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-02-24 01:14:16,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 01:14:16" (1/1) ...
[2022-02-24 01:14:16,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@649bd4f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:14:16, skipping insertion in model container
[2022-02-24 01:14:16,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 01:14:16" (1/1) ...
[2022-02-24 01:14:16,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-02-24 01:14:16,624 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-02-24 01:14:16,801 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_2-2-simple.i[809,822]
[2022-02-24 01:14:16,820 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-02-24 01:14:16,828 INFO L203 MainTranslator]: Completed pre-run
[2022-02-24 01:14:16,839 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_2-2-simple.i[809,822]
[2022-02-24 01:14:16,847 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-02-24 01:14:16,859 INFO L208 MainTranslator]: Completed translation
[2022-02-24 01:14:16,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:14:16 WrapperNode
[2022-02-24 01:14:16,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-02-24 01:14:16,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-02-24 01:14:16,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-02-24 01:14:16,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-02-24 01:14:16,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:14:16" (1/1) ...
[2022-02-24 01:14:16,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:14:16" (1/1) ...
[2022-02-24 01:14:16,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:14:16" (1/1) ...
[2022-02-24 01:14:16,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:14:16" (1/1) ...
[2022-02-24 01:14:16,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:14:16" (1/1) ...
[2022-02-24 01:14:16,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:14:16" (1/1) ...
[2022-02-24 01:14:16,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:14:16" (1/1) ...
[2022-02-24 01:14:16,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-02-24 01:14:16,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-02-24 01:14:16,897 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-02-24 01:14:16,897 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-02-24 01:14:16,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:14:16" (1/1) ...
[2022-02-24 01:14:16,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-24 01:14:16,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-24 01:14:16,936 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)
[2022-02-24 01:14:16,942 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
[2022-02-24 01:14:16,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-02-24 01:14:16,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-02-24 01:14:16,968 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-02-24 01:14:16,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-02-24 01:14:16,969 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-02-24 01:14:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-02-24 01:14:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-02-24 01:14:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2022-02-24 01:14:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure __assert
[2022-02-24 01:14:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-02-24 01:14:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-02-24 01:14:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-02-24 01:14:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-02-24 01:14:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-02-24 01:14:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int
[2022-02-24 01:14:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-02-24 01:14:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-02-24 01:14:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-02-24 01:14:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-02-24 01:14:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-02-24 01:14:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-02-24 01:14:17,030 INFO L234 CfgBuilder]: Building ICFG
[2022-02-24 01:14:17,032 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-02-24 01:14:17,099 INFO L275 CfgBuilder]: Performing block encoding
[2022-02-24 01:14:17,103 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-02-24 01:14:17,103 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2022-02-24 01:14:17,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 01:14:17 BoogieIcfgContainer
[2022-02-24 01:14:17,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-02-24 01:14:17,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-02-24 01:14:17,105 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-02-24 01:14:17,108 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-02-24 01:14:17,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 01:14:16" (1/3) ...
[2022-02-24 01:14:17,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec0a66b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 01:14:17, skipping insertion in model container
[2022-02-24 01:14:17,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:14:16" (2/3) ...
[2022-02-24 01:14:17,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec0a66b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 01:14:17, skipping insertion in model container
[2022-02-24 01:14:17,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 01:14:17" (3/3) ...
[2022-02-24 01:14:17,110 INFO L111 eAbstractionObserver]: Analyzing ICFG array_2-2-simple.i
[2022-02-24 01:14:17,114 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2022-02-24 01:14:17,115 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-02-24 01:14:17,160 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-02-24 01:14:17,165 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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=JORDAN
[2022-02-24 01:14:17,165 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-02-24 01:14:17,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-02-24 01:14:17,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-02-24 01:14:17,184 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:17,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:17,184 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:17,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:17,190 INFO L85 PathProgramCache]: Analyzing trace with hash -445681932, now seen corresponding path program 1 times
[2022-02-24 01:14:17,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:17,197 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613047597]
[2022-02-24 01:14:17,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:17,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:17,256 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-02-24 01:14:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:17,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:17,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:17,412 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:17,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613047597]
[2022-02-24 01:14:17,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [613047597] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:17,414 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:17,414 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-02-24 01:14:17,415 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321321798]
[2022-02-24 01:14:17,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:17,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-02-24 01:14:17,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:17,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-02-24 01:14:17,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-24 01:14:17,456 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:17,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:17,504 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions.
[2022-02-24 01:14:17,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-02-24 01:14:17,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12
[2022-02-24 01:14:17,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:17,519 INFO L225 Difference]: With dead ends: 34
[2022-02-24 01:14:17,520 INFO L226 Difference]: Without dead ends: 14
[2022-02-24 01:14:17,523 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
[2022-02-24 01:14:17,530 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:17,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 23 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 01:14:17,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2022-02-24 01:14:17,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14.
[2022-02-24 01:14:17,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:17,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions.
[2022-02-24 01:14:17,569 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12
[2022-02-24 01:14:17,570 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:17,570 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions.
[2022-02-24 01:14:17,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:17,570 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions.
[2022-02-24 01:14:17,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-02-24 01:14:17,571 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:17,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:17,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-02-24 01:14:17,571 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:17,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:17,573 INFO L85 PathProgramCache]: Analyzing trace with hash -617456838, now seen corresponding path program 1 times
[2022-02-24 01:14:17,573 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:17,573 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715428693]
[2022-02-24 01:14:17,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:17,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:17,580 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-02-24 01:14:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:17,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:17,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:17,661 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:17,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715428693]
[2022-02-24 01:14:17,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [715428693] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:17,662 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:17,662 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-02-24 01:14:17,662 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084638269]
[2022-02-24 01:14:17,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:17,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-02-24 01:14:17,663 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:17,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-02-24 01:14:17,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-02-24 01:14:17,664 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:17,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:17,698 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions.
[2022-02-24 01:14:17,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-02-24 01:14:17,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12
[2022-02-24 01:14:17,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:17,699 INFO L225 Difference]: With dead ends: 22
[2022-02-24 01:14:17,699 INFO L226 Difference]: Without dead ends: 16
[2022-02-24 01:14:17,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-02-24 01:14:17,701 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:17,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 19 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 01:14:17,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2022-02-24 01:14:17,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15.
[2022-02-24 01:14:17,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:17,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions.
[2022-02-24 01:14:17,705 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12
[2022-02-24 01:14:17,705 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:17,705 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions.
[2022-02-24 01:14:17,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:17,705 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions.
[2022-02-24 01:14:17,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-02-24 01:14:17,706 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:17,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:17,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-02-24 01:14:17,706 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:17,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:17,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1544621860, now seen corresponding path program 1 times
[2022-02-24 01:14:17,707 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:17,707 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168203719]
[2022-02-24 01:14:17,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:17,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:17,723 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:17,723 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:17,724 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:17,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:17,781 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:17,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168203719]
[2022-02-24 01:14:17,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [168203719] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:17,781 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:17,782 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-02-24 01:14:17,782 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318523733]
[2022-02-24 01:14:17,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:17,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-02-24 01:14:17,782 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:17,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-02-24 01:14:17,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-02-24 01:14:17,786 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:17,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:17,844 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions.
[2022-02-24 01:14:17,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-02-24 01:14:17,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14
[2022-02-24 01:14:17,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:17,845 INFO L225 Difference]: With dead ends: 24
[2022-02-24 01:14:17,846 INFO L226 Difference]: Without dead ends: 18
[2022-02-24 01:14:17,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-02-24 01:14:17,847 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:17,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 24 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 01:14:17,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2022-02-24 01:14:17,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17.
[2022-02-24 01:14:17,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:17,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions.
[2022-02-24 01:14:17,851 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14
[2022-02-24 01:14:17,852 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:17,852 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions.
[2022-02-24 01:14:17,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:17,852 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions.
[2022-02-24 01:14:17,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2022-02-24 01:14:17,852 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:17,853 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:17,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-02-24 01:14:17,853 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:17,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:17,853 INFO L85 PathProgramCache]: Analyzing trace with hash 802989566, now seen corresponding path program 2 times
[2022-02-24 01:14:17,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:17,854 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366102112]
[2022-02-24 01:14:17,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:17,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:17,857 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:17,857 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:17,857 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:17,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:17,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:17,934 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:17,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366102112]
[2022-02-24 01:14:17,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1366102112] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:17,935 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:17,935 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-02-24 01:14:17,935 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441537380]
[2022-02-24 01:14:17,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:17,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-02-24 01:14:17,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:17,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-02-24 01:14:17,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2022-02-24 01:14:17,936 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:17,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:17,983 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions.
[2022-02-24 01:14:17,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-02-24 01:14:17,983 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16
[2022-02-24 01:14:17,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:17,984 INFO L225 Difference]: With dead ends: 26
[2022-02-24 01:14:17,984 INFO L226 Difference]: Without dead ends: 20
[2022-02-24 01:14:17,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72
[2022-02-24 01:14:17,985 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:17,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 19 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 01:14:17,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2022-02-24 01:14:17,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19.
[2022-02-24 01:14:17,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:17,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions.
[2022-02-24 01:14:17,990 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16
[2022-02-24 01:14:17,991 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:17,991 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions.
[2022-02-24 01:14:17,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:17,991 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions.
[2022-02-24 01:14:17,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2022-02-24 01:14:17,992 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:17,992 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:17,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-02-24 01:14:17,992 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:17,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:17,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1999739552, now seen corresponding path program 3 times
[2022-02-24 01:14:17,993 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:17,993 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372865510]
[2022-02-24 01:14:17,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:17,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:17,997 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:17,997 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:17,997 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:18,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:18,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:18,050 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:18,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372865510]
[2022-02-24 01:14:18,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1372865510] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:18,051 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:18,051 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-02-24 01:14:18,051 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966083821]
[2022-02-24 01:14:18,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:18,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-02-24 01:14:18,052 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:18,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-02-24 01:14:18,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-02-24 01:14:18,052 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:18,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:18,110 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions.
[2022-02-24 01:14:18,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-02-24 01:14:18,110 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18
[2022-02-24 01:14:18,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:18,111 INFO L225 Difference]: With dead ends: 28
[2022-02-24 01:14:18,111 INFO L226 Difference]: Without dead ends: 22
[2022-02-24 01:14:18,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110
[2022-02-24 01:14:18,113 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:18,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 24 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 01:14:18,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2022-02-24 01:14:18,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21.
[2022-02-24 01:14:18,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:18,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions.
[2022-02-24 01:14:18,118 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18
[2022-02-24 01:14:18,118 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:18,118 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions.
[2022-02-24 01:14:18,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:18,118 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions.
[2022-02-24 01:14:18,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2022-02-24 01:14:18,119 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:18,119 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:18,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-02-24 01:14:18,119 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:18,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:18,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1025240770, now seen corresponding path program 4 times
[2022-02-24 01:14:18,120 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:18,120 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310572323]
[2022-02-24 01:14:18,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:18,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:18,124 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:18,124 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:18,124 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:18,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:18,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:18,186 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:18,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310572323]
[2022-02-24 01:14:18,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1310572323] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:18,187 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:18,187 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2022-02-24 01:14:18,187 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171717689]
[2022-02-24 01:14:18,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:18,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-02-24 01:14:18,188 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:18,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-02-24 01:14:18,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2022-02-24 01:14:18,188 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:18,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:18,254 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions.
[2022-02-24 01:14:18,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2022-02-24 01:14:18,254 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20
[2022-02-24 01:14:18,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:18,255 INFO L225 Difference]: With dead ends: 30
[2022-02-24 01:14:18,255 INFO L226 Difference]: Without dead ends: 24
[2022-02-24 01:14:18,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156
[2022-02-24 01:14:18,256 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:18,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 24 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 01:14:18,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2022-02-24 01:14:18,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23.
[2022-02-24 01:14:18,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:18,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions.
[2022-02-24 01:14:18,261 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20
[2022-02-24 01:14:18,261 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:18,261 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions.
[2022-02-24 01:14:18,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:18,262 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions.
[2022-02-24 01:14:18,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2022-02-24 01:14:18,262 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:18,262 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:18,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-02-24 01:14:18,262 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:18,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:18,263 INFO L85 PathProgramCache]: Analyzing trace with hash 834781796, now seen corresponding path program 5 times
[2022-02-24 01:14:18,263 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:18,263 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076891410]
[2022-02-24 01:14:18,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:18,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:18,266 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:18,266 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:18,267 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:18,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:18,353 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:18,353 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076891410]
[2022-02-24 01:14:18,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2076891410] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:18,353 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:18,354 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2022-02-24 01:14:18,354 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861069146]
[2022-02-24 01:14:18,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:18,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-02-24 01:14:18,354 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:18,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-02-24 01:14:18,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72
[2022-02-24 01:14:18,355 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:18,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:18,440 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions.
[2022-02-24 01:14:18,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2022-02-24 01:14:18,441 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22
[2022-02-24 01:14:18,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:18,442 INFO L225 Difference]: With dead ends: 32
[2022-02-24 01:14:18,442 INFO L226 Difference]: Without dead ends: 26
[2022-02-24 01:14:18,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210
[2022-02-24 01:14:18,443 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:18,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 39 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 01:14:18,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2022-02-24 01:14:18,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25.
[2022-02-24 01:14:18,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:18,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions.
[2022-02-24 01:14:18,451 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22
[2022-02-24 01:14:18,451 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:18,451 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions.
[2022-02-24 01:14:18,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:18,452 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions.
[2022-02-24 01:14:18,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-24 01:14:18,452 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:18,452 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:18,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-02-24 01:14:18,453 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:18,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:18,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1807665786, now seen corresponding path program 6 times
[2022-02-24 01:14:18,453 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:18,453 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174713727]
[2022-02-24 01:14:18,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:18,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:18,461 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:18,461 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:18,461 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:18,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:18,570 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:18,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174713727]
[2022-02-24 01:14:18,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1174713727] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:18,571 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:18,571 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2022-02-24 01:14:18,571 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457696958]
[2022-02-24 01:14:18,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:18,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-02-24 01:14:18,571 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:18,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-02-24 01:14:18,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90
[2022-02-24 01:14:18,573 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:18,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:18,669 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions.
[2022-02-24 01:14:18,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2022-02-24 01:14:18,670 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24
[2022-02-24 01:14:18,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:18,671 INFO L225 Difference]: With dead ends: 34
[2022-02-24 01:14:18,671 INFO L226 Difference]: Without dead ends: 28
[2022-02-24 01:14:18,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272
[2022-02-24 01:14:18,671 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 22 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:18,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 34 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 01:14:18,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2022-02-24 01:14:18,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27.
[2022-02-24 01:14:18,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions.
[2022-02-24 01:14:18,682 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24
[2022-02-24 01:14:18,682 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:18,682 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions.
[2022-02-24 01:14:18,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions.
[2022-02-24 01:14:18,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-24 01:14:18,683 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:18,683 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:18,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-02-24 01:14:18,685 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:18,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:18,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1420847144, now seen corresponding path program 7 times
[2022-02-24 01:14:18,685 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:18,686 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962152728]
[2022-02-24 01:14:18,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:18,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:18,691 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:18,691 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:18,691 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:18,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:18,786 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:18,786 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962152728]
[2022-02-24 01:14:18,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [962152728] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:18,786 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:18,786 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2022-02-24 01:14:18,786 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468794727]
[2022-02-24 01:14:18,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:18,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-02-24 01:14:18,787 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:18,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-02-24 01:14:18,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110
[2022-02-24 01:14:18,788 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:18,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:18,891 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions.
[2022-02-24 01:14:18,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2022-02-24 01:14:18,891 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26
[2022-02-24 01:14:18,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:18,893 INFO L225 Difference]: With dead ends: 36
[2022-02-24 01:14:18,893 INFO L226 Difference]: Without dead ends: 30
[2022-02-24 01:14:18,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342
[2022-02-24 01:14:18,895 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:18,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 29 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 01:14:18,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2022-02-24 01:14:18,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29.
[2022-02-24 01:14:18,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:18,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions.
[2022-02-24 01:14:18,901 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26
[2022-02-24 01:14:18,902 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:18,902 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions.
[2022-02-24 01:14:18,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:18,902 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions.
[2022-02-24 01:14:18,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2022-02-24 01:14:18,903 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:18,903 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:18,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-02-24 01:14:18,903 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:18,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:18,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1239582134, now seen corresponding path program 8 times
[2022-02-24 01:14:18,903 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:18,903 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943507106]
[2022-02-24 01:14:18,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:18,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:18,914 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:18,914 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:18,914 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:19,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:19,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:19,006 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:19,006 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943507106]
[2022-02-24 01:14:19,006 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1943507106] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:19,006 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:19,006 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2022-02-24 01:14:19,006 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649555227]
[2022-02-24 01:14:19,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:19,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-02-24 01:14:19,006 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:19,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-02-24 01:14:19,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132
[2022-02-24 01:14:19,007 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:19,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:19,128 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions.
[2022-02-24 01:14:19,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2022-02-24 01:14:19,128 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28
[2022-02-24 01:14:19,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:19,129 INFO L225 Difference]: With dead ends: 38
[2022-02-24 01:14:19,129 INFO L226 Difference]: Without dead ends: 32
[2022-02-24 01:14:19,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420
[2022-02-24 01:14:19,130 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 26 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:19,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 24 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 01:14:19,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2022-02-24 01:14:19,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31.
[2022-02-24 01:14:19,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:19,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions.
[2022-02-24 01:14:19,134 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28
[2022-02-24 01:14:19,134 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:19,134 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions.
[2022-02-24 01:14:19,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:19,134 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions.
[2022-02-24 01:14:19,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2022-02-24 01:14:19,135 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:19,135 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:19,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-02-24 01:14:19,135 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:19,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:19,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1888390124, now seen corresponding path program 9 times
[2022-02-24 01:14:19,135 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:19,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950772034]
[2022-02-24 01:14:19,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:19,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:19,138 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:19,138 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:19,138 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:19,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:19,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:19,224 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:19,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950772034]
[2022-02-24 01:14:19,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1950772034] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:19,225 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:19,225 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2022-02-24 01:14:19,225 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322380402]
[2022-02-24 01:14:19,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:19,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2022-02-24 01:14:19,226 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:19,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2022-02-24 01:14:19,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156
[2022-02-24 01:14:19,226 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:19,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:19,340 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions.
[2022-02-24 01:14:19,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2022-02-24 01:14:19,340 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30
[2022-02-24 01:14:19,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:19,341 INFO L225 Difference]: With dead ends: 40
[2022-02-24 01:14:19,341 INFO L226 Difference]: Without dead ends: 34
[2022-02-24 01:14:19,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506
[2022-02-24 01:14:19,342 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:19,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 24 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 01:14:19,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2022-02-24 01:14:19,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33.
[2022-02-24 01:14:19,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:19,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions.
[2022-02-24 01:14:19,355 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30
[2022-02-24 01:14:19,355 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:19,355 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions.
[2022-02-24 01:14:19,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:19,355 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions.
[2022-02-24 01:14:19,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2022-02-24 01:14:19,360 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:19,360 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:19,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2022-02-24 01:14:19,361 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:19,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:19,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1392622862, now seen corresponding path program 10 times
[2022-02-24 01:14:19,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:19,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077129506]
[2022-02-24 01:14:19,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:19,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:19,366 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:19,367 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:19,367 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:19,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:19,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:19,492 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:19,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077129506]
[2022-02-24 01:14:19,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1077129506] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:19,492 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:19,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2022-02-24 01:14:19,492 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234685164]
[2022-02-24 01:14:19,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:19,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2022-02-24 01:14:19,493 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:19,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2022-02-24 01:14:19,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182
[2022-02-24 01:14:19,494 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:19,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:19,641 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions.
[2022-02-24 01:14:19,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2022-02-24 01:14:19,641 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32
[2022-02-24 01:14:19,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:19,642 INFO L225 Difference]: With dead ends: 42
[2022-02-24 01:14:19,642 INFO L226 Difference]: Without dead ends: 36
[2022-02-24 01:14:19,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600
[2022-02-24 01:14:19,643 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 30 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:19,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 24 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 01:14:19,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2022-02-24 01:14:19,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35.
[2022-02-24 01:14:19,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:19,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions.
[2022-02-24 01:14:19,647 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32
[2022-02-24 01:14:19,647 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:19,647 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions.
[2022-02-24 01:14:19,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:19,648 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions.
[2022-02-24 01:14:19,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2022-02-24 01:14:19,648 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:19,648 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:19,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2022-02-24 01:14:19,648 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:19,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:19,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1701653936, now seen corresponding path program 11 times
[2022-02-24 01:14:19,649 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:19,649 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515777184]
[2022-02-24 01:14:19,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:19,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:19,651 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:19,652 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:19,652 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:19,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:19,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:19,748 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:19,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515777184]
[2022-02-24 01:14:19,749 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [515777184] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:19,749 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:19,749 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2022-02-24 01:14:19,749 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438698831]
[2022-02-24 01:14:19,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:19,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-02-24 01:14:19,749 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:19,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-02-24 01:14:19,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210
[2022-02-24 01:14:19,750 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:19,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:19,894 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions.
[2022-02-24 01:14:19,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2022-02-24 01:14:19,895 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34
[2022-02-24 01:14:19,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:19,895 INFO L225 Difference]: With dead ends: 44
[2022-02-24 01:14:19,895 INFO L226 Difference]: Without dead ends: 38
[2022-02-24 01:14:19,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702
[2022-02-24 01:14:19,896 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 32 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:19,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 34 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 01:14:19,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2022-02-24 01:14:19,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37.
[2022-02-24 01:14:19,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:19,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions.
[2022-02-24 01:14:19,901 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34
[2022-02-24 01:14:19,901 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:19,901 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions.
[2022-02-24 01:14:19,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:19,901 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions.
[2022-02-24 01:14:19,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-02-24 01:14:19,901 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:19,901 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:19,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2022-02-24 01:14:19,902 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:19,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:19,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1967194670, now seen corresponding path program 12 times
[2022-02-24 01:14:19,902 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:19,902 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099631071]
[2022-02-24 01:14:19,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:19,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:19,905 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:19,905 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:19,905 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:20,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:20,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:20,008 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:20,009 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099631071]
[2022-02-24 01:14:20,009 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2099631071] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:20,009 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:20,009 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2022-02-24 01:14:20,009 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449608817]
[2022-02-24 01:14:20,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:20,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-02-24 01:14:20,009 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:20,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-02-24 01:14:20,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240
[2022-02-24 01:14:20,010 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:20,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:20,156 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions.
[2022-02-24 01:14:20,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2022-02-24 01:14:20,156 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36
[2022-02-24 01:14:20,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:20,156 INFO L225 Difference]: With dead ends: 46
[2022-02-24 01:14:20,156 INFO L226 Difference]: Without dead ends: 40
[2022-02-24 01:14:20,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812
[2022-02-24 01:14:20,157 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 34 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:20,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 44 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 01:14:20,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2022-02-24 01:14:20,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39.
[2022-02-24 01:14:20,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:20,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions.
[2022-02-24 01:14:20,162 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36
[2022-02-24 01:14:20,162 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:20,162 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions.
[2022-02-24 01:14:20,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:20,162 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions.
[2022-02-24 01:14:20,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2022-02-24 01:14:20,162 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:20,162 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:20,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2022-02-24 01:14:20,163 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:20,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:20,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1562555020, now seen corresponding path program 13 times
[2022-02-24 01:14:20,163 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:20,163 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500141611]
[2022-02-24 01:14:20,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:20,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:20,165 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:20,166 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:20,166 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:20,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:20,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:20,277 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:20,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500141611]
[2022-02-24 01:14:20,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1500141611] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:20,277 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:20,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17
[2022-02-24 01:14:20,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506076413]
[2022-02-24 01:14:20,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:20,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2022-02-24 01:14:20,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:20,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2022-02-24 01:14:20,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272
[2022-02-24 01:14:20,279 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:20,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:20,438 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions.
[2022-02-24 01:14:20,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2022-02-24 01:14:20,438 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38
[2022-02-24 01:14:20,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:20,439 INFO L225 Difference]: With dead ends: 48
[2022-02-24 01:14:20,439 INFO L226 Difference]: Without dead ends: 42
[2022-02-24 01:14:20,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930
[2022-02-24 01:14:20,440 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:20,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 29 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 01:14:20,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2022-02-24 01:14:20,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41.
[2022-02-24 01:14:20,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:20,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions.
[2022-02-24 01:14:20,447 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38
[2022-02-24 01:14:20,448 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:20,448 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions.
[2022-02-24 01:14:20,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:20,448 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions.
[2022-02-24 01:14:20,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2022-02-24 01:14:20,448 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:20,448 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:20,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2022-02-24 01:14:20,449 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:20,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:20,449 INFO L85 PathProgramCache]: Analyzing trace with hash 749091990, now seen corresponding path program 14 times
[2022-02-24 01:14:20,449 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:20,449 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630919137]
[2022-02-24 01:14:20,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:20,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:20,452 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:20,453 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:20,453 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:20,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:20,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:20,632 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:20,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630919137]
[2022-02-24 01:14:20,633 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1630919137] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:20,633 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:20,633 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18
[2022-02-24 01:14:20,633 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644361844]
[2022-02-24 01:14:20,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:20,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2022-02-24 01:14:20,633 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:20,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2022-02-24 01:14:20,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306
[2022-02-24 01:14:20,634 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:20,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:20,824 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions.
[2022-02-24 01:14:20,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2022-02-24 01:14:20,824 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40
[2022-02-24 01:14:20,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:20,826 INFO L225 Difference]: With dead ends: 50
[2022-02-24 01:14:20,826 INFO L226 Difference]: Without dead ends: 44
[2022-02-24 01:14:20,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056
[2022-02-24 01:14:20,827 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 38 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:20,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 39 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 01:14:20,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2022-02-24 01:14:20,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43.
[2022-02-24 01:14:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 38 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:20,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions.
[2022-02-24 01:14:20,835 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40
[2022-02-24 01:14:20,836 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:20,836 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions.
[2022-02-24 01:14:20,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:20,836 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions.
[2022-02-24 01:14:20,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2022-02-24 01:14:20,837 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:20,837 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:20,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2022-02-24 01:14:20,837 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:20,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:20,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1743776568, now seen corresponding path program 15 times
[2022-02-24 01:14:20,837 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:20,838 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248384764]
[2022-02-24 01:14:20,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:20,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:20,841 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:20,841 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:20,841 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:21,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:21,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:21,036 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:21,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248384764]
[2022-02-24 01:14:21,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1248384764] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:21,037 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:21,037 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19
[2022-02-24 01:14:21,037 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850712191]
[2022-02-24 01:14:21,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:21,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2022-02-24 01:14:21,037 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:21,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2022-02-24 01:14:21,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342
[2022-02-24 01:14:21,038 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:21,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:21,279 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions.
[2022-02-24 01:14:21,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2022-02-24 01:14:21,288 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42
[2022-02-24 01:14:21,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:21,288 INFO L225 Difference]: With dead ends: 52
[2022-02-24 01:14:21,288 INFO L226 Difference]: Without dead ends: 46
[2022-02-24 01:14:21,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190
[2022-02-24 01:14:21,289 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:21,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 49 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:21,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2022-02-24 01:14:21,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45.
[2022-02-24 01:14:21,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:21,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions.
[2022-02-24 01:14:21,294 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42
[2022-02-24 01:14:21,294 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:21,294 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions.
[2022-02-24 01:14:21,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:21,295 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions.
[2022-02-24 01:14:21,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2022-02-24 01:14:21,295 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:21,295 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:21,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2022-02-24 01:14:21,295 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:21,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:21,296 INFO L85 PathProgramCache]: Analyzing trace with hash -142050982, now seen corresponding path program 16 times
[2022-02-24 01:14:21,296 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:21,296 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77105844]
[2022-02-24 01:14:21,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:21,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:21,312 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:21,313 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:21,313 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:21,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:21,529 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:21,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77105844]
[2022-02-24 01:14:21,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [77105844] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:21,529 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:21,529 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20
[2022-02-24 01:14:21,529 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599807135]
[2022-02-24 01:14:21,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:21,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2022-02-24 01:14:21,530 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:21,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2022-02-24 01:14:21,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380
[2022-02-24 01:14:21,530 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:21,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:21,736 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions.
[2022-02-24 01:14:21,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2022-02-24 01:14:21,736 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44
[2022-02-24 01:14:21,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:21,737 INFO L225 Difference]: With dead ends: 54
[2022-02-24 01:14:21,737 INFO L226 Difference]: Without dead ends: 48
[2022-02-24 01:14:21,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332
[2022-02-24 01:14:21,738 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 42 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:21,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 24 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 01:14:21,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2022-02-24 01:14:21,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47.
[2022-02-24 01:14:21,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 42 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:21,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions.
[2022-02-24 01:14:21,746 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44
[2022-02-24 01:14:21,746 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:21,746 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions.
[2022-02-24 01:14:21,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:21,746 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions.
[2022-02-24 01:14:21,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2022-02-24 01:14:21,746 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:21,746 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:21,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2022-02-24 01:14:21,746 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:21,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:21,747 INFO L85 PathProgramCache]: Analyzing trace with hash 53872380, now seen corresponding path program 17 times
[2022-02-24 01:14:21,747 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:21,747 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165545429]
[2022-02-24 01:14:21,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:21,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:21,749 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:21,749 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:21,749 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:21,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:21,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:21,916 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:21,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165545429]
[2022-02-24 01:14:21,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [165545429] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:21,916 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:21,916 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21
[2022-02-24 01:14:21,916 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822954850]
[2022-02-24 01:14:21,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:21,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2022-02-24 01:14:21,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:21,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2022-02-24 01:14:21,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420
[2022-02-24 01:14:21,917 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:22,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:22,149 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions.
[2022-02-24 01:14:22,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2022-02-24 01:14:22,150 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46
[2022-02-24 01:14:22,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:22,150 INFO L225 Difference]: With dead ends: 56
[2022-02-24 01:14:22,150 INFO L226 Difference]: Without dead ends: 50
[2022-02-24 01:14:22,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482
[2022-02-24 01:14:22,151 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 44 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:22,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 29 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:22,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2022-02-24 01:14:22,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49.
[2022-02-24 01:14:22,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 44 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:22,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions.
[2022-02-24 01:14:22,157 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46
[2022-02-24 01:14:22,157 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:22,157 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions.
[2022-02-24 01:14:22,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:22,157 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions.
[2022-02-24 01:14:22,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2022-02-24 01:14:22,157 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:22,157 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:22,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2022-02-24 01:14:22,158 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:22,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:22,158 INFO L85 PathProgramCache]: Analyzing trace with hash -642337762, now seen corresponding path program 18 times
[2022-02-24 01:14:22,158 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:22,158 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837884083]
[2022-02-24 01:14:22,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:22,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:22,161 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:22,161 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:22,161 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:22,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:22,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:22,329 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:22,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837884083]
[2022-02-24 01:14:22,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1837884083] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:22,329 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:22,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22
[2022-02-24 01:14:22,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218368592]
[2022-02-24 01:14:22,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:22,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2022-02-24 01:14:22,329 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:22,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2022-02-24 01:14:22,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462
[2022-02-24 01:14:22,330 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 22 states, 22 states have (on average 2.0) internal successors, (44), 21 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:22,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:22,571 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions.
[2022-02-24 01:14:22,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2022-02-24 01:14:22,571 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 21 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48
[2022-02-24 01:14:22,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:22,571 INFO L225 Difference]: With dead ends: 58
[2022-02-24 01:14:22,572 INFO L226 Difference]: Without dead ends: 52
[2022-02-24 01:14:22,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640
[2022-02-24 01:14:22,572 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 46 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:22,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 29 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 01:14:22,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2022-02-24 01:14:22,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51.
[2022-02-24 01:14:22,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 46 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:22,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions.
[2022-02-24 01:14:22,578 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48
[2022-02-24 01:14:22,578 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:22,578 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions.
[2022-02-24 01:14:22,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 21 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:22,578 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions.
[2022-02-24 01:14:22,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2022-02-24 01:14:22,578 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:22,578 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:22,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2022-02-24 01:14:22,578 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:22,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:22,579 INFO L85 PathProgramCache]: Analyzing trace with hash 314613952, now seen corresponding path program 19 times
[2022-02-24 01:14:22,579 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:22,579 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443404245]
[2022-02-24 01:14:22,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:22,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:22,581 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:22,581 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:22,581 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:22,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:22,761 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:22,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443404245]
[2022-02-24 01:14:22,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1443404245] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:22,761 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:22,761 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23
[2022-02-24 01:14:22,761 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196774933]
[2022-02-24 01:14:22,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:22,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2022-02-24 01:14:22,762 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:22,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2022-02-24 01:14:22,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506
[2022-02-24 01:14:22,762 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 23 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:23,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:23,014 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions.
[2022-02-24 01:14:23,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2022-02-24 01:14:23,014 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50
[2022-02-24 01:14:23,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:23,015 INFO L225 Difference]: With dead ends: 60
[2022-02-24 01:14:23,015 INFO L226 Difference]: Without dead ends: 54
[2022-02-24 01:14:23,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806
[2022-02-24 01:14:23,016 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 48 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:23,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 29 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 01:14:23,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2022-02-24 01:14:23,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53.
[2022-02-24 01:14:23,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 48 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:23,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions.
[2022-02-24 01:14:23,022 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50
[2022-02-24 01:14:23,022 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:23,022 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions.
[2022-02-24 01:14:23,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:23,022 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions.
[2022-02-24 01:14:23,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2022-02-24 01:14:23,022 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:23,022 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:23,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20
[2022-02-24 01:14:23,022 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:23,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:23,023 INFO L85 PathProgramCache]: Analyzing trace with hash 822209762, now seen corresponding path program 20 times
[2022-02-24 01:14:23,023 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:23,023 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819077653]
[2022-02-24 01:14:23,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:23,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:23,026 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:23,026 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:23,026 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:23,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:23,256 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:23,256 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819077653]
[2022-02-24 01:14:23,256 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [819077653] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:23,256 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:23,256 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24
[2022-02-24 01:14:23,256 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851122254]
[2022-02-24 01:14:23,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:23,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-02-24 01:14:23,257 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:23,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-02-24 01:14:23,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552
[2022-02-24 01:14:23,258 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand has 24 states, 24 states have (on average 2.0) internal successors, (48), 23 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:23,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:23,542 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions.
[2022-02-24 01:14:23,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2022-02-24 01:14:23,542 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0) internal successors, (48), 23 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52
[2022-02-24 01:14:23,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:23,543 INFO L225 Difference]: With dead ends: 62
[2022-02-24 01:14:23,543 INFO L226 Difference]: Without dead ends: 56
[2022-02-24 01:14:23,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980
[2022-02-24 01:14:23,544 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 50 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:23,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 44 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:23,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2022-02-24 01:14:23,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55.
[2022-02-24 01:14:23,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:23,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions.
[2022-02-24 01:14:23,549 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52
[2022-02-24 01:14:23,549 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:23,550 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions.
[2022-02-24 01:14:23,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0) internal successors, (48), 23 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:23,550 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions.
[2022-02-24 01:14:23,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2022-02-24 01:14:23,550 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:23,550 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:23,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21
[2022-02-24 01:14:23,550 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:23,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:23,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1004488572, now seen corresponding path program 21 times
[2022-02-24 01:14:23,551 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:23,551 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074406671]
[2022-02-24 01:14:23,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:23,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:23,553 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:23,553 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:23,553 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:23,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:23,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:23,788 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:23,788 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074406671]
[2022-02-24 01:14:23,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1074406671] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:23,788 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:23,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25
[2022-02-24 01:14:23,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480630617]
[2022-02-24 01:14:23,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:23,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2022-02-24 01:14:23,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:23,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2022-02-24 01:14:23,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600
[2022-02-24 01:14:23,789 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand has 25 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:24,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:24,093 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions.
[2022-02-24 01:14:24,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2022-02-24 01:14:24,093 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54
[2022-02-24 01:14:24,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:24,094 INFO L225 Difference]: With dead ends: 64
[2022-02-24 01:14:24,094 INFO L226 Difference]: Without dead ends: 58
[2022-02-24 01:14:24,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162
[2022-02-24 01:14:24,095 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 52 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:24,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 29 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:24,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2022-02-24 01:14:24,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57.
[2022-02-24 01:14:24,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 52 states have internal predecessors, (53), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:24,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions.
[2022-02-24 01:14:24,104 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54
[2022-02-24 01:14:24,105 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:24,105 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions.
[2022-02-24 01:14:24,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:24,105 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions.
[2022-02-24 01:14:24,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2022-02-24 01:14:24,105 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:24,105 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:24,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22
[2022-02-24 01:14:24,106 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:24,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:24,106 INFO L85 PathProgramCache]: Analyzing trace with hash 180036518, now seen corresponding path program 22 times
[2022-02-24 01:14:24,106 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:24,106 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200121561]
[2022-02-24 01:14:24,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:24,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:24,110 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:24,110 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:24,110 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:24,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:24,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:24,385 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:24,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200121561]
[2022-02-24 01:14:24,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [200121561] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:24,385 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:24,385 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26
[2022-02-24 01:14:24,386 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787825151]
[2022-02-24 01:14:24,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:24,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-02-24 01:14:24,386 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:24,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-02-24 01:14:24,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650
[2022-02-24 01:14:24,387 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand has 26 states, 26 states have (on average 2.0) internal successors, (52), 25 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:24,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:24,724 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions.
[2022-02-24 01:14:24,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2022-02-24 01:14:24,724 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 25 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56
[2022-02-24 01:14:24,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:24,725 INFO L225 Difference]: With dead ends: 66
[2022-02-24 01:14:24,725 INFO L226 Difference]: Without dead ends: 60
[2022-02-24 01:14:24,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352
[2022-02-24 01:14:24,727 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 54 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:24,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 39 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:24,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2022-02-24 01:14:24,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59.
[2022-02-24 01:14:24,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 54 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:24,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions.
[2022-02-24 01:14:24,735 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56
[2022-02-24 01:14:24,735 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:24,735 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions.
[2022-02-24 01:14:24,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 25 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:24,735 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions.
[2022-02-24 01:14:24,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2022-02-24 01:14:24,738 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:24,739 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:24,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23
[2022-02-24 01:14:24,739 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:24,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:24,739 INFO L85 PathProgramCache]: Analyzing trace with hash 342314568, now seen corresponding path program 23 times
[2022-02-24 01:14:24,739 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:24,739 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097406829]
[2022-02-24 01:14:24,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:24,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:24,745 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:24,745 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:24,745 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:25,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:25,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:25,027 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:25,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097406829]
[2022-02-24 01:14:25,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1097406829] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:25,028 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:25,028 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27
[2022-02-24 01:14:25,028 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012271387]
[2022-02-24 01:14:25,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:25,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2022-02-24 01:14:25,028 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:25,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2022-02-24 01:14:25,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702
[2022-02-24 01:14:25,029 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 27 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:25,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:25,422 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions.
[2022-02-24 01:14:25,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2022-02-24 01:14:25,423 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58
[2022-02-24 01:14:25,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:25,423 INFO L225 Difference]: With dead ends: 68
[2022-02-24 01:14:25,423 INFO L226 Difference]: Without dead ends: 62
[2022-02-24 01:14:25,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550
[2022-02-24 01:14:25,425 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 56 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:25,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 44 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:25,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states.
[2022-02-24 01:14:25,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61.
[2022-02-24 01:14:25,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.0178571428571428) internal successors, (57), 56 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:25,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions.
[2022-02-24 01:14:25,435 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58
[2022-02-24 01:14:25,435 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:25,435 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions.
[2022-02-24 01:14:25,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:25,439 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions.
[2022-02-24 01:14:25,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2022-02-24 01:14:25,440 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:25,440 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:25,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24
[2022-02-24 01:14:25,440 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:25,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:25,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1672697962, now seen corresponding path program 24 times
[2022-02-24 01:14:25,440 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:25,440 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316612913]
[2022-02-24 01:14:25,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:25,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:25,444 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:25,444 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:25,445 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:25,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:25,719 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:25,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316612913]
[2022-02-24 01:14:25,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [316612913] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:25,719 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:25,719 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28
[2022-02-24 01:14:25,719 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085401167]
[2022-02-24 01:14:25,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:25,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-02-24 01:14:25,719 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:25,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-02-24 01:14:25,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756
[2022-02-24 01:14:25,720 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand has 28 states, 28 states have (on average 2.0) internal successors, (56), 27 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:26,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:26,097 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions.
[2022-02-24 01:14:26,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2022-02-24 01:14:26,098 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0) internal successors, (56), 27 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60
[2022-02-24 01:14:26,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:26,098 INFO L225 Difference]: With dead ends: 70
[2022-02-24 01:14:26,098 INFO L226 Difference]: Without dead ends: 64
[2022-02-24 01:14:26,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756
[2022-02-24 01:14:26,099 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 58 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:26,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 34 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:26,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states.
[2022-02-24 01:14:26,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63.
[2022-02-24 01:14:26,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0172413793103448) internal successors, (59), 58 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:26,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions.
[2022-02-24 01:14:26,105 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60
[2022-02-24 01:14:26,105 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:26,105 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions.
[2022-02-24 01:14:26,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0) internal successors, (56), 27 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:26,106 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions.
[2022-02-24 01:14:26,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63
[2022-02-24 01:14:26,106 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:26,106 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:26,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25
[2022-02-24 01:14:26,106 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:26,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:26,106 INFO L85 PathProgramCache]: Analyzing trace with hash 270885388, now seen corresponding path program 25 times
[2022-02-24 01:14:26,107 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:26,107 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607717414]
[2022-02-24 01:14:26,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:26,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:26,110 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:26,110 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:26,110 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:26,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:26,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:26,374 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:26,374 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607717414]
[2022-02-24 01:14:26,374 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1607717414] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:26,374 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:26,374 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29
[2022-02-24 01:14:26,374 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117574837]
[2022-02-24 01:14:26,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:26,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2022-02-24 01:14:26,374 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:26,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2022-02-24 01:14:26,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812
[2022-02-24 01:14:26,375 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand has 29 states, 29 states have (on average 2.0) internal successors, (58), 28 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:26,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:26,719 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions.
[2022-02-24 01:14:26,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2022-02-24 01:14:26,719 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.0) internal successors, (58), 28 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62
[2022-02-24 01:14:26,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:26,719 INFO L225 Difference]: With dead ends: 72
[2022-02-24 01:14:26,719 INFO L226 Difference]: Without dead ends: 66
[2022-02-24 01:14:26,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970
[2022-02-24 01:14:26,721 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 60 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:26,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 29 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:26,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2022-02-24 01:14:26,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65.
[2022-02-24 01:14:26,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.0166666666666666) internal successors, (61), 60 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:26,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions.
[2022-02-24 01:14:26,727 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62
[2022-02-24 01:14:26,727 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:26,727 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions.
[2022-02-24 01:14:26,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.0) internal successors, (58), 28 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:26,728 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions.
[2022-02-24 01:14:26,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2022-02-24 01:14:26,728 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:26,728 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:26,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26
[2022-02-24 01:14:26,728 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:26,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:26,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1748732718, now seen corresponding path program 26 times
[2022-02-24 01:14:26,729 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:26,729 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694938345]
[2022-02-24 01:14:26,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:26,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:26,731 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:26,731 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:26,732 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:27,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:27,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:27,046 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:27,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694938345]
[2022-02-24 01:14:27,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1694938345] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:27,046 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:27,046 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30
[2022-02-24 01:14:27,046 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774620263]
[2022-02-24 01:14:27,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:27,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states
[2022-02-24 01:14:27,046 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:27,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2022-02-24 01:14:27,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870
[2022-02-24 01:14:27,047 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand has 30 states, 30 states have (on average 2.0) internal successors, (60), 29 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:27,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:27,496 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions.
[2022-02-24 01:14:27,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2022-02-24 01:14:27,496 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 29 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64
[2022-02-24 01:14:27,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:27,496 INFO L225 Difference]: With dead ends: 74
[2022-02-24 01:14:27,497 INFO L226 Difference]: Without dead ends: 68
[2022-02-24 01:14:27,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192
[2022-02-24 01:14:27,498 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 62 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:27,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 29 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:27,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2022-02-24 01:14:27,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67.
[2022-02-24 01:14:27,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.0161290322580645) internal successors, (63), 62 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:27,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions.
[2022-02-24 01:14:27,508 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64
[2022-02-24 01:14:27,508 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:27,508 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions.
[2022-02-24 01:14:27,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 29 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:27,508 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions.
[2022-02-24 01:14:27,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2022-02-24 01:14:27,509 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:27,509 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:27,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27
[2022-02-24 01:14:27,509 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:27,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:27,509 INFO L85 PathProgramCache]: Analyzing trace with hash 325841872, now seen corresponding path program 27 times
[2022-02-24 01:14:27,510 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:27,510 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376422385]
[2022-02-24 01:14:27,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:27,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:27,513 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:27,513 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:27,513 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:27,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:27,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:27,833 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:27,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376422385]
[2022-02-24 01:14:27,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1376422385] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:27,833 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:27,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31
[2022-02-24 01:14:27,833 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888934158]
[2022-02-24 01:14:27,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:27,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states
[2022-02-24 01:14:27,833 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:27,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants.
[2022-02-24 01:14:27,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930
[2022-02-24 01:14:27,834 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand has 31 states, 31 states have (on average 2.0) internal successors, (62), 30 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:28,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:28,243 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions.
[2022-02-24 01:14:28,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2022-02-24 01:14:28,245 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.0) internal successors, (62), 30 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66
[2022-02-24 01:14:28,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:28,245 INFO L225 Difference]: With dead ends: 76
[2022-02-24 01:14:28,245 INFO L226 Difference]: Without dead ends: 70
[2022-02-24 01:14:28,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422
[2022-02-24 01:14:28,247 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 64 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:28,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 29 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:28,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states.
[2022-02-24 01:14:28,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69.
[2022-02-24 01:14:28,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.015625) internal successors, (65), 64 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:28,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions.
[2022-02-24 01:14:28,254 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66
[2022-02-24 01:14:28,254 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:28,254 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions.
[2022-02-24 01:14:28,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.0) internal successors, (62), 30 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:28,254 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions.
[2022-02-24 01:14:28,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2022-02-24 01:14:28,254 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:28,254 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:28,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28
[2022-02-24 01:14:28,255 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:28,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:28,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1272661006, now seen corresponding path program 28 times
[2022-02-24 01:14:28,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:28,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636680045]
[2022-02-24 01:14:28,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:28,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:28,257 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:28,257 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:28,258 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:28,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:28,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:28,585 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:28,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636680045]
[2022-02-24 01:14:28,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [636680045] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:28,585 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:28,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32
[2022-02-24 01:14:28,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71884128]
[2022-02-24 01:14:28,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:28,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2022-02-24 01:14:28,586 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:28,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2022-02-24 01:14:28,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992
[2022-02-24 01:14:28,587 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand has 32 states, 32 states have (on average 2.0) internal successors, (64), 31 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:29,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:29,045 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions.
[2022-02-24 01:14:29,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2022-02-24 01:14:29,045 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0) internal successors, (64), 31 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68
[2022-02-24 01:14:29,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:29,046 INFO L225 Difference]: With dead ends: 78
[2022-02-24 01:14:29,046 INFO L226 Difference]: Without dead ends: 72
[2022-02-24 01:14:29,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660
[2022-02-24 01:14:29,048 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 66 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:29,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 44 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:29,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2022-02-24 01:14:29,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71.
[2022-02-24 01:14:29,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 66 states have internal predecessors, (67), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions.
[2022-02-24 01:14:29,055 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68
[2022-02-24 01:14:29,056 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:29,056 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions.
[2022-02-24 01:14:29,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.0) internal successors, (64), 31 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:29,056 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions.
[2022-02-24 01:14:29,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2022-02-24 01:14:29,056 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:29,056 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:29,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29
[2022-02-24 01:14:29,056 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:29,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:29,057 INFO L85 PathProgramCache]: Analyzing trace with hash 164365204, now seen corresponding path program 29 times
[2022-02-24 01:14:29,057 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:29,057 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463807936]
[2022-02-24 01:14:29,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:29,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:29,060 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:29,060 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:29,060 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:29,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:29,439 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:29,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463807936]
[2022-02-24 01:14:29,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [463807936] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:29,439 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:29,440 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33
[2022-02-24 01:14:29,440 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155067160]
[2022-02-24 01:14:29,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:29,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states
[2022-02-24 01:14:29,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:29,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2022-02-24 01:14:29,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056
[2022-02-24 01:14:29,441 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:29,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:29,913 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions.
[2022-02-24 01:14:29,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2022-02-24 01:14:29,914 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70
[2022-02-24 01:14:29,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:29,914 INFO L225 Difference]: With dead ends: 80
[2022-02-24 01:14:29,914 INFO L226 Difference]: Without dead ends: 74
[2022-02-24 01:14:29,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906
[2022-02-24 01:14:29,915 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 68 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:29,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 49 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:29,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states.
[2022-02-24 01:14:29,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73.
[2022-02-24 01:14:29,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.0147058823529411) internal successors, (69), 68 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:29,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions.
[2022-02-24 01:14:29,923 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70
[2022-02-24 01:14:29,923 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:29,923 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions.
[2022-02-24 01:14:29,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:29,924 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions.
[2022-02-24 01:14:29,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73
[2022-02-24 01:14:29,924 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:29,924 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:29,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30
[2022-02-24 01:14:29,924 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:29,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:29,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1832916298, now seen corresponding path program 30 times
[2022-02-24 01:14:29,925 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:29,925 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052574141]
[2022-02-24 01:14:29,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:29,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:29,927 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:29,928 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:29,928 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:30,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:30,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:30,278 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:30,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052574141]
[2022-02-24 01:14:30,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2052574141] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:30,278 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:30,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34
[2022-02-24 01:14:30,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707934648]
[2022-02-24 01:14:30,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:30,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states
[2022-02-24 01:14:30,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:30,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2022-02-24 01:14:30,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122
[2022-02-24 01:14:30,279 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand has 34 states, 34 states have (on average 2.0) internal successors, (68), 33 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:30,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:30,758 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions.
[2022-02-24 01:14:30,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2022-02-24 01:14:30,758 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0) internal successors, (68), 33 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72
[2022-02-24 01:14:30,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:30,759 INFO L225 Difference]: With dead ends: 82
[2022-02-24 01:14:30,759 INFO L226 Difference]: Without dead ends: 76
[2022-02-24 01:14:30,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160
[2022-02-24 01:14:30,761 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 70 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:30,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 34 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:30,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states.
[2022-02-24 01:14:30,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75.
[2022-02-24 01:14:30,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.0142857142857142) internal successors, (71), 70 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:30,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions.
[2022-02-24 01:14:30,769 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72
[2022-02-24 01:14:30,769 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:30,769 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions.
[2022-02-24 01:14:30,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.0) internal successors, (68), 33 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:30,769 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions.
[2022-02-24 01:14:30,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2022-02-24 01:14:30,770 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:30,770 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:30,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31
[2022-02-24 01:14:30,770 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:30,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:30,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1370058408, now seen corresponding path program 31 times
[2022-02-24 01:14:30,770 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:30,771 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417383489]
[2022-02-24 01:14:30,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:30,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:30,773 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:30,774 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:30,774 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:31,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:31,177 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:31,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417383489]
[2022-02-24 01:14:31,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [417383489] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:31,177 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:31,177 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35
[2022-02-24 01:14:31,178 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834191764]
[2022-02-24 01:14:31,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:31,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states
[2022-02-24 01:14:31,178 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:31,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2022-02-24 01:14:31,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190
[2022-02-24 01:14:31,179 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:31,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:31,709 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions.
[2022-02-24 01:14:31,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2022-02-24 01:14:31,710 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74
[2022-02-24 01:14:31,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:31,710 INFO L225 Difference]: With dead ends: 84
[2022-02-24 01:14:31,710 INFO L226 Difference]: Without dead ends: 78
[2022-02-24 01:14:31,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422
[2022-02-24 01:14:31,711 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 72 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:31,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 34 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:31,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2022-02-24 01:14:31,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77.
[2022-02-24 01:14:31,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0138888888888888) internal successors, (73), 72 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:31,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions.
[2022-02-24 01:14:31,723 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74
[2022-02-24 01:14:31,723 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:31,723 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions.
[2022-02-24 01:14:31,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:31,723 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions.
[2022-02-24 01:14:31,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77
[2022-02-24 01:14:31,724 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:31,724 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:31,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32
[2022-02-24 01:14:31,724 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:31,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:31,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1054742394, now seen corresponding path program 32 times
[2022-02-24 01:14:31,725 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:31,725 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768542549]
[2022-02-24 01:14:31,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:31,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:31,728 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:31,728 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:31,728 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:32,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:32,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:32,184 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:32,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768542549]
[2022-02-24 01:14:32,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [768542549] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:32,184 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:32,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36
[2022-02-24 01:14:32,184 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027282551]
[2022-02-24 01:14:32,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:32,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states
[2022-02-24 01:14:32,185 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:32,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2022-02-24 01:14:32,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260
[2022-02-24 01:14:32,185 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand has 36 states, 36 states have (on average 2.0) internal successors, (72), 35 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:32,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:32,721 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions.
[2022-02-24 01:14:32,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2022-02-24 01:14:32,722 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0) internal successors, (72), 35 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76
[2022-02-24 01:14:32,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:32,722 INFO L225 Difference]: With dead ends: 86
[2022-02-24 01:14:32,722 INFO L226 Difference]: Without dead ends: 80
[2022-02-24 01:14:32,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692
[2022-02-24 01:14:32,724 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 74 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:32,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 29 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:32,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2022-02-24 01:14:32,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79.
[2022-02-24 01:14:32,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.0135135135135136) internal successors, (75), 74 states have internal predecessors, (75), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:32,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions.
[2022-02-24 01:14:32,732 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76
[2022-02-24 01:14:32,733 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:32,733 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions.
[2022-02-24 01:14:32,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0) internal successors, (72), 35 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:32,733 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions.
[2022-02-24 01:14:32,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2022-02-24 01:14:32,733 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:32,733 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:32,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33
[2022-02-24 01:14:32,733 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:32,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:32,734 INFO L85 PathProgramCache]: Analyzing trace with hash -878928612, now seen corresponding path program 33 times
[2022-02-24 01:14:32,734 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:32,734 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972597216]
[2022-02-24 01:14:32,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:32,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:32,737 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:32,737 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:32,737 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:33,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:33,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:33,155 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:33,155 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972597216]
[2022-02-24 01:14:33,155 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1972597216] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:33,155 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:33,155 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37
[2022-02-24 01:14:33,155 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112251913]
[2022-02-24 01:14:33,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:33,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states
[2022-02-24 01:14:33,155 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:33,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2022-02-24 01:14:33,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332
[2022-02-24 01:14:33,156 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand has 37 states, 37 states have (on average 2.0) internal successors, (74), 36 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:33,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:33,742 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions.
[2022-02-24 01:14:33,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2022-02-24 01:14:33,743 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.0) internal successors, (74), 36 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 78
[2022-02-24 01:14:33,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:33,744 INFO L225 Difference]: With dead ends: 88
[2022-02-24 01:14:33,744 INFO L226 Difference]: Without dead ends: 82
[2022-02-24 01:14:33,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970
[2022-02-24 01:14:33,745 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 76 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:33,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 34 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:33,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states.
[2022-02-24 01:14:33,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81.
[2022-02-24 01:14:33,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 76 states have (on average 1.013157894736842) internal successors, (77), 76 states have internal predecessors, (77), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:33,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions.
[2022-02-24 01:14:33,754 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78
[2022-02-24 01:14:33,755 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:33,755 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions.
[2022-02-24 01:14:33,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.0) internal successors, (74), 36 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:33,755 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions.
[2022-02-24 01:14:33,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81
[2022-02-24 01:14:33,755 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:33,755 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:33,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34
[2022-02-24 01:14:33,755 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:33,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:33,756 INFO L85 PathProgramCache]: Analyzing trace with hash 584073790, now seen corresponding path program 34 times
[2022-02-24 01:14:33,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:33,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243435844]
[2022-02-24 01:14:33,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:33,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:33,759 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:33,759 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:33,759 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:34,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:34,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:34,189 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:34,189 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243435844]
[2022-02-24 01:14:34,189 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1243435844] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:34,189 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:34,189 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38
[2022-02-24 01:14:34,189 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478859634]
[2022-02-24 01:14:34,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:34,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states
[2022-02-24 01:14:34,190 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:34,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2022-02-24 01:14:34,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406
[2022-02-24 01:14:34,190 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand has 38 states, 38 states have (on average 2.0) internal successors, (76), 37 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:34,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:34,754 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions.
[2022-02-24 01:14:34,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2022-02-24 01:14:34,754 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.0) internal successors, (76), 37 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80
[2022-02-24 01:14:34,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:34,754 INFO L225 Difference]: With dead ends: 90
[2022-02-24 01:14:34,754 INFO L226 Difference]: Without dead ends: 84
[2022-02-24 01:14:34,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256
[2022-02-24 01:14:34,756 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 78 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:34,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 34 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:34,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states.
[2022-02-24 01:14:34,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83.
[2022-02-24 01:14:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.0128205128205128) internal successors, (79), 78 states have internal predecessors, (79), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:34,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions.
[2022-02-24 01:14:34,766 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80
[2022-02-24 01:14:34,766 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:34,766 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions.
[2022-02-24 01:14:34,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.0) internal successors, (76), 37 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:34,766 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions.
[2022-02-24 01:14:34,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83
[2022-02-24 01:14:34,767 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:34,767 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:34,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35
[2022-02-24 01:14:34,767 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:34,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:34,767 INFO L85 PathProgramCache]: Analyzing trace with hash 2075076320, now seen corresponding path program 35 times
[2022-02-24 01:14:34,767 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:34,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977539642]
[2022-02-24 01:14:34,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:34,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:34,771 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:34,771 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:34,771 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:35,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:35,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:35,234 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:35,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977539642]
[2022-02-24 01:14:35,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1977539642] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:35,235 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:35,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39
[2022-02-24 01:14:35,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012398527]
[2022-02-24 01:14:35,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:35,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states
[2022-02-24 01:14:35,235 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:35,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants.
[2022-02-24 01:14:35,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482
[2022-02-24 01:14:35,236 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand has 39 states, 39 states have (on average 2.0) internal successors, (78), 38 states have internal predecessors, (78), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:35,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:35,864 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions.
[2022-02-24 01:14:35,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2022-02-24 01:14:35,865 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.0) internal successors, (78), 38 states have internal predecessors, (78), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82
[2022-02-24 01:14:35,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:35,866 INFO L225 Difference]: With dead ends: 92
[2022-02-24 01:14:35,866 INFO L226 Difference]: Without dead ends: 86
[2022-02-24 01:14:35,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550
[2022-02-24 01:14:35,867 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 80 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:35,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 34 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:35,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states.
[2022-02-24 01:14:35,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85.
[2022-02-24 01:14:35,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.0125) internal successors, (81), 80 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:35,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions.
[2022-02-24 01:14:35,899 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82
[2022-02-24 01:14:35,899 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:35,899 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions.
[2022-02-24 01:14:35,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.0) internal successors, (78), 38 states have internal predecessors, (78), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:35,899 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions.
[2022-02-24 01:14:35,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85
[2022-02-24 01:14:35,900 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:35,900 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:35,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36
[2022-02-24 01:14:35,900 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:35,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:35,900 INFO L85 PathProgramCache]: Analyzing trace with hash 409430786, now seen corresponding path program 36 times
[2022-02-24 01:14:35,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:35,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240215828]
[2022-02-24 01:14:35,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:35,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:35,904 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:35,904 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:35,904 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:36,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:36,427 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:36,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240215828]
[2022-02-24 01:14:36,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [240215828] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:36,428 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:36,428 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40
[2022-02-24 01:14:36,428 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77991710]
[2022-02-24 01:14:36,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:36,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states
[2022-02-24 01:14:36,428 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:36,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants.
[2022-02-24 01:14:36,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560
[2022-02-24 01:14:36,429 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand has 40 states, 40 states have (on average 2.0) internal successors, (80), 39 states have internal predecessors, (80), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:37,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:37,103 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions.
[2022-02-24 01:14:37,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2022-02-24 01:14:37,103 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.0) internal successors, (80), 39 states have internal predecessors, (80), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84
[2022-02-24 01:14:37,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:37,104 INFO L225 Difference]: With dead ends: 94
[2022-02-24 01:14:37,104 INFO L226 Difference]: Without dead ends: 88
[2022-02-24 01:14:37,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852
[2022-02-24 01:14:37,105 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 82 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:37,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 39 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:37,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states.
[2022-02-24 01:14:37,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87.
[2022-02-24 01:14:37,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.0121951219512195) internal successors, (83), 82 states have internal predecessors, (83), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:37,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions.
[2022-02-24 01:14:37,116 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84
[2022-02-24 01:14:37,116 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:37,116 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions.
[2022-02-24 01:14:37,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.0) internal successors, (80), 39 states have internal predecessors, (80), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:37,116 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions.
[2022-02-24 01:14:37,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87
[2022-02-24 01:14:37,117 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:37,117 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:37,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37
[2022-02-24 01:14:37,117 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:37,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:37,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1746874020, now seen corresponding path program 37 times
[2022-02-24 01:14:37,117 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:37,117 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94933540]
[2022-02-24 01:14:37,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:37,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:37,121 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:37,121 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:37,121 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:37,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:37,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:37,645 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:37,645 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94933540]
[2022-02-24 01:14:37,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [94933540] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:37,645 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:37,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41
[2022-02-24 01:14:37,645 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908168225]
[2022-02-24 01:14:37,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:37,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states
[2022-02-24 01:14:37,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:37,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants.
[2022-02-24 01:14:37,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640
[2022-02-24 01:14:37,646 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand has 41 states, 41 states have (on average 2.0) internal successors, (82), 40 states have internal predecessors, (82), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:38,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:38,304 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions.
[2022-02-24 01:14:38,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2022-02-24 01:14:38,304 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.0) internal successors, (82), 40 states have internal predecessors, (82), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86
[2022-02-24 01:14:38,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:38,305 INFO L225 Difference]: With dead ends: 96
[2022-02-24 01:14:38,305 INFO L226 Difference]: Without dead ends: 90
[2022-02-24 01:14:38,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162
[2022-02-24 01:14:38,306 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 84 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:38,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 39 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:38,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2022-02-24 01:14:38,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89.
[2022-02-24 01:14:38,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.0119047619047619) internal successors, (85), 84 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:38,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions.
[2022-02-24 01:14:38,319 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86
[2022-02-24 01:14:38,319 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:38,319 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions.
[2022-02-24 01:14:38,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.0) internal successors, (82), 40 states have internal predecessors, (82), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:38,319 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions.
[2022-02-24 01:14:38,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89
[2022-02-24 01:14:38,319 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:38,319 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:38,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38
[2022-02-24 01:14:38,320 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:38,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:38,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1460366906, now seen corresponding path program 38 times
[2022-02-24 01:14:38,320 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:38,320 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968358647]
[2022-02-24 01:14:38,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:38,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:38,323 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:38,323 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:38,324 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:38,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:38,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:38,884 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:38,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968358647]
[2022-02-24 01:14:38,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1968358647] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:38,884 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:38,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42
[2022-02-24 01:14:38,884 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299391101]
[2022-02-24 01:14:38,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:38,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states
[2022-02-24 01:14:38,885 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:38,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants.
[2022-02-24 01:14:38,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722
[2022-02-24 01:14:38,886 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand has 42 states, 42 states have (on average 2.0) internal successors, (84), 41 states have internal predecessors, (84), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:39,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:39,651 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions.
[2022-02-24 01:14:39,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2022-02-24 01:14:39,651 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0) internal successors, (84), 41 states have internal predecessors, (84), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 88
[2022-02-24 01:14:39,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:39,652 INFO L225 Difference]: With dead ends: 98
[2022-02-24 01:14:39,652 INFO L226 Difference]: Without dead ends: 92
[2022-02-24 01:14:39,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480
[2022-02-24 01:14:39,668 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 86 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:39,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 49 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:39,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2022-02-24 01:14:39,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91.
[2022-02-24 01:14:39,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.0116279069767442) internal successors, (87), 86 states have internal predecessors, (87), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:39,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions.
[2022-02-24 01:14:39,688 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88
[2022-02-24 01:14:39,688 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:39,688 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions.
[2022-02-24 01:14:39,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.0) internal successors, (84), 41 states have internal predecessors, (84), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:39,688 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions.
[2022-02-24 01:14:39,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91
[2022-02-24 01:14:39,688 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:39,688 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:39,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39
[2022-02-24 01:14:39,689 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:39,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:39,689 INFO L85 PathProgramCache]: Analyzing trace with hash 167621736, now seen corresponding path program 39 times
[2022-02-24 01:14:39,689 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:39,689 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053611352]
[2022-02-24 01:14:39,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:39,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:39,695 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:39,696 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:39,696 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:40,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:40,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:40,275 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:40,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053611352]
[2022-02-24 01:14:40,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1053611352] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:40,275 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:40,275 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43
[2022-02-24 01:14:40,275 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982173159]
[2022-02-24 01:14:40,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:40,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states
[2022-02-24 01:14:40,275 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:40,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants.
[2022-02-24 01:14:40,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806
[2022-02-24 01:14:40,276 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand has 43 states, 43 states have (on average 2.0) internal successors, (86), 42 states have internal predecessors, (86), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:41,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:41,052 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions.
[2022-02-24 01:14:41,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2022-02-24 01:14:41,052 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.0) internal successors, (86), 42 states have internal predecessors, (86), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 90
[2022-02-24 01:14:41,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:41,053 INFO L225 Difference]: With dead ends: 100
[2022-02-24 01:14:41,053 INFO L226 Difference]: Without dead ends: 94
[2022-02-24 01:14:41,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806
[2022-02-24 01:14:41,054 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 88 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:41,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 39 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:41,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2022-02-24 01:14:41,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93.
[2022-02-24 01:14:41,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 88 states have (on average 1.0113636363636365) internal successors, (89), 88 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:41,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions.
[2022-02-24 01:14:41,068 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90
[2022-02-24 01:14:41,068 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:41,068 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions.
[2022-02-24 01:14:41,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.0) internal successors, (86), 42 states have internal predecessors, (86), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:41,068 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions.
[2022-02-24 01:14:41,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93
[2022-02-24 01:14:41,069 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:41,069 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:41,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40
[2022-02-24 01:14:41,069 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:41,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:41,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1296610954, now seen corresponding path program 40 times
[2022-02-24 01:14:41,069 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:41,069 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115792282]
[2022-02-24 01:14:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:41,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:41,073 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:41,073 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:41,073 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:41,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:41,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:41,637 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:41,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115792282]
[2022-02-24 01:14:41,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1115792282] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:41,637 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:41,637 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44
[2022-02-24 01:14:41,637 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646898604]
[2022-02-24 01:14:41,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:41,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states
[2022-02-24 01:14:41,637 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:41,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants.
[2022-02-24 01:14:41,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892
[2022-02-24 01:14:41,638 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand has 44 states, 44 states have (on average 2.0) internal successors, (88), 43 states have internal predecessors, (88), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:42,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:42,368 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions.
[2022-02-24 01:14:42,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2022-02-24 01:14:42,369 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.0) internal successors, (88), 43 states have internal predecessors, (88), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92
[2022-02-24 01:14:42,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:42,369 INFO L225 Difference]: With dead ends: 102
[2022-02-24 01:14:42,369 INFO L226 Difference]: Without dead ends: 96
[2022-02-24 01:14:42,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140
[2022-02-24 01:14:42,371 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 90 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:42,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 34 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:42,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2022-02-24 01:14:42,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95.
[2022-02-24 01:14:42,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 90 states have (on average 1.011111111111111) internal successors, (91), 90 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:42,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions.
[2022-02-24 01:14:42,399 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92
[2022-02-24 01:14:42,399 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:42,399 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions.
[2022-02-24 01:14:42,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.0) internal successors, (88), 43 states have internal predecessors, (88), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:42,399 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions.
[2022-02-24 01:14:42,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95
[2022-02-24 01:14:42,400 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:42,400 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:42,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41
[2022-02-24 01:14:42,400 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:42,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:42,400 INFO L85 PathProgramCache]: Analyzing trace with hash -371476436, now seen corresponding path program 41 times
[2022-02-24 01:14:42,401 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:42,401 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463746928]
[2022-02-24 01:14:42,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:42,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:42,404 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:42,404 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:42,404 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:43,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:43,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:43,041 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:43,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463746928]
[2022-02-24 01:14:43,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [463746928] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:43,041 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:43,041 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45
[2022-02-24 01:14:43,041 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793783472]
[2022-02-24 01:14:43,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:43,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states
[2022-02-24 01:14:43,042 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:43,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2022-02-24 01:14:43,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980
[2022-02-24 01:14:43,042 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand has 45 states, 45 states have (on average 2.0) internal successors, (90), 44 states have internal predecessors, (90), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:43,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:43,817 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions.
[2022-02-24 01:14:43,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2022-02-24 01:14:43,817 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.0) internal successors, (90), 44 states have internal predecessors, (90), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94
[2022-02-24 01:14:43,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:43,818 INFO L225 Difference]: With dead ends: 104
[2022-02-24 01:14:43,818 INFO L226 Difference]: Without dead ends: 98
[2022-02-24 01:14:43,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2838, Invalid=4644, Unknown=0, NotChecked=0, Total=7482
[2022-02-24 01:14:43,819 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 92 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:43,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 29 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:43,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states.
[2022-02-24 01:14:43,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97.
[2022-02-24 01:14:43,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.0108695652173914) internal successors, (93), 92 states have internal predecessors, (93), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:43,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions.
[2022-02-24 01:14:43,832 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94
[2022-02-24 01:14:43,832 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:43,833 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions.
[2022-02-24 01:14:43,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.0) internal successors, (90), 44 states have internal predecessors, (90), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:43,833 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions.
[2022-02-24 01:14:43,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97
[2022-02-24 01:14:43,833 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:43,833 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:43,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42
[2022-02-24 01:14:43,833 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:43,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:43,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1380656818, now seen corresponding path program 42 times
[2022-02-24 01:14:43,834 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:43,834 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277453977]
[2022-02-24 01:14:43,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:43,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:43,837 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:43,837 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:43,837 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:44,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:44,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:44,495 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:44,495 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277453977]
[2022-02-24 01:14:44,495 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1277453977] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:44,495 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:44,495 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46
[2022-02-24 01:14:44,496 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293192866]
[2022-02-24 01:14:44,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:44,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states
[2022-02-24 01:14:44,496 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:44,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants.
[2022-02-24 01:14:44,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070
[2022-02-24 01:14:44,497 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand has 46 states, 46 states have (on average 2.0) internal successors, (92), 45 states have internal predecessors, (92), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:45,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:45,372 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions.
[2022-02-24 01:14:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2022-02-24 01:14:45,372 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.0) internal successors, (92), 45 states have internal predecessors, (92), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96
[2022-02-24 01:14:45,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:45,373 INFO L225 Difference]: With dead ends: 106
[2022-02-24 01:14:45,373 INFO L226 Difference]: Without dead ends: 100
[2022-02-24 01:14:45,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2970, Invalid=4862, Unknown=0, NotChecked=0, Total=7832
[2022-02-24 01:14:45,374 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 94 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:45,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 34 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:45,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states.
[2022-02-24 01:14:45,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99.
[2022-02-24 01:14:45,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 94 states have (on average 1.0106382978723405) internal successors, (95), 94 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:45,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions.
[2022-02-24 01:14:45,390 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96
[2022-02-24 01:14:45,390 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:45,390 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions.
[2022-02-24 01:14:45,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.0) internal successors, (92), 45 states have internal predecessors, (92), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:45,390 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions.
[2022-02-24 01:14:45,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-02-24 01:14:45,390 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:45,390 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:45,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43
[2022-02-24 01:14:45,391 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:45,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:45,391 INFO L85 PathProgramCache]: Analyzing trace with hash -540395024, now seen corresponding path program 43 times
[2022-02-24 01:14:45,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:45,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079985719]
[2022-02-24 01:14:45,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:45,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:45,395 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:45,395 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:45,395 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:46,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:46,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:46,092 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:46,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079985719]
[2022-02-24 01:14:46,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2079985719] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:46,093 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:46,093 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47
[2022-02-24 01:14:46,093 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706520513]
[2022-02-24 01:14:46,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:46,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states
[2022-02-24 01:14:46,093 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:46,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants.
[2022-02-24 01:14:46,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162
[2022-02-24 01:14:46,094 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand has 47 states, 47 states have (on average 2.0) internal successors, (94), 46 states have internal predecessors, (94), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:47,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:47,001 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions.
[2022-02-24 01:14:47,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2022-02-24 01:14:47,001 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.0) internal successors, (94), 46 states have internal predecessors, (94), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98
[2022-02-24 01:14:47,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:47,001 INFO L225 Difference]: With dead ends: 108
[2022-02-24 01:14:47,001 INFO L226 Difference]: Without dead ends: 102
[2022-02-24 01:14:47,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190
[2022-02-24 01:14:47,002 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 96 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:47,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 44 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:47,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states.
[2022-02-24 01:14:47,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101.
[2022-02-24 01:14:47,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 1.0104166666666667) internal successors, (97), 96 states have internal predecessors, (97), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:47,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions.
[2022-02-24 01:14:47,016 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98
[2022-02-24 01:14:47,017 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:47,017 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions.
[2022-02-24 01:14:47,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.0) internal successors, (94), 46 states have internal predecessors, (94), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:47,017 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions.
[2022-02-24 01:14:47,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101
[2022-02-24 01:14:47,017 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:47,017 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:47,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44
[2022-02-24 01:14:47,017 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:47,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:47,018 INFO L85 PathProgramCache]: Analyzing trace with hash -502662638, now seen corresponding path program 44 times
[2022-02-24 01:14:47,018 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:47,018 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993693234]
[2022-02-24 01:14:47,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:47,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:47,022 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:47,022 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:47,022 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:47,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:47,750 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:47,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993693234]
[2022-02-24 01:14:47,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [993693234] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:47,750 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:47,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48
[2022-02-24 01:14:47,750 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907243081]
[2022-02-24 01:14:47,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:47,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states
[2022-02-24 01:14:47,751 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:47,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants.
[2022-02-24 01:14:47,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256
[2022-02-24 01:14:47,751 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand has 48 states, 48 states have (on average 2.0) internal successors, (96), 47 states have internal predecessors, (96), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:48,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:48,663 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions.
[2022-02-24 01:14:48,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2022-02-24 01:14:48,663 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0) internal successors, (96), 47 states have internal predecessors, (96), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100
[2022-02-24 01:14:48,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:48,664 INFO L225 Difference]: With dead ends: 110
[2022-02-24 01:14:48,664 INFO L226 Difference]: Without dead ends: 104
[2022-02-24 01:14:48,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3243, Invalid=5313, Unknown=0, NotChecked=0, Total=8556
[2022-02-24 01:14:48,665 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 98 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:48,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 19 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:48,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2022-02-24 01:14:48,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103.
[2022-02-24 01:14:48,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.010204081632653) internal successors, (99), 98 states have internal predecessors, (99), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:48,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions.
[2022-02-24 01:14:48,680 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100
[2022-02-24 01:14:48,681 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:48,681 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions.
[2022-02-24 01:14:48,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.0) internal successors, (96), 47 states have internal predecessors, (96), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:48,681 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions.
[2022-02-24 01:14:48,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103
[2022-02-24 01:14:48,681 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:48,681 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:48,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45
[2022-02-24 01:14:48,681 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:48,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:48,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1398421940, now seen corresponding path program 45 times
[2022-02-24 01:14:48,682 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:48,682 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597256532]
[2022-02-24 01:14:48,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:48,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:48,686 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:48,686 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:48,686 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:49,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:49,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:49,404 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:49,404 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597256532]
[2022-02-24 01:14:49,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [597256532] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:49,404 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:49,404 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49
[2022-02-24 01:14:49,404 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11702274]
[2022-02-24 01:14:49,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:49,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states
[2022-02-24 01:14:49,404 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:49,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants.
[2022-02-24 01:14:49,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352
[2022-02-24 01:14:49,405 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand has 49 states, 49 states have (on average 2.0) internal successors, (98), 48 states have internal predecessors, (98), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:50,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:50,308 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions.
[2022-02-24 01:14:50,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states.
[2022-02-24 01:14:50,309 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.0) internal successors, (98), 48 states have internal predecessors, (98), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102
[2022-02-24 01:14:50,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:50,309 INFO L225 Difference]: With dead ends: 112
[2022-02-24 01:14:50,309 INFO L226 Difference]: Without dead ends: 106
[2022-02-24 01:14:50,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930
[2022-02-24 01:14:50,311 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 100 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:50,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 54 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:50,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states.
[2022-02-24 01:14:50,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105.
[2022-02-24 01:14:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.01) internal successors, (101), 100 states have internal predecessors, (101), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:50,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions.
[2022-02-24 01:14:50,330 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102
[2022-02-24 01:14:50,330 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:50,330 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions.
[2022-02-24 01:14:50,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.0) internal successors, (98), 48 states have internal predecessors, (98), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:50,330 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions.
[2022-02-24 01:14:50,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105
[2022-02-24 01:14:50,331 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:50,331 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:50,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46
[2022-02-24 01:14:50,331 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:50,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:50,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1315366698, now seen corresponding path program 46 times
[2022-02-24 01:14:50,331 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:50,331 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114502319]
[2022-02-24 01:14:50,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:50,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:50,335 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:50,335 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:50,335 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:51,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:51,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:51,105 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:51,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114502319]
[2022-02-24 01:14:51,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2114502319] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:51,105 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:51,105 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50
[2022-02-24 01:14:51,105 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104582803]
[2022-02-24 01:14:51,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:51,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states
[2022-02-24 01:14:51,106 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:51,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants.
[2022-02-24 01:14:51,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450
[2022-02-24 01:14:51,107 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand has 50 states, 50 states have (on average 2.0) internal successors, (100), 49 states have internal predecessors, (100), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:52,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:52,035 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions.
[2022-02-24 01:14:52,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2022-02-24 01:14:52,035 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.0) internal successors, (100), 49 states have internal predecessors, (100), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104
[2022-02-24 01:14:52,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:52,036 INFO L225 Difference]: With dead ends: 114
[2022-02-24 01:14:52,036 INFO L226 Difference]: Without dead ends: 108
[2022-02-24 01:14:52,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3528, Invalid=5784, Unknown=0, NotChecked=0, Total=9312
[2022-02-24 01:14:52,037 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 102 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:52,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 39 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:52,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states.
[2022-02-24 01:14:52,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107.
[2022-02-24 01:14:52,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 102 states have (on average 1.0098039215686274) internal successors, (103), 102 states have internal predecessors, (103), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:52,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions.
[2022-02-24 01:14:52,054 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104
[2022-02-24 01:14:52,054 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:52,054 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions.
[2022-02-24 01:14:52,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.0) internal successors, (100), 49 states have internal predecessors, (100), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:52,054 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions.
[2022-02-24 01:14:52,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107
[2022-02-24 01:14:52,054 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:52,054 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:52,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47
[2022-02-24 01:14:52,055 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:52,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:52,055 INFO L85 PathProgramCache]: Analyzing trace with hash 2073868152, now seen corresponding path program 47 times
[2022-02-24 01:14:52,055 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:52,055 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127579738]
[2022-02-24 01:14:52,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:52,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:52,059 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:52,059 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:52,059 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:52,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:52,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:52,833 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:52,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127579738]
[2022-02-24 01:14:52,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [127579738] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:52,834 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:52,834 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51
[2022-02-24 01:14:52,834 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900570898]
[2022-02-24 01:14:52,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:52,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states
[2022-02-24 01:14:52,834 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:52,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants.
[2022-02-24 01:14:52,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550
[2022-02-24 01:14:52,835 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand has 51 states, 51 states have (on average 2.0) internal successors, (102), 50 states have internal predecessors, (102), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:53,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:53,817 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions.
[2022-02-24 01:14:53,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states.
[2022-02-24 01:14:53,817 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.0) internal successors, (102), 50 states have internal predecessors, (102), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106
[2022-02-24 01:14:53,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:53,818 INFO L225 Difference]: With dead ends: 116
[2022-02-24 01:14:53,818 INFO L226 Difference]: Without dead ends: 110
[2022-02-24 01:14:53,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702
[2022-02-24 01:14:53,819 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 104 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:53,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 34 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:53,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states.
[2022-02-24 01:14:53,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109.
[2022-02-24 01:14:53,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 104 states have (on average 1.0096153846153846) internal successors, (105), 104 states have internal predecessors, (105), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:53,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions.
[2022-02-24 01:14:53,835 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106
[2022-02-24 01:14:53,835 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:53,835 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions.
[2022-02-24 01:14:53,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.0) internal successors, (102), 50 states have internal predecessors, (102), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:53,836 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions.
[2022-02-24 01:14:53,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109
[2022-02-24 01:14:53,836 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:53,836 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:53,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48
[2022-02-24 01:14:53,836 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:53,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:53,836 INFO L85 PathProgramCache]: Analyzing trace with hash -751618662, now seen corresponding path program 48 times
[2022-02-24 01:14:53,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:53,837 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595616877]
[2022-02-24 01:14:53,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:53,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:53,840 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:53,840 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:53,840 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:54,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:54,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:54,640 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:54,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595616877]
[2022-02-24 01:14:54,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1595616877] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:54,640 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:54,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52
[2022-02-24 01:14:54,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266497177]
[2022-02-24 01:14:54,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:54,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states
[2022-02-24 01:14:54,640 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:54,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants.
[2022-02-24 01:14:54,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652
[2022-02-24 01:14:54,641 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand has 52 states, 52 states have (on average 2.0) internal successors, (104), 51 states have internal predecessors, (104), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:55,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:55,671 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions.
[2022-02-24 01:14:55,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states.
[2022-02-24 01:14:55,671 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.0) internal successors, (104), 51 states have internal predecessors, (104), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 108
[2022-02-24 01:14:55,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:55,672 INFO L225 Difference]: With dead ends: 118
[2022-02-24 01:14:55,672 INFO L226 Difference]: Without dead ends: 112
[2022-02-24 01:14:55,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3825, Invalid=6275, Unknown=0, NotChecked=0, Total=10100
[2022-02-24 01:14:55,674 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 106 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:55,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 44 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:55,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states.
[2022-02-24 01:14:55,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111.
[2022-02-24 01:14:55,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 106 states have (on average 1.009433962264151) internal successors, (107), 106 states have internal predecessors, (107), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:55,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions.
[2022-02-24 01:14:55,694 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108
[2022-02-24 01:14:55,694 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:55,694 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions.
[2022-02-24 01:14:55,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.0) internal successors, (104), 51 states have internal predecessors, (104), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:55,694 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions.
[2022-02-24 01:14:55,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111
[2022-02-24 01:14:55,694 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:55,694 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:55,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49
[2022-02-24 01:14:55,695 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:55,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:55,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1625115844, now seen corresponding path program 49 times
[2022-02-24 01:14:55,695 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:55,695 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257800660]
[2022-02-24 01:14:55,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:55,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:55,699 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:55,699 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:55,699 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:56,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:56,526 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:56,526 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257800660]
[2022-02-24 01:14:56,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [257800660] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:56,526 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:56,526 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53
[2022-02-24 01:14:56,526 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845402381]
[2022-02-24 01:14:56,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:56,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states
[2022-02-24 01:14:56,526 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:56,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants.
[2022-02-24 01:14:56,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756
[2022-02-24 01:14:56,527 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand has 53 states, 53 states have (on average 2.0) internal successors, (106), 52 states have internal predecessors, (106), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:57,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:57,590 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions.
[2022-02-24 01:14:57,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2022-02-24 01:14:57,590 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.0) internal successors, (106), 52 states have internal predecessors, (106), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 110
[2022-02-24 01:14:57,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:57,591 INFO L225 Difference]: With dead ends: 120
[2022-02-24 01:14:57,591 INFO L226 Difference]: Without dead ends: 114
[2022-02-24 01:14:57,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506
[2022-02-24 01:14:57,593 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 108 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:57,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 34 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:57,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states.
[2022-02-24 01:14:57,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113.
[2022-02-24 01:14:57,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 108 states have (on average 1.0092592592592593) internal successors, (109), 108 states have internal predecessors, (109), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:57,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions.
[2022-02-24 01:14:57,627 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110
[2022-02-24 01:14:57,628 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:57,628 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions.
[2022-02-24 01:14:57,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.0) internal successors, (106), 52 states have internal predecessors, (106), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:57,628 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions.
[2022-02-24 01:14:57,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113
[2022-02-24 01:14:57,629 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:57,629 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:57,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50
[2022-02-24 01:14:57,629 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:57,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:57,629 INFO L85 PathProgramCache]: Analyzing trace with hash 757682270, now seen corresponding path program 50 times
[2022-02-24 01:14:57,629 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:57,629 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666638717]
[2022-02-24 01:14:57,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:57,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:57,634 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:57,634 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:57,634 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:58,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:14:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:14:58,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:14:58,479 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:14:58,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666638717]
[2022-02-24 01:14:58,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [666638717] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:14:58,480 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:14:58,480 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54
[2022-02-24 01:14:58,480 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298914989]
[2022-02-24 01:14:58,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:14:58,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states
[2022-02-24 01:14:58,480 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:14:58,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants.
[2022-02-24 01:14:58,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862
[2022-02-24 01:14:58,481 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand has 54 states, 54 states have (on average 2.0) internal successors, (108), 53 states have internal predecessors, (108), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:59,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:14:59,605 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions.
[2022-02-24 01:14:59,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states.
[2022-02-24 01:14:59,605 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.0) internal successors, (108), 53 states have internal predecessors, (108), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 112
[2022-02-24 01:14:59,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:14:59,606 INFO L225 Difference]: With dead ends: 122
[2022-02-24 01:14:59,606 INFO L226 Difference]: Without dead ends: 116
[2022-02-24 01:14:59,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920
[2022-02-24 01:14:59,608 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 110 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:14:59,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 34 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:14:59,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states.
[2022-02-24 01:14:59,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115.
[2022-02-24 01:14:59,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.009090909090909) internal successors, (111), 110 states have internal predecessors, (111), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:59,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions.
[2022-02-24 01:14:59,633 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112
[2022-02-24 01:14:59,633 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:14:59,633 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions.
[2022-02-24 01:14:59,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.0) internal successors, (108), 53 states have internal predecessors, (108), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:14:59,633 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions.
[2022-02-24 01:14:59,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115
[2022-02-24 01:14:59,634 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:14:59,634 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:14:59,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51
[2022-02-24 01:14:59,634 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:14:59,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:14:59,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1409101056, now seen corresponding path program 51 times
[2022-02-24 01:14:59,634 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:14:59,634 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573601088]
[2022-02-24 01:14:59,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:14:59,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:14:59,638 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:14:59,638 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:14:59,638 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:14:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:00,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:15:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:15:00,663 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:15:00,663 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573601088]
[2022-02-24 01:15:00,663 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1573601088] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:15:00,663 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:15:00,663 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55
[2022-02-24 01:15:00,663 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202461103]
[2022-02-24 01:15:00,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:15:00,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states
[2022-02-24 01:15:00,664 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:15:00,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants.
[2022-02-24 01:15:00,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970
[2022-02-24 01:15:00,665 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand has 55 states, 55 states have (on average 2.0) internal successors, (110), 54 states have internal predecessors, (110), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:01,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:15:01,906 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions.
[2022-02-24 01:15:01,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2022-02-24 01:15:01,907 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.0) internal successors, (110), 54 states have internal predecessors, (110), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114
[2022-02-24 01:15:01,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:15:01,907 INFO L225 Difference]: With dead ends: 124
[2022-02-24 01:15:01,907 INFO L226 Difference]: Without dead ends: 118
[2022-02-24 01:15:01,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342
[2022-02-24 01:15:01,909 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 112 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:15:01,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 39 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:15:01,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states.
[2022-02-24 01:15:01,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117.
[2022-02-24 01:15:01,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.0089285714285714) internal successors, (113), 112 states have internal predecessors, (113), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:01,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions.
[2022-02-24 01:15:01,928 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114
[2022-02-24 01:15:01,928 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:15:01,928 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions.
[2022-02-24 01:15:01,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.0) internal successors, (110), 54 states have internal predecessors, (110), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:01,929 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions.
[2022-02-24 01:15:01,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117
[2022-02-24 01:15:01,929 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:15:01,929 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:15:01,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52
[2022-02-24 01:15:01,929 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:15:01,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:15:01,929 INFO L85 PathProgramCache]: Analyzing trace with hash 357329186, now seen corresponding path program 52 times
[2022-02-24 01:15:01,930 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:15:01,930 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896121502]
[2022-02-24 01:15:01,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:15:01,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:15:01,933 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:15:01,933 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:15:01,933 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:15:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:02,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:15:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:02,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:15:02,904 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:15:02,904 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896121502]
[2022-02-24 01:15:02,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1896121502] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:15:02,905 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:15:02,905 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56
[2022-02-24 01:15:02,905 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408323765]
[2022-02-24 01:15:02,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:15:02,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states
[2022-02-24 01:15:02,905 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:15:02,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants.
[2022-02-24 01:15:02,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080
[2022-02-24 01:15:02,906 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand has 56 states, 56 states have (on average 2.0) internal successors, (112), 55 states have internal predecessors, (112), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:04,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:15:04,058 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions.
[2022-02-24 01:15:04,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states.
[2022-02-24 01:15:04,059 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0) internal successors, (112), 55 states have internal predecessors, (112), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 116
[2022-02-24 01:15:04,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:15:04,059 INFO L225 Difference]: With dead ends: 126
[2022-02-24 01:15:04,059 INFO L226 Difference]: Without dead ends: 120
[2022-02-24 01:15:04,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4455, Invalid=7317, Unknown=0, NotChecked=0, Total=11772
[2022-02-24 01:15:04,061 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 114 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:15:04,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 29 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:15:04,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states.
[2022-02-24 01:15:04,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119.
[2022-02-24 01:15:04,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 114 states have (on average 1.0087719298245614) internal successors, (115), 114 states have internal predecessors, (115), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:04,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions.
[2022-02-24 01:15:04,081 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116
[2022-02-24 01:15:04,081 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:15:04,081 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions.
[2022-02-24 01:15:04,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.0) internal successors, (112), 55 states have internal predecessors, (112), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:04,081 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions.
[2022-02-24 01:15:04,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119
[2022-02-24 01:15:04,081 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:15:04,081 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:15:04,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53
[2022-02-24 01:15:04,082 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:15:04,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:15:04,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1078123324, now seen corresponding path program 53 times
[2022-02-24 01:15:04,082 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:15:04,082 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089906034]
[2022-02-24 01:15:04,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:15:04,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:15:04,086 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:15:04,086 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:15:04,086 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:15:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:05,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:15:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:05,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:15:05,018 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:15:05,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089906034]
[2022-02-24 01:15:05,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2089906034] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:15:05,018 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:15:05,018 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57
[2022-02-24 01:15:05,019 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558067233]
[2022-02-24 01:15:05,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:15:05,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states
[2022-02-24 01:15:05,019 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:15:05,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants.
[2022-02-24 01:15:05,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192
[2022-02-24 01:15:05,020 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand has 57 states, 57 states have (on average 2.0) internal successors, (114), 56 states have internal predecessors, (114), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:06,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:15:06,231 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions.
[2022-02-24 01:15:06,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states.
[2022-02-24 01:15:06,232 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.0) internal successors, (114), 56 states have internal predecessors, (114), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 118
[2022-02-24 01:15:06,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:15:06,232 INFO L225 Difference]: With dead ends: 128
[2022-02-24 01:15:06,233 INFO L226 Difference]: Without dead ends: 122
[2022-02-24 01:15:06,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4620, Invalid=7590, Unknown=0, NotChecked=0, Total=12210
[2022-02-24 01:15:06,235 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 116 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:15:06,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 49 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:15:06,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states.
[2022-02-24 01:15:06,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121.
[2022-02-24 01:15:06,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 116 states have (on average 1.0086206896551724) internal successors, (117), 116 states have internal predecessors, (117), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:06,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions.
[2022-02-24 01:15:06,255 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118
[2022-02-24 01:15:06,255 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:15:06,255 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions.
[2022-02-24 01:15:06,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.0) internal successors, (114), 56 states have internal predecessors, (114), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:06,255 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions.
[2022-02-24 01:15:06,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121
[2022-02-24 01:15:06,255 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:15:06,256 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:15:06,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54
[2022-02-24 01:15:06,256 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:15:06,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:15:06,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1863483418, now seen corresponding path program 54 times
[2022-02-24 01:15:06,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:15:06,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068613605]
[2022-02-24 01:15:06,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:15:06,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:15:06,260 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:15:06,260 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:15:06,267 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:15:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:07,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:15:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:07,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:15:07,234 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:15:07,234 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068613605]
[2022-02-24 01:15:07,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2068613605] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:15:07,234 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:15:07,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58
[2022-02-24 01:15:07,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282225701]
[2022-02-24 01:15:07,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:15:07,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states
[2022-02-24 01:15:07,235 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:15:07,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants.
[2022-02-24 01:15:07,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306
[2022-02-24 01:15:07,236 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand has 58 states, 58 states have (on average 2.0) internal successors, (116), 57 states have internal predecessors, (116), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:08,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:15:08,498 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions.
[2022-02-24 01:15:08,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states.
[2022-02-24 01:15:08,498 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.0) internal successors, (116), 57 states have internal predecessors, (116), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 120
[2022-02-24 01:15:08,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:15:08,499 INFO L225 Difference]: With dead ends: 130
[2022-02-24 01:15:08,499 INFO L226 Difference]: Without dead ends: 124
[2022-02-24 01:15:08,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4788, Invalid=7868, Unknown=0, NotChecked=0, Total=12656
[2022-02-24 01:15:08,503 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 118 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:15:08,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 29 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:15:08,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states.
[2022-02-24 01:15:08,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123.
[2022-02-24 01:15:08,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 118 states have (on average 1.0084745762711864) internal successors, (119), 118 states have internal predecessors, (119), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:08,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions.
[2022-02-24 01:15:08,534 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120
[2022-02-24 01:15:08,534 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:15:08,534 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions.
[2022-02-24 01:15:08,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.0) internal successors, (116), 57 states have internal predecessors, (116), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:08,534 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions.
[2022-02-24 01:15:08,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123
[2022-02-24 01:15:08,535 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:15:08,535 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:15:08,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55
[2022-02-24 01:15:08,535 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:15:08,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:15:08,535 INFO L85 PathProgramCache]: Analyzing trace with hash -680289656, now seen corresponding path program 55 times
[2022-02-24 01:15:08,535 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:15:08,535 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836381868]
[2022-02-24 01:15:08,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:15:08,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:15:08,539 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:15:08,539 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:15:08,539 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:15:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:09,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:15:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:09,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:15:09,548 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:15:09,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836381868]
[2022-02-24 01:15:09,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [836381868] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:15:09,548 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:15:09,548 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59
[2022-02-24 01:15:09,548 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304053727]
[2022-02-24 01:15:09,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:15:09,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states
[2022-02-24 01:15:09,549 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:15:09,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants.
[2022-02-24 01:15:09,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422
[2022-02-24 01:15:09,550 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand has 59 states, 59 states have (on average 2.0) internal successors, (118), 58 states have internal predecessors, (118), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:10,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:15:10,880 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions.
[2022-02-24 01:15:10,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states.
[2022-02-24 01:15:10,881 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.0) internal successors, (118), 58 states have internal predecessors, (118), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122
[2022-02-24 01:15:10,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:15:10,881 INFO L225 Difference]: With dead ends: 132
[2022-02-24 01:15:10,881 INFO L226 Difference]: Without dead ends: 126
[2022-02-24 01:15:10,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110
[2022-02-24 01:15:10,882 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 120 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:15:10,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 49 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:15:10,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states.
[2022-02-24 01:15:10,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125.
[2022-02-24 01:15:10,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.0083333333333333) internal successors, (121), 120 states have internal predecessors, (121), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:10,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions.
[2022-02-24 01:15:10,904 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122
[2022-02-24 01:15:10,904 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:15:10,904 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions.
[2022-02-24 01:15:10,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.0) internal successors, (118), 58 states have internal predecessors, (118), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:10,904 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions.
[2022-02-24 01:15:10,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125
[2022-02-24 01:15:10,904 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:15:10,905 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:15:10,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56
[2022-02-24 01:15:10,905 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:15:10,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:15:10,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1797417814, now seen corresponding path program 56 times
[2022-02-24 01:15:10,905 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:15:10,905 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285213591]
[2022-02-24 01:15:10,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:15:10,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:15:10,909 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:15:10,910 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:15:10,910 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:15:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:11,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:15:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:11,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:15:11,945 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:15:11,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285213591]
[2022-02-24 01:15:11,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [285213591] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:15:11,946 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:15:11,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60
[2022-02-24 01:15:11,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104643389]
[2022-02-24 01:15:11,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:15:11,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states
[2022-02-24 01:15:11,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:15:11,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants.
[2022-02-24 01:15:11,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540
[2022-02-24 01:15:11,947 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand has 60 states, 60 states have (on average 2.0) internal successors, (120), 59 states have internal predecessors, (120), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:13,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:15:13,249 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions.
[2022-02-24 01:15:13,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2022-02-24 01:15:13,249 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.0) internal successors, (120), 59 states have internal predecessors, (120), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 124
[2022-02-24 01:15:13,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:15:13,250 INFO L225 Difference]: With dead ends: 134
[2022-02-24 01:15:13,250 INFO L226 Difference]: Without dead ends: 128
[2022-02-24 01:15:13,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=5133, Invalid=8439, Unknown=0, NotChecked=0, Total=13572
[2022-02-24 01:15:13,251 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 122 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:15:13,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 44 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:15:13,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states.
[2022-02-24 01:15:13,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127.
[2022-02-24 01:15:13,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 122 states have (on average 1.0081967213114753) internal successors, (123), 122 states have internal predecessors, (123), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:13,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions.
[2022-02-24 01:15:13,282 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124
[2022-02-24 01:15:13,282 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:15:13,282 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions.
[2022-02-24 01:15:13,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.0) internal successors, (120), 59 states have internal predecessors, (120), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:13,283 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions.
[2022-02-24 01:15:13,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127
[2022-02-24 01:15:13,283 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:15:13,283 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:15:13,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57
[2022-02-24 01:15:13,283 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:15:13,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:15:13,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1615753652, now seen corresponding path program 57 times
[2022-02-24 01:15:13,284 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:15:13,284 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055362144]
[2022-02-24 01:15:13,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:15:13,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:15:13,288 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:15:13,288 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:15:13,288 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:15:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:14,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:15:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:14,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:15:14,378 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:15:14,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055362144]
[2022-02-24 01:15:14,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1055362144] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:15:14,379 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:15:14,379 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61
[2022-02-24 01:15:14,379 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193985939]
[2022-02-24 01:15:14,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:15:14,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states
[2022-02-24 01:15:14,379 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:15:14,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants.
[2022-02-24 01:15:14,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660
[2022-02-24 01:15:14,381 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand has 61 states, 61 states have (on average 2.0) internal successors, (122), 60 states have internal predecessors, (122), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:15,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:15:15,733 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions.
[2022-02-24 01:15:15,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states.
[2022-02-24 01:15:15,733 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.0) internal successors, (122), 60 states have internal predecessors, (122), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126
[2022-02-24 01:15:15,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:15:15,734 INFO L225 Difference]: With dead ends: 136
[2022-02-24 01:15:15,734 INFO L226 Difference]: Without dead ends: 130
[2022-02-24 01:15:15,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=5310, Invalid=8732, Unknown=0, NotChecked=0, Total=14042
[2022-02-24 01:15:15,735 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 124 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:15:15,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 39 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:15:15,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states.
[2022-02-24 01:15:15,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129.
[2022-02-24 01:15:15,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 124 states have (on average 1.0080645161290323) internal successors, (125), 124 states have internal predecessors, (125), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:15,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions.
[2022-02-24 01:15:15,758 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126
[2022-02-24 01:15:15,758 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:15:15,758 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions.
[2022-02-24 01:15:15,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.0) internal successors, (122), 60 states have internal predecessors, (122), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:15,758 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions.
[2022-02-24 01:15:15,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129
[2022-02-24 01:15:15,758 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:15:15,759 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:15:15,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58
[2022-02-24 01:15:15,759 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:15:15,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:15:15,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1164814190, now seen corresponding path program 58 times
[2022-02-24 01:15:15,759 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:15:15,759 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126327276]
[2022-02-24 01:15:15,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:15:15,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:15:15,763 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:15:15,763 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:15:15,763 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:15:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:16,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:15:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:16,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:15:16,863 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:15:16,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126327276]
[2022-02-24 01:15:16,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2126327276] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:15:16,863 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:15:16,863 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62
[2022-02-24 01:15:16,863 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88961565]
[2022-02-24 01:15:16,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:15:16,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states
[2022-02-24 01:15:16,863 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:15:16,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants.
[2022-02-24 01:15:16,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782
[2022-02-24 01:15:16,865 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand has 62 states, 62 states have (on average 2.0) internal successors, (124), 61 states have internal predecessors, (124), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:18,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:15:18,296 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions.
[2022-02-24 01:15:18,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states.
[2022-02-24 01:15:18,296 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.0) internal successors, (124), 61 states have internal predecessors, (124), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128
[2022-02-24 01:15:18,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:15:18,311 INFO L225 Difference]: With dead ends: 138
[2022-02-24 01:15:18,311 INFO L226 Difference]: Without dead ends: 132
[2022-02-24 01:15:18,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=5490, Invalid=9030, Unknown=0, NotChecked=0, Total=14520
[2022-02-24 01:15:18,313 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 126 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:15:18,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 39 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:15:18,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states.
[2022-02-24 01:15:18,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131.
[2022-02-24 01:15:18,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.007936507936508) internal successors, (127), 126 states have internal predecessors, (127), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:18,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions.
[2022-02-24 01:15:18,336 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128
[2022-02-24 01:15:18,336 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:15:18,336 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions.
[2022-02-24 01:15:18,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.0) internal successors, (124), 61 states have internal predecessors, (124), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:18,337 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions.
[2022-02-24 01:15:18,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131
[2022-02-24 01:15:18,337 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:15:18,337 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:15:18,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59
[2022-02-24 01:15:18,337 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:15:18,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:15:18,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1820852240, now seen corresponding path program 59 times
[2022-02-24 01:15:18,338 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:15:18,338 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886745416]
[2022-02-24 01:15:18,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:15:18,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:15:18,342 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:15:18,342 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:15:18,342 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:15:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:19,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:15:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:15:19,475 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:15:19,475 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886745416]
[2022-02-24 01:15:19,475 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1886745416] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:15:19,475 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:15:19,475 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63
[2022-02-24 01:15:19,475 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672430725]
[2022-02-24 01:15:19,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:15:19,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states
[2022-02-24 01:15:19,476 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:15:19,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants.
[2022-02-24 01:15:19,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906
[2022-02-24 01:15:19,477 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand has 63 states, 63 states have (on average 2.0) internal successors, (126), 62 states have internal predecessors, (126), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:20,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:15:20,921 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions.
[2022-02-24 01:15:20,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states.
[2022-02-24 01:15:20,922 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.0) internal successors, (126), 62 states have internal predecessors, (126), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 130
[2022-02-24 01:15:20,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:15:20,922 INFO L225 Difference]: With dead ends: 140
[2022-02-24 01:15:20,922 INFO L226 Difference]: Without dead ends: 134
[2022-02-24 01:15:20,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006
[2022-02-24 01:15:20,933 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 128 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:15:20,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 44 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:15:20,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states.
[2022-02-24 01:15:20,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133.
[2022-02-24 01:15:20,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 128 states have (on average 1.0078125) internal successors, (129), 128 states have internal predecessors, (129), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:20,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions.
[2022-02-24 01:15:20,961 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130
[2022-02-24 01:15:20,962 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:15:20,962 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions.
[2022-02-24 01:15:20,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.0) internal successors, (126), 62 states have internal predecessors, (126), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:20,962 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions.
[2022-02-24 01:15:20,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133
[2022-02-24 01:15:20,962 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:15:20,962 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:15:20,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60
[2022-02-24 01:15:20,963 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:15:20,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:15:20,963 INFO L85 PathProgramCache]: Analyzing trace with hash 913225778, now seen corresponding path program 60 times
[2022-02-24 01:15:20,963 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:15:20,963 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778050160]
[2022-02-24 01:15:20,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:15:20,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:15:20,967 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:15:20,967 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:15:20,967 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:15:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:22,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:15:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:22,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:15:22,188 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:15:22,188 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778050160]
[2022-02-24 01:15:22,189 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1778050160] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:15:22,189 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:15:22,189 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64
[2022-02-24 01:15:22,189 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141775665]
[2022-02-24 01:15:22,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:15:22,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states
[2022-02-24 01:15:22,189 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:15:22,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants.
[2022-02-24 01:15:22,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032
[2022-02-24 01:15:22,190 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand has 64 states, 64 states have (on average 2.0) internal successors, (128), 63 states have internal predecessors, (128), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:23,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:15:23,681 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions.
[2022-02-24 01:15:23,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states.
[2022-02-24 01:15:23,681 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.0) internal successors, (128), 63 states have internal predecessors, (128), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 132
[2022-02-24 01:15:23,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:15:23,682 INFO L225 Difference]: With dead ends: 142
[2022-02-24 01:15:23,682 INFO L226 Difference]: Without dead ends: 136
[2022-02-24 01:15:23,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1890 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=5859, Invalid=9641, Unknown=0, NotChecked=0, Total=15500
[2022-02-24 01:15:23,683 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 130 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:15:23,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 34 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:15:23,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states.
[2022-02-24 01:15:23,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135.
[2022-02-24 01:15:23,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 130 states have (on average 1.0076923076923077) internal successors, (131), 130 states have internal predecessors, (131), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:23,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions.
[2022-02-24 01:15:23,708 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132
[2022-02-24 01:15:23,709 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:15:23,709 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions.
[2022-02-24 01:15:23,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.0) internal successors, (128), 63 states have internal predecessors, (128), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:23,709 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions.
[2022-02-24 01:15:23,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135
[2022-02-24 01:15:23,709 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:15:23,709 INFO L514 BasicCegarLoop]: trace histogram [61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:15:23,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61
[2022-02-24 01:15:23,709 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:15:23,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:15:23,710 INFO L85 PathProgramCache]: Analyzing trace with hash 562556884, now seen corresponding path program 61 times
[2022-02-24 01:15:23,710 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:15:23,710 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270060283]
[2022-02-24 01:15:23,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:15:23,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:15:23,714 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:15:23,714 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:15:23,714 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:15:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:24,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:15:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:15:24,953 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:15:24,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270060283]
[2022-02-24 01:15:24,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [270060283] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:15:24,953 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:15:24,953 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65
[2022-02-24 01:15:24,954 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304200976]
[2022-02-24 01:15:24,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:15:24,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states
[2022-02-24 01:15:24,954 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:15:24,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants.
[2022-02-24 01:15:24,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160
[2022-02-24 01:15:24,955 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand has 65 states, 65 states have (on average 2.0) internal successors, (130), 64 states have internal predecessors, (130), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:26,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:15:26,567 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions.
[2022-02-24 01:15:26,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states.
[2022-02-24 01:15:26,567 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.0) internal successors, (130), 64 states have internal predecessors, (130), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 134
[2022-02-24 01:15:26,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:15:26,568 INFO L225 Difference]: With dead ends: 144
[2022-02-24 01:15:26,568 INFO L226 Difference]: Without dead ends: 138
[2022-02-24 01:15:26,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1952 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=6048, Invalid=9954, Unknown=0, NotChecked=0, Total=16002
[2022-02-24 01:15:26,569 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 132 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:15:26,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 29 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:15:26,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states.
[2022-02-24 01:15:26,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137.
[2022-02-24 01:15:26,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 132 states have (on average 1.0075757575757576) internal successors, (133), 132 states have internal predecessors, (133), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:26,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions.
[2022-02-24 01:15:26,595 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134
[2022-02-24 01:15:26,595 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:15:26,596 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions.
[2022-02-24 01:15:26,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.0) internal successors, (130), 64 states have internal predecessors, (130), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:26,596 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions.
[2022-02-24 01:15:26,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137
[2022-02-24 01:15:26,596 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:15:26,596 INFO L514 BasicCegarLoop]: trace histogram [62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:15:26,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62
[2022-02-24 01:15:26,596 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:15:26,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:15:26,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1422801162, now seen corresponding path program 62 times
[2022-02-24 01:15:26,597 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:15:26,597 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582032478]
[2022-02-24 01:15:26,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:15:26,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:15:26,601 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:15:26,601 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:15:26,601 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:15:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:27,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:15:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:27,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:15:27,916 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:15:27,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582032478]
[2022-02-24 01:15:27,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [582032478] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:15:27,916 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:15:27,916 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66
[2022-02-24 01:15:27,916 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139534398]
[2022-02-24 01:15:27,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:15:27,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states
[2022-02-24 01:15:27,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:15:27,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants.
[2022-02-24 01:15:27,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290
[2022-02-24 01:15:27,920 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand has 66 states, 66 states have (on average 2.0) internal successors, (132), 65 states have internal predecessors, (132), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:29,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:15:29,465 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions.
[2022-02-24 01:15:29,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states.
[2022-02-24 01:15:29,465 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0) internal successors, (132), 65 states have internal predecessors, (132), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 136
[2022-02-24 01:15:29,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:15:29,466 INFO L225 Difference]: With dead ends: 146
[2022-02-24 01:15:29,466 INFO L226 Difference]: Without dead ends: 140
[2022-02-24 01:15:29,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=6240, Invalid=10272, Unknown=0, NotChecked=0, Total=16512
[2022-02-24 01:15:29,468 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 134 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:15:29,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 59 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:15:29,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states.
[2022-02-24 01:15:29,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139.
[2022-02-24 01:15:29,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 134 states have (on average 1.007462686567164) internal successors, (135), 134 states have internal predecessors, (135), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:29,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions.
[2022-02-24 01:15:29,496 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136
[2022-02-24 01:15:29,496 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:15:29,496 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions.
[2022-02-24 01:15:29,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0) internal successors, (132), 65 states have internal predecessors, (132), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:29,496 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions.
[2022-02-24 01:15:29,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139
[2022-02-24 01:15:29,497 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:15:29,497 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:15:29,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63
[2022-02-24 01:15:29,497 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:15:29,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:15:29,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1908563352, now seen corresponding path program 63 times
[2022-02-24 01:15:29,497 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:15:29,497 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211336262]
[2022-02-24 01:15:29,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:15:29,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:15:29,502 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:15:29,502 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:15:29,502 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:15:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:30,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:15:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:15:30,837 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:15:30,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211336262]
[2022-02-24 01:15:30,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [211336262] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:15:30,837 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:15:30,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67
[2022-02-24 01:15:30,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262167706]
[2022-02-24 01:15:30,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:15:30,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states
[2022-02-24 01:15:30,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:15:30,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants.
[2022-02-24 01:15:30,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422
[2022-02-24 01:15:30,839 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand has 67 states, 67 states have (on average 2.0) internal successors, (134), 66 states have internal predecessors, (134), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:32,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:15:32,544 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions.
[2022-02-24 01:15:32,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states.
[2022-02-24 01:15:32,545 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.0) internal successors, (134), 66 states have internal predecessors, (134), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138
[2022-02-24 01:15:32,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:15:32,545 INFO L225 Difference]: With dead ends: 148
[2022-02-24 01:15:32,545 INFO L226 Difference]: Without dead ends: 142
[2022-02-24 01:15:32,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2079 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030
[2022-02-24 01:15:32,546 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 136 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:15:32,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 44 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:15:32,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states.
[2022-02-24 01:15:32,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141.
[2022-02-24 01:15:32,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 136 states have (on average 1.0073529411764706) internal successors, (137), 136 states have internal predecessors, (137), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions.
[2022-02-24 01:15:32,574 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138
[2022-02-24 01:15:32,574 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:15:32,574 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions.
[2022-02-24 01:15:32,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.0) internal successors, (134), 66 states have internal predecessors, (134), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:32,574 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions.
[2022-02-24 01:15:32,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141
[2022-02-24 01:15:32,575 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:15:32,575 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:15:32,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64
[2022-02-24 01:15:32,575 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:15:32,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:15:32,575 INFO L85 PathProgramCache]: Analyzing trace with hash -695741510, now seen corresponding path program 64 times
[2022-02-24 01:15:32,575 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:15:32,575 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929341745]
[2022-02-24 01:15:32,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:15:32,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:15:32,580 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:15:32,580 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:15:32,580 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:15:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:33,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:15:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:33,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:15:33,865 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:15:33,866 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929341745]
[2022-02-24 01:15:33,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1929341745] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:15:33,866 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:15:33,866 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68
[2022-02-24 01:15:33,866 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625598060]
[2022-02-24 01:15:33,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:15:33,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states
[2022-02-24 01:15:33,866 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:15:33,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants.
[2022-02-24 01:15:33,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556
[2022-02-24 01:15:33,868 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand has 68 states, 68 states have (on average 2.0) internal successors, (136), 67 states have internal predecessors, (136), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:35,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:15:35,496 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions.
[2022-02-24 01:15:35,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states.
[2022-02-24 01:15:35,496 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.0) internal successors, (136), 67 states have internal predecessors, (136), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 140
[2022-02-24 01:15:35,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:15:35,497 INFO L225 Difference]: With dead ends: 150
[2022-02-24 01:15:35,497 INFO L226 Difference]: Without dead ends: 144
[2022-02-24 01:15:35,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=6633, Invalid=10923, Unknown=0, NotChecked=0, Total=17556
[2022-02-24 01:15:35,498 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 138 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:15:35,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 59 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:15:35,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states.
[2022-02-24 01:15:35,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143.
[2022-02-24 01:15:35,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 138 states have (on average 1.0072463768115942) internal successors, (139), 138 states have internal predecessors, (139), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:35,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions.
[2022-02-24 01:15:35,526 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140
[2022-02-24 01:15:35,526 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:15:35,526 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions.
[2022-02-24 01:15:35,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.0) internal successors, (136), 67 states have internal predecessors, (136), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:35,526 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions.
[2022-02-24 01:15:35,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2022-02-24 01:15:35,527 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:15:35,527 INFO L514 BasicCegarLoop]: trace histogram [65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:15:35,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65
[2022-02-24 01:15:35,527 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:15:35,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:15:35,527 INFO L85 PathProgramCache]: Analyzing trace with hash 533219676, now seen corresponding path program 65 times
[2022-02-24 01:15:35,527 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:15:35,527 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587425183]
[2022-02-24 01:15:35,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:15:35,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:15:35,534 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:15:35,534 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:15:35,534 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:15:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:36,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:15:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:36,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:15:36,912 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:15:36,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587425183]
[2022-02-24 01:15:36,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1587425183] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:15:36,912 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:15:36,912 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69
[2022-02-24 01:15:36,912 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279981404]
[2022-02-24 01:15:36,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:15:36,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states
[2022-02-24 01:15:36,913 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:15:36,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants.
[2022-02-24 01:15:36,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692
[2022-02-24 01:15:36,913 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand has 69 states, 69 states have (on average 2.0) internal successors, (138), 68 states have internal predecessors, (138), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:38,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:15:38,591 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions.
[2022-02-24 01:15:38,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states.
[2022-02-24 01:15:38,591 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.0) internal successors, (138), 68 states have internal predecessors, (138), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142
[2022-02-24 01:15:38,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:15:38,592 INFO L225 Difference]: With dead ends: 152
[2022-02-24 01:15:38,592 INFO L226 Difference]: Without dead ends: 146
[2022-02-24 01:15:38,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=6834, Invalid=11256, Unknown=0, NotChecked=0, Total=18090
[2022-02-24 01:15:38,596 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 140 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:15:38,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 49 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:15:38,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states.
[2022-02-24 01:15:38,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145.
[2022-02-24 01:15:38,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 140 states have (on average 1.0071428571428571) internal successors, (141), 140 states have internal predecessors, (141), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:38,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions.
[2022-02-24 01:15:38,632 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142
[2022-02-24 01:15:38,632 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:15:38,632 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions.
[2022-02-24 01:15:38,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.0) internal successors, (138), 68 states have internal predecessors, (138), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:38,632 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions.
[2022-02-24 01:15:38,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145
[2022-02-24 01:15:38,633 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:15:38,633 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:15:38,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66
[2022-02-24 01:15:38,633 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:15:38,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:15:38,633 INFO L85 PathProgramCache]: Analyzing trace with hash 448913022, now seen corresponding path program 66 times
[2022-02-24 01:15:38,633 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:15:38,633 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885596727]
[2022-02-24 01:15:38,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:15:38,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:15:38,638 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:15:38,638 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:15:38,638 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:15:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:40,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:15:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:40,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:15:40,136 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:15:40,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885596727]
[2022-02-24 01:15:40,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [885596727] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:15:40,136 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:15:40,136 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70
[2022-02-24 01:15:40,137 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675054183]
[2022-02-24 01:15:40,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:15:40,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states
[2022-02-24 01:15:40,137 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:15:40,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants.
[2022-02-24 01:15:40,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830
[2022-02-24 01:15:40,139 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand has 70 states, 70 states have (on average 2.0) internal successors, (140), 69 states have internal predecessors, (140), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:41,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:15:41,862 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions.
[2022-02-24 01:15:41,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states.
[2022-02-24 01:15:41,862 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.0) internal successors, (140), 69 states have internal predecessors, (140), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 144
[2022-02-24 01:15:41,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:15:41,863 INFO L225 Difference]: With dead ends: 154
[2022-02-24 01:15:41,863 INFO L226 Difference]: Without dead ends: 148
[2022-02-24 01:15:41,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=7038, Invalid=11594, Unknown=0, NotChecked=0, Total=18632
[2022-02-24 01:15:41,865 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 142 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:15:41,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 49 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:15:41,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states.
[2022-02-24 01:15:41,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147.
[2022-02-24 01:15:41,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 142 states have (on average 1.0070422535211268) internal successors, (143), 142 states have internal predecessors, (143), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:41,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions.
[2022-02-24 01:15:41,894 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144
[2022-02-24 01:15:41,895 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:15:41,895 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions.
[2022-02-24 01:15:41,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.0) internal successors, (140), 69 states have internal predecessors, (140), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:41,895 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions.
[2022-02-24 01:15:41,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2022-02-24 01:15:41,895 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:15:41,895 INFO L514 BasicCegarLoop]: trace histogram [67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:15:41,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67
[2022-02-24 01:15:41,895 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:15:41,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:15:41,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1034597152, now seen corresponding path program 67 times
[2022-02-24 01:15:41,896 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:15:41,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691634232]
[2022-02-24 01:15:41,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:15:41,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:15:41,900 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:15:41,900 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:15:41,900 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:15:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:43,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:15:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:43,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:15:43,373 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:15:43,373 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691634232]
[2022-02-24 01:15:43,373 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [691634232] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:15:43,373 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:15:43,373 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71
[2022-02-24 01:15:43,374 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309193496]
[2022-02-24 01:15:43,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:15:43,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states
[2022-02-24 01:15:43,374 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:15:43,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants.
[2022-02-24 01:15:43,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970
[2022-02-24 01:15:43,375 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand has 71 states, 71 states have (on average 2.0) internal successors, (142), 70 states have internal predecessors, (142), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:45,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:15:45,174 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions.
[2022-02-24 01:15:45,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states.
[2022-02-24 01:15:45,175 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.0) internal successors, (142), 70 states have internal predecessors, (142), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 146
[2022-02-24 01:15:45,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:15:45,175 INFO L225 Difference]: With dead ends: 156
[2022-02-24 01:15:45,175 INFO L226 Difference]: Without dead ends: 150
[2022-02-24 01:15:45,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182
[2022-02-24 01:15:45,176 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 144 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:15:45,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 39 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:15:45,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states.
[2022-02-24 01:15:45,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149.
[2022-02-24 01:15:45,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 144 states have (on average 1.0069444444444444) internal successors, (145), 144 states have internal predecessors, (145), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:45,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions.
[2022-02-24 01:15:45,207 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146
[2022-02-24 01:15:45,207 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:15:45,207 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions.
[2022-02-24 01:15:45,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.0) internal successors, (142), 70 states have internal predecessors, (142), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:45,207 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions.
[2022-02-24 01:15:45,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149
[2022-02-24 01:15:45,207 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:15:45,208 INFO L514 BasicCegarLoop]: trace histogram [68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:15:45,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68
[2022-02-24 01:15:45,208 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:15:45,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:15:45,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1236330306, now seen corresponding path program 68 times
[2022-02-24 01:15:45,209 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:15:45,209 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210851395]
[2022-02-24 01:15:45,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:15:45,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:15:45,213 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:15:45,213 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:15:45,213 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:15:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:46,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:15:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:46,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:15:46,692 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:15:46,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210851395]
[2022-02-24 01:15:46,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1210851395] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:15:46,692 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:15:46,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72
[2022-02-24 01:15:46,692 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475723441]
[2022-02-24 01:15:46,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:15:46,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states
[2022-02-24 01:15:46,692 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:15:46,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants.
[2022-02-24 01:15:46,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112
[2022-02-24 01:15:46,694 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand has 72 states, 72 states have (on average 2.0) internal successors, (144), 71 states have internal predecessors, (144), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:48,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:15:48,649 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions.
[2022-02-24 01:15:48,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states.
[2022-02-24 01:15:48,649 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0) internal successors, (144), 71 states have internal predecessors, (144), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 148
[2022-02-24 01:15:48,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:15:48,650 INFO L225 Difference]: With dead ends: 158
[2022-02-24 01:15:48,650 INFO L226 Difference]: Without dead ends: 152
[2022-02-24 01:15:48,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=7455, Invalid=12285, Unknown=0, NotChecked=0, Total=19740
[2022-02-24 01:15:48,652 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 146 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:15:48,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 34 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:15:48,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states.
[2022-02-24 01:15:48,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151.
[2022-02-24 01:15:48,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 146 states have (on average 1.0068493150684932) internal successors, (147), 146 states have internal predecessors, (147), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:48,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions.
[2022-02-24 01:15:48,688 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148
[2022-02-24 01:15:48,689 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:15:48,689 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions.
[2022-02-24 01:15:48,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.0) internal successors, (144), 71 states have internal predecessors, (144), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:48,689 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions.
[2022-02-24 01:15:48,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151
[2022-02-24 01:15:48,689 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:15:48,690 INFO L514 BasicCegarLoop]: trace histogram [69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:15:48,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69
[2022-02-24 01:15:48,691 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:15:48,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:15:48,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1828362980, now seen corresponding path program 69 times
[2022-02-24 01:15:48,691 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:15:48,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016405489]
[2022-02-24 01:15:48,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:15:48,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:15:48,697 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:15:48,697 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:15:48,697 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:15:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:50,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:15:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:50,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:15:50,178 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:15:50,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016405489]
[2022-02-24 01:15:50,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2016405489] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:15:50,178 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:15:50,178 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73
[2022-02-24 01:15:50,178 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533047196]
[2022-02-24 01:15:50,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:15:50,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states
[2022-02-24 01:15:50,187 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:15:50,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants.
[2022-02-24 01:15:50,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256
[2022-02-24 01:15:50,188 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand has 73 states, 73 states have (on average 2.0) internal successors, (146), 72 states have internal predecessors, (146), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:52,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:15:52,066 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions.
[2022-02-24 01:15:52,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states.
[2022-02-24 01:15:52,067 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.0) internal successors, (146), 72 states have internal predecessors, (146), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 150
[2022-02-24 01:15:52,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:15:52,067 INFO L225 Difference]: With dead ends: 160
[2022-02-24 01:15:52,067 INFO L226 Difference]: Without dead ends: 154
[2022-02-24 01:15:52,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2484 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=7668, Invalid=12638, Unknown=0, NotChecked=0, Total=20306
[2022-02-24 01:15:52,068 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 148 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:15:52,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 39 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:15:52,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states.
[2022-02-24 01:15:52,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153.
[2022-02-24 01:15:52,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 148 states have (on average 1.0067567567567568) internal successors, (149), 148 states have internal predecessors, (149), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:52,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions.
[2022-02-24 01:15:52,100 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150
[2022-02-24 01:15:52,100 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:15:52,100 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions.
[2022-02-24 01:15:52,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.0) internal successors, (146), 72 states have internal predecessors, (146), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:52,100 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions.
[2022-02-24 01:15:52,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153
[2022-02-24 01:15:52,101 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:15:52,101 INFO L514 BasicCegarLoop]: trace histogram [70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:15:52,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70
[2022-02-24 01:15:52,101 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:15:52,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:15:52,101 INFO L85 PathProgramCache]: Analyzing trace with hash -458887674, now seen corresponding path program 70 times
[2022-02-24 01:15:52,102 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:15:52,102 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319299997]
[2022-02-24 01:15:52,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:15:52,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:15:52,106 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:15:52,106 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:15:52,106 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:15:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:53,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:15:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:53,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:15:53,641 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:15:53,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319299997]
[2022-02-24 01:15:53,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1319299997] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:15:53,641 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:15:53,641 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74
[2022-02-24 01:15:53,641 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823007679]
[2022-02-24 01:15:53,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:15:53,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states
[2022-02-24 01:15:53,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:15:53,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants.
[2022-02-24 01:15:53,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402
[2022-02-24 01:15:53,643 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand has 74 states, 74 states have (on average 2.0) internal successors, (148), 73 states have internal predecessors, (148), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:55,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:15:55,576 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions.
[2022-02-24 01:15:55,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states.
[2022-02-24 01:15:55,576 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.0) internal successors, (148), 73 states have internal predecessors, (148), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 152
[2022-02-24 01:15:55,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:15:55,582 INFO L225 Difference]: With dead ends: 162
[2022-02-24 01:15:55,582 INFO L226 Difference]: Without dead ends: 156
[2022-02-24 01:15:55,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2555 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=7884, Invalid=12996, Unknown=0, NotChecked=0, Total=20880
[2022-02-24 01:15:55,584 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 150 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:15:55,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 34 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:15:55,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states.
[2022-02-24 01:15:55,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155.
[2022-02-24 01:15:55,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 150 states have (on average 1.0066666666666666) internal successors, (151), 150 states have internal predecessors, (151), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:55,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions.
[2022-02-24 01:15:55,623 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152
[2022-02-24 01:15:55,623 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:15:55,623 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions.
[2022-02-24 01:15:55,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.0) internal successors, (148), 73 states have internal predecessors, (148), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:55,623 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions.
[2022-02-24 01:15:55,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155
[2022-02-24 01:15:55,624 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:15:55,624 INFO L514 BasicCegarLoop]: trace histogram [71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:15:55,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71
[2022-02-24 01:15:55,624 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:15:55,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:15:55,624 INFO L85 PathProgramCache]: Analyzing trace with hash 516489384, now seen corresponding path program 71 times
[2022-02-24 01:15:55,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:15:55,625 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183115648]
[2022-02-24 01:15:55,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:15:55,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:15:55,629 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:15:55,629 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:15:55,629 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:15:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:57,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:15:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:15:57,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:15:57,215 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:15:57,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183115648]
[2022-02-24 01:15:57,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1183115648] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:15:57,215 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:15:57,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75
[2022-02-24 01:15:57,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618919824]
[2022-02-24 01:15:57,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:15:57,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states
[2022-02-24 01:15:57,216 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:15:57,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants.
[2022-02-24 01:15:57,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550
[2022-02-24 01:15:57,217 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand has 75 states, 75 states have (on average 2.0) internal successors, (150), 74 states have internal predecessors, (150), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:59,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:15:59,172 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions.
[2022-02-24 01:15:59,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states.
[2022-02-24 01:15:59,172 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.0) internal successors, (150), 74 states have internal predecessors, (150), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 154
[2022-02-24 01:15:59,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:15:59,173 INFO L225 Difference]: With dead ends: 164
[2022-02-24 01:15:59,173 INFO L226 Difference]: Without dead ends: 158
[2022-02-24 01:15:59,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2627 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462
[2022-02-24 01:15:59,175 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 152 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:15:59,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 54 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:15:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states.
[2022-02-24 01:15:59,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157.
[2022-02-24 01:15:59,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 152 states have (on average 1.006578947368421) internal successors, (153), 152 states have internal predecessors, (153), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:59,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions.
[2022-02-24 01:15:59,221 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154
[2022-02-24 01:15:59,221 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:15:59,221 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions.
[2022-02-24 01:15:59,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.0) internal successors, (150), 74 states have internal predecessors, (150), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:15:59,221 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions.
[2022-02-24 01:15:59,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2022-02-24 01:15:59,222 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:15:59,222 INFO L514 BasicCegarLoop]: trace histogram [72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:15:59,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72
[2022-02-24 01:15:59,222 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:15:59,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:15:59,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1550971594, now seen corresponding path program 72 times
[2022-02-24 01:15:59,223 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:15:59,223 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617785035]
[2022-02-24 01:15:59,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:15:59,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:15:59,229 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:15:59,229 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:15:59,229 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:15:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:00,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:16:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:00,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:16:00,850 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:16:00,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617785035]
[2022-02-24 01:16:00,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [617785035] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:16:00,850 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:16:00,850 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76
[2022-02-24 01:16:00,850 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880481263]
[2022-02-24 01:16:00,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:16:00,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states
[2022-02-24 01:16:00,851 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:16:00,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants.
[2022-02-24 01:16:00,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700
[2022-02-24 01:16:00,852 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand has 76 states, 76 states have (on average 2.0) internal successors, (152), 75 states have internal predecessors, (152), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:02,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:16:02,902 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions.
[2022-02-24 01:16:02,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states.
[2022-02-24 01:16:02,903 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.0) internal successors, (152), 75 states have internal predecessors, (152), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 156
[2022-02-24 01:16:02,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:16:02,903 INFO L225 Difference]: With dead ends: 166
[2022-02-24 01:16:02,903 INFO L226 Difference]: Without dead ends: 160
[2022-02-24 01:16:02,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=8325, Invalid=13727, Unknown=0, NotChecked=0, Total=22052
[2022-02-24 01:16:02,905 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 154 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:16:02,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 29 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:16:02,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states.
[2022-02-24 01:16:02,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159.
[2022-02-24 01:16:02,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 154 states have (on average 1.0064935064935066) internal successors, (155), 154 states have internal predecessors, (155), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:02,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions.
[2022-02-24 01:16:02,940 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156
[2022-02-24 01:16:02,940 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:16:02,940 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions.
[2022-02-24 01:16:02,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.0) internal successors, (152), 75 states have internal predecessors, (152), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:02,940 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions.
[2022-02-24 01:16:02,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159
[2022-02-24 01:16:02,941 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:16:02,941 INFO L514 BasicCegarLoop]: trace histogram [73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:16:02,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73
[2022-02-24 01:16:02,941 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:16:02,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:16:02,942 INFO L85 PathProgramCache]: Analyzing trace with hash -744037268, now seen corresponding path program 73 times
[2022-02-24 01:16:02,942 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:16:02,942 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33842398]
[2022-02-24 01:16:02,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:16:02,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:16:02,947 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:16:02,947 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:16:02,947 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:16:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:04,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:16:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:04,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:16:04,658 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:16:04,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33842398]
[2022-02-24 01:16:04,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [33842398] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:16:04,658 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:16:04,658 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77
[2022-02-24 01:16:04,658 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384557552]
[2022-02-24 01:16:04,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:16:04,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states
[2022-02-24 01:16:04,659 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:16:04,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants.
[2022-02-24 01:16:04,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852
[2022-02-24 01:16:04,660 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand has 77 states, 77 states have (on average 2.0) internal successors, (154), 76 states have internal predecessors, (154), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:06,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:16:06,823 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions.
[2022-02-24 01:16:06,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states.
[2022-02-24 01:16:06,824 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.0) internal successors, (154), 76 states have internal predecessors, (154), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 158
[2022-02-24 01:16:06,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:16:06,824 INFO L225 Difference]: With dead ends: 168
[2022-02-24 01:16:06,824 INFO L226 Difference]: Without dead ends: 162
[2022-02-24 01:16:06,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2774 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=8550, Invalid=14100, Unknown=0, NotChecked=0, Total=22650
[2022-02-24 01:16:06,825 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 156 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:16:06,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 39 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:16:06,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states.
[2022-02-24 01:16:06,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161.
[2022-02-24 01:16:06,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 156 states have (on average 1.0064102564102564) internal successors, (157), 156 states have internal predecessors, (157), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:06,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions.
[2022-02-24 01:16:06,862 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158
[2022-02-24 01:16:06,862 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:16:06,862 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions.
[2022-02-24 01:16:06,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.0) internal successors, (154), 76 states have internal predecessors, (154), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:06,862 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions.
[2022-02-24 01:16:06,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161
[2022-02-24 01:16:06,862 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:16:06,863 INFO L514 BasicCegarLoop]: trace histogram [74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:16:06,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74
[2022-02-24 01:16:06,863 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:16:06,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:16:06,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1365636494, now seen corresponding path program 74 times
[2022-02-24 01:16:06,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:16:06,864 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223797582]
[2022-02-24 01:16:06,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:16:06,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:16:06,869 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:16:06,869 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:16:06,869 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:16:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:08,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:16:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:08,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:16:08,588 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:16:08,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223797582]
[2022-02-24 01:16:08,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1223797582] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:16:08,588 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:16:08,588 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78
[2022-02-24 01:16:08,588 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726105476]
[2022-02-24 01:16:08,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:16:08,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states
[2022-02-24 01:16:08,589 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:16:08,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants.
[2022-02-24 01:16:08,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006
[2022-02-24 01:16:08,589 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand has 78 states, 78 states have (on average 2.0) internal successors, (156), 77 states have internal predecessors, (156), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:10,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:16:10,802 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions.
[2022-02-24 01:16:10,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states.
[2022-02-24 01:16:10,802 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.0) internal successors, (156), 77 states have internal predecessors, (156), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 160
[2022-02-24 01:16:10,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:16:10,810 INFO L225 Difference]: With dead ends: 170
[2022-02-24 01:16:10,810 INFO L226 Difference]: Without dead ends: 164
[2022-02-24 01:16:10,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2849 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=8778, Invalid=14478, Unknown=0, NotChecked=0, Total=23256
[2022-02-24 01:16:10,811 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 158 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:16:10,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 54 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:16:10,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states.
[2022-02-24 01:16:10,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163.
[2022-02-24 01:16:10,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 158 states have (on average 1.0063291139240507) internal successors, (159), 158 states have internal predecessors, (159), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:10,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions.
[2022-02-24 01:16:10,861 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160
[2022-02-24 01:16:10,861 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:16:10,861 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions.
[2022-02-24 01:16:10,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.0) internal successors, (156), 77 states have internal predecessors, (156), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:10,861 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions.
[2022-02-24 01:16:10,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163
[2022-02-24 01:16:10,862 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:16:10,862 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:16:10,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75
[2022-02-24 01:16:10,862 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:16:10,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:16:10,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1537558064, now seen corresponding path program 75 times
[2022-02-24 01:16:10,862 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:16:10,862 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350334401]
[2022-02-24 01:16:10,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:16:10,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:16:10,871 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:16:10,871 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:16:10,871 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:16:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:12,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:16:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:16:12,636 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:16:12,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350334401]
[2022-02-24 01:16:12,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1350334401] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:16:12,636 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:16:12,637 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79
[2022-02-24 01:16:12,637 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668428518]
[2022-02-24 01:16:12,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:16:12,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states
[2022-02-24 01:16:12,637 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:16:12,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants.
[2022-02-24 01:16:12,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162
[2022-02-24 01:16:12,639 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand has 79 states, 79 states have (on average 2.0) internal successors, (158), 78 states have internal predecessors, (158), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:14,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:16:14,897 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions.
[2022-02-24 01:16:14,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states.
[2022-02-24 01:16:14,897 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.0) internal successors, (158), 78 states have internal predecessors, (158), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 162
[2022-02-24 01:16:14,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:16:14,898 INFO L225 Difference]: With dead ends: 172
[2022-02-24 01:16:14,898 INFO L226 Difference]: Without dead ends: 166
[2022-02-24 01:16:14,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2925 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870
[2022-02-24 01:16:14,901 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 160 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:16:14,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 44 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:16:14,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states.
[2022-02-24 01:16:14,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165.
[2022-02-24 01:16:14,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 160 states have (on average 1.00625) internal successors, (161), 160 states have internal predecessors, (161), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:14,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions.
[2022-02-24 01:16:14,951 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162
[2022-02-24 01:16:14,952 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:16:14,952 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions.
[2022-02-24 01:16:14,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.0) internal successors, (158), 78 states have internal predecessors, (158), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:14,952 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions.
[2022-02-24 01:16:14,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165
[2022-02-24 01:16:14,952 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:16:14,952 INFO L514 BasicCegarLoop]: trace histogram [76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:16:14,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76
[2022-02-24 01:16:14,953 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:16:14,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:16:14,953 INFO L85 PathProgramCache]: Analyzing trace with hash -749537710, now seen corresponding path program 76 times
[2022-02-24 01:16:14,953 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:16:14,953 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166116456]
[2022-02-24 01:16:14,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:16:14,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:16:14,958 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:16:14,958 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:16:14,958 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:16:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:16,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:16:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:16,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:16:16,831 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:16:16,831 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166116456]
[2022-02-24 01:16:16,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1166116456] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:16:16,831 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:16:16,831 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80
[2022-02-24 01:16:16,831 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119506778]
[2022-02-24 01:16:16,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:16:16,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states
[2022-02-24 01:16:16,832 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:16:16,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants.
[2022-02-24 01:16:16,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320
[2022-02-24 01:16:16,834 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand has 80 states, 80 states have (on average 2.0) internal successors, (160), 79 states have internal predecessors, (160), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:19,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:16:19,261 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions.
[2022-02-24 01:16:19,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states.
[2022-02-24 01:16:19,261 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.0) internal successors, (160), 79 states have internal predecessors, (160), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 164
[2022-02-24 01:16:19,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:16:19,262 INFO L225 Difference]: With dead ends: 174
[2022-02-24 01:16:19,262 INFO L226 Difference]: Without dead ends: 168
[2022-02-24 01:16:19,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3002 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=9243, Invalid=15249, Unknown=0, NotChecked=0, Total=24492
[2022-02-24 01:16:19,264 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 162 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:16:19,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 24 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:16:19,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states.
[2022-02-24 01:16:19,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167.
[2022-02-24 01:16:19,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 162 states have (on average 1.0061728395061729) internal successors, (163), 162 states have internal predecessors, (163), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:19,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions.
[2022-02-24 01:16:19,308 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164
[2022-02-24 01:16:19,308 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:16:19,308 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions.
[2022-02-24 01:16:19,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.0) internal successors, (160), 79 states have internal predecessors, (160), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:19,309 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions.
[2022-02-24 01:16:19,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167
[2022-02-24 01:16:19,309 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:16:19,309 INFO L514 BasicCegarLoop]: trace histogram [77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:16:19,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77
[2022-02-24 01:16:19,309 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:16:19,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:16:19,310 INFO L85 PathProgramCache]: Analyzing trace with hash 374679028, now seen corresponding path program 77 times
[2022-02-24 01:16:19,310 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:16:19,310 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487107527]
[2022-02-24 01:16:19,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:16:19,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:16:19,315 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:16:19,315 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:16:19,315 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:16:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:21,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:16:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:21,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:16:21,157 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:16:21,157 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487107527]
[2022-02-24 01:16:21,157 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [487107527] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:16:21,157 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:16:21,157 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81
[2022-02-24 01:16:21,157 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120117158]
[2022-02-24 01:16:21,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:16:21,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states
[2022-02-24 01:16:21,158 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:16:21,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants.
[2022-02-24 01:16:21,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480
[2022-02-24 01:16:21,159 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand has 81 states, 81 states have (on average 2.0) internal successors, (162), 80 states have internal predecessors, (162), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:23,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:16:23,414 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions.
[2022-02-24 01:16:23,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states.
[2022-02-24 01:16:23,414 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.0) internal successors, (162), 80 states have internal predecessors, (162), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 166
[2022-02-24 01:16:23,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:16:23,415 INFO L225 Difference]: With dead ends: 176
[2022-02-24 01:16:23,415 INFO L226 Difference]: Without dead ends: 170
[2022-02-24 01:16:23,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=9480, Invalid=15642, Unknown=0, NotChecked=0, Total=25122
[2022-02-24 01:16:23,417 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 164 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:16:23,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 39 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:16:23,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states.
[2022-02-24 01:16:23,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169.
[2022-02-24 01:16:23,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 164 states have (on average 1.0060975609756098) internal successors, (165), 164 states have internal predecessors, (165), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions.
[2022-02-24 01:16:23,471 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166
[2022-02-24 01:16:23,471 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:16:23,471 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions.
[2022-02-24 01:16:23,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.0) internal successors, (162), 80 states have internal predecessors, (162), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:23,471 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions.
[2022-02-24 01:16:23,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169
[2022-02-24 01:16:23,472 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:16:23,472 INFO L514 BasicCegarLoop]: trace histogram [78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:16:23,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78
[2022-02-24 01:16:23,472 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:16:23,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:16:23,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1584794346, now seen corresponding path program 78 times
[2022-02-24 01:16:23,472 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:16:23,472 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985003980]
[2022-02-24 01:16:23,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:16:23,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:16:23,478 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:16:23,478 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:16:23,478 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:16:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:25,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:16:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:25,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:16:25,351 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:16:25,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985003980]
[2022-02-24 01:16:25,351 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1985003980] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:16:25,351 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:16:25,351 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82
[2022-02-24 01:16:25,351 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067906579]
[2022-02-24 01:16:25,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:16:25,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states
[2022-02-24 01:16:25,351 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:16:25,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants.
[2022-02-24 01:16:25,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642
[2022-02-24 01:16:25,353 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand has 82 states, 82 states have (on average 2.0) internal successors, (164), 81 states have internal predecessors, (164), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:27,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:16:27,686 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions.
[2022-02-24 01:16:27,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states.
[2022-02-24 01:16:27,687 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.0) internal successors, (164), 81 states have internal predecessors, (164), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 168
[2022-02-24 01:16:27,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:16:27,687 INFO L225 Difference]: With dead ends: 178
[2022-02-24 01:16:27,687 INFO L226 Difference]: Without dead ends: 172
[2022-02-24 01:16:27,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3159 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=9720, Invalid=16040, Unknown=0, NotChecked=0, Total=25760
[2022-02-24 01:16:27,690 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 166 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 01:16:27,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 49 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 01:16:27,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states.
[2022-02-24 01:16:27,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171.
[2022-02-24 01:16:27,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 166 states have (on average 1.0060240963855422) internal successors, (167), 166 states have internal predecessors, (167), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:27,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions.
[2022-02-24 01:16:27,742 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168
[2022-02-24 01:16:27,742 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:16:27,742 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions.
[2022-02-24 01:16:27,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.0) internal successors, (164), 81 states have internal predecessors, (164), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:27,743 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions.
[2022-02-24 01:16:27,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171
[2022-02-24 01:16:27,743 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:16:27,743 INFO L514 BasicCegarLoop]: trace histogram [79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:16:27,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79
[2022-02-24 01:16:27,743 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:16:27,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:16:27,744 INFO L85 PathProgramCache]: Analyzing trace with hash 851936184, now seen corresponding path program 79 times
[2022-02-24 01:16:27,744 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:16:27,744 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138255576]
[2022-02-24 01:16:27,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:16:27,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:16:27,749 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:16:27,749 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:16:27,749 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:16:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:29,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:16:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:16:29,683 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:16:29,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138255576]
[2022-02-24 01:16:29,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1138255576] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:16:29,683 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:16:29,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83
[2022-02-24 01:16:29,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698959291]
[2022-02-24 01:16:29,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:16:29,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states
[2022-02-24 01:16:29,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:16:29,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants.
[2022-02-24 01:16:29,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806
[2022-02-24 01:16:29,686 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand has 83 states, 83 states have (on average 2.0) internal successors, (166), 82 states have internal predecessors, (166), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:32,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:16:32,129 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions.
[2022-02-24 01:16:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states.
[2022-02-24 01:16:32,129 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.0) internal successors, (166), 82 states have internal predecessors, (166), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 170
[2022-02-24 01:16:32,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:16:32,130 INFO L225 Difference]: With dead ends: 180
[2022-02-24 01:16:32,130 INFO L226 Difference]: Without dead ends: 174
[2022-02-24 01:16:32,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3239 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406
[2022-02-24 01:16:32,132 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 168 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:16:32,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 44 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:16:32,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states.
[2022-02-24 01:16:32,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173.
[2022-02-24 01:16:32,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 168 states have (on average 1.005952380952381) internal successors, (169), 168 states have internal predecessors, (169), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:32,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions.
[2022-02-24 01:16:32,183 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170
[2022-02-24 01:16:32,183 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:16:32,183 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions.
[2022-02-24 01:16:32,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.0) internal successors, (166), 82 states have internal predecessors, (166), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:32,183 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions.
[2022-02-24 01:16:32,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173
[2022-02-24 01:16:32,184 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:16:32,184 INFO L514 BasicCegarLoop]: trace histogram [80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:16:32,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80
[2022-02-24 01:16:32,184 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:16:32,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:16:32,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1792799194, now seen corresponding path program 80 times
[2022-02-24 01:16:32,184 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:16:32,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100875440]
[2022-02-24 01:16:32,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:16:32,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:16:32,190 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:16:32,190 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:16:32,190 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:16:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:34,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:16:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:16:34,220 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:16:34,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100875440]
[2022-02-24 01:16:34,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2100875440] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:16:34,220 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:16:34,220 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84
[2022-02-24 01:16:34,220 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934951702]
[2022-02-24 01:16:34,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:16:34,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states
[2022-02-24 01:16:34,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:16:34,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants.
[2022-02-24 01:16:34,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972
[2022-02-24 01:16:34,223 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand has 84 states, 84 states have (on average 2.0) internal successors, (168), 83 states have internal predecessors, (168), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:36,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:16:36,693 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions.
[2022-02-24 01:16:36,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states.
[2022-02-24 01:16:36,693 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.0) internal successors, (168), 83 states have internal predecessors, (168), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 172
[2022-02-24 01:16:36,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:16:36,694 INFO L225 Difference]: With dead ends: 182
[2022-02-24 01:16:36,694 INFO L226 Difference]: Without dead ends: 176
[2022-02-24 01:16:36,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3320 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=10209, Invalid=16851, Unknown=0, NotChecked=0, Total=27060
[2022-02-24 01:16:36,695 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 170 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:16:36,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 44 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:16:36,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states.
[2022-02-24 01:16:36,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175.
[2022-02-24 01:16:36,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 170 states have (on average 1.0058823529411764) internal successors, (171), 170 states have internal predecessors, (171), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:36,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions.
[2022-02-24 01:16:36,739 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172
[2022-02-24 01:16:36,739 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:16:36,739 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions.
[2022-02-24 01:16:36,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.0) internal successors, (168), 83 states have internal predecessors, (168), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:36,739 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions.
[2022-02-24 01:16:36,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175
[2022-02-24 01:16:36,740 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:16:36,740 INFO L514 BasicCegarLoop]: trace histogram [81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:16:36,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81
[2022-02-24 01:16:36,740 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:16:36,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:16:36,740 INFO L85 PathProgramCache]: Analyzing trace with hash -275947652, now seen corresponding path program 81 times
[2022-02-24 01:16:36,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:16:36,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416832360]
[2022-02-24 01:16:36,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:16:36,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:16:36,746 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:16:36,746 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:16:36,746 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:16:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:38,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:16:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:16:38,858 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:16:38,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416832360]
[2022-02-24 01:16:38,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [416832360] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:16:38,859 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:16:38,859 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85
[2022-02-24 01:16:38,859 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308494609]
[2022-02-24 01:16:38,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:16:38,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states
[2022-02-24 01:16:38,859 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:16:38,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants.
[2022-02-24 01:16:38,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140
[2022-02-24 01:16:38,873 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand has 85 states, 85 states have (on average 2.0) internal successors, (170), 84 states have internal predecessors, (170), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:41,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:16:41,711 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions.
[2022-02-24 01:16:41,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states.
[2022-02-24 01:16:41,711 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.0) internal successors, (170), 84 states have internal predecessors, (170), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 174
[2022-02-24 01:16:41,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:16:41,712 INFO L225 Difference]: With dead ends: 184
[2022-02-24 01:16:41,712 INFO L226 Difference]: Without dead ends: 178
[2022-02-24 01:16:41,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3402 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=10458, Invalid=17264, Unknown=0, NotChecked=0, Total=27722
[2022-02-24 01:16:41,713 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 172 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:16:41,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 39 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:16:41,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states.
[2022-02-24 01:16:41,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177.
[2022-02-24 01:16:41,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 172 states have (on average 1.005813953488372) internal successors, (173), 172 states have internal predecessors, (173), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:41,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions.
[2022-02-24 01:16:41,761 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174
[2022-02-24 01:16:41,762 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:16:41,762 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions.
[2022-02-24 01:16:41,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.0) internal successors, (170), 84 states have internal predecessors, (170), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:41,762 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions.
[2022-02-24 01:16:41,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177
[2022-02-24 01:16:41,762 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:16:41,762 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:16:41,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82
[2022-02-24 01:16:41,763 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:16:41,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:16:41,763 INFO L85 PathProgramCache]: Analyzing trace with hash 228191390, now seen corresponding path program 82 times
[2022-02-24 01:16:41,763 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:16:41,763 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757782976]
[2022-02-24 01:16:41,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:16:41,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:16:41,769 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:16:41,769 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:16:41,769 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:16:41,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:44,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:16:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:44,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:16:44,055 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:16:44,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757782976]
[2022-02-24 01:16:44,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [757782976] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:16:44,055 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:16:44,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86
[2022-02-24 01:16:44,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217072911]
[2022-02-24 01:16:44,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:16:44,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states
[2022-02-24 01:16:44,055 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:16:44,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants.
[2022-02-24 01:16:44,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310
[2022-02-24 01:16:44,057 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand has 86 states, 86 states have (on average 2.0) internal successors, (172), 85 states have internal predecessors, (172), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:46,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:16:46,866 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions.
[2022-02-24 01:16:46,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states.
[2022-02-24 01:16:46,866 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.0) internal successors, (172), 85 states have internal predecessors, (172), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 176
[2022-02-24 01:16:46,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:16:46,867 INFO L225 Difference]: With dead ends: 186
[2022-02-24 01:16:46,867 INFO L226 Difference]: Without dead ends: 180
[2022-02-24 01:16:46,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=10710, Invalid=17682, Unknown=0, NotChecked=0, Total=28392
[2022-02-24 01:16:46,869 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 174 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:16:46,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 29 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:16:46,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states.
[2022-02-24 01:16:46,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179.
[2022-02-24 01:16:46,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 174 states have (on average 1.0057471264367817) internal successors, (175), 174 states have internal predecessors, (175), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:46,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions.
[2022-02-24 01:16:46,931 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176
[2022-02-24 01:16:46,931 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:16:46,931 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions.
[2022-02-24 01:16:46,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.0) internal successors, (172), 85 states have internal predecessors, (172), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:46,931 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions.
[2022-02-24 01:16:46,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179
[2022-02-24 01:16:46,932 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:16:46,932 INFO L514 BasicCegarLoop]: trace histogram [83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:16:46,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83
[2022-02-24 01:16:46,932 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:16:46,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:16:46,933 INFO L85 PathProgramCache]: Analyzing trace with hash -625493696, now seen corresponding path program 83 times
[2022-02-24 01:16:46,933 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:16:46,933 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161301033]
[2022-02-24 01:16:46,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:16:46,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:16:46,940 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:16:46,940 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:16:46,940 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:16:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:49,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:16:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:49,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:16:49,236 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:16:49,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161301033]
[2022-02-24 01:16:49,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1161301033] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:16:49,237 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:16:49,237 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87
[2022-02-24 01:16:49,237 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416693762]
[2022-02-24 01:16:49,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:16:49,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states
[2022-02-24 01:16:49,237 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:16:49,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants.
[2022-02-24 01:16:49,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482
[2022-02-24 01:16:49,239 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand has 87 states, 87 states have (on average 2.0) internal successors, (174), 86 states have internal predecessors, (174), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:52,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:16:52,190 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions.
[2022-02-24 01:16:52,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states.
[2022-02-24 01:16:52,191 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.0) internal successors, (174), 86 states have internal predecessors, (174), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 178
[2022-02-24 01:16:52,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:16:52,191 INFO L225 Difference]: With dead ends: 188
[2022-02-24 01:16:52,191 INFO L226 Difference]: Without dead ends: 182
[2022-02-24 01:16:52,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3569 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070
[2022-02-24 01:16:52,194 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 176 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:16:52,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 39 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:16:52,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states.
[2022-02-24 01:16:52,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181.
[2022-02-24 01:16:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 176 states have (on average 1.0056818181818181) internal successors, (177), 176 states have internal predecessors, (177), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:52,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions.
[2022-02-24 01:16:52,251 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178
[2022-02-24 01:16:52,251 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:16:52,251 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions.
[2022-02-24 01:16:52,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 2.0) internal successors, (174), 86 states have internal predecessors, (174), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:52,253 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions.
[2022-02-24 01:16:52,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181
[2022-02-24 01:16:52,254 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:16:52,254 INFO L514 BasicCegarLoop]: trace histogram [84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:16:52,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84
[2022-02-24 01:16:52,254 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:16:52,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:16:52,254 INFO L85 PathProgramCache]: Analyzing trace with hash -678107806, now seen corresponding path program 84 times
[2022-02-24 01:16:52,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:16:52,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913113721]
[2022-02-24 01:16:52,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:16:52,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:16:52,266 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:16:52,267 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:16:52,267 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:16:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:54,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:16:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:54,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:16:54,598 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:16:54,598 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913113721]
[2022-02-24 01:16:54,598 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [913113721] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:16:54,598 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:16:54,599 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88
[2022-02-24 01:16:54,599 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806169879]
[2022-02-24 01:16:54,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:16:54,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states
[2022-02-24 01:16:54,600 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:16:54,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants.
[2022-02-24 01:16:54,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656
[2022-02-24 01:16:54,602 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand has 88 states, 88 states have (on average 2.0) internal successors, (176), 87 states have internal predecessors, (176), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:57,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:16:57,538 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions.
[2022-02-24 01:16:57,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states.
[2022-02-24 01:16:57,539 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.0) internal successors, (176), 87 states have internal predecessors, (176), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 180
[2022-02-24 01:16:57,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:16:57,540 INFO L225 Difference]: With dead ends: 190
[2022-02-24 01:16:57,540 INFO L226 Difference]: Without dead ends: 184
[2022-02-24 01:16:57,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3654 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=11223, Invalid=18533, Unknown=0, NotChecked=0, Total=29756
[2022-02-24 01:16:57,541 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 178 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:16:57,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 54 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:16:57,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states.
[2022-02-24 01:16:57,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183.
[2022-02-24 01:16:57,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 178 states have (on average 1.0056179775280898) internal successors, (179), 178 states have internal predecessors, (179), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:57,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions.
[2022-02-24 01:16:57,588 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180
[2022-02-24 01:16:57,588 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:16:57,588 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions.
[2022-02-24 01:16:57,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.0) internal successors, (176), 87 states have internal predecessors, (176), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:16:57,589 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions.
[2022-02-24 01:16:57,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183
[2022-02-24 01:16:57,592 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:16:57,592 INFO L514 BasicCegarLoop]: trace histogram [85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:16:57,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85
[2022-02-24 01:16:57,593 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:16:57,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:16:57,593 INFO L85 PathProgramCache]: Analyzing trace with hash 299340036, now seen corresponding path program 85 times
[2022-02-24 01:16:57,593 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:16:57,593 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539849506]
[2022-02-24 01:16:57,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:16:57,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:16:57,600 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:16:57,601 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:16:57,601 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:16:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:59,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:16:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:16:59,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:16:59,893 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:16:59,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539849506]
[2022-02-24 01:16:59,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1539849506] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:16:59,893 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:16:59,893 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89
[2022-02-24 01:16:59,893 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611056387]
[2022-02-24 01:16:59,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:16:59,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states
[2022-02-24 01:16:59,894 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:16:59,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants.
[2022-02-24 01:16:59,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832
[2022-02-24 01:16:59,895 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand has 89 states, 89 states have (on average 2.0) internal successors, (178), 88 states have internal predecessors, (178), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:02,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:17:02,653 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions.
[2022-02-24 01:17:02,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states.
[2022-02-24 01:17:02,654 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.0) internal successors, (178), 88 states have internal predecessors, (178), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 182
[2022-02-24 01:17:02,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:17:02,655 INFO L225 Difference]: With dead ends: 192
[2022-02-24 01:17:02,655 INFO L226 Difference]: Without dead ends: 186
[2022-02-24 01:17:02,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3740 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=11484, Invalid=18966, Unknown=0, NotChecked=0, Total=30450
[2022-02-24 01:17:02,656 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 180 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:17:02,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 44 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:17:02,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states.
[2022-02-24 01:17:02,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185.
[2022-02-24 01:17:02,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 180 states have (on average 1.0055555555555555) internal successors, (181), 180 states have internal predecessors, (181), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:02,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions.
[2022-02-24 01:17:02,704 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182
[2022-02-24 01:17:02,704 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:17:02,704 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions.
[2022-02-24 01:17:02,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.0) internal successors, (178), 88 states have internal predecessors, (178), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:02,704 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions.
[2022-02-24 01:17:02,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185
[2022-02-24 01:17:02,705 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:17:02,705 INFO L514 BasicCegarLoop]: trace histogram [86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:17:02,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86
[2022-02-24 01:17:02,705 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:17:02,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:17:02,705 INFO L85 PathProgramCache]: Analyzing trace with hash -971121626, now seen corresponding path program 86 times
[2022-02-24 01:17:02,705 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:17:02,705 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255371334]
[2022-02-24 01:17:02,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:17:02,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:17:02,711 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:17:02,711 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:17:02,711 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:17:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:17:04,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:17:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:17:04,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:17:04,954 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:17:04,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255371334]
[2022-02-24 01:17:04,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1255371334] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:17:04,954 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:17:04,954 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90
[2022-02-24 01:17:04,954 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019498161]
[2022-02-24 01:17:04,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:17:04,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states
[2022-02-24 01:17:04,954 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:17:04,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants.
[2022-02-24 01:17:04,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010
[2022-02-24 01:17:04,956 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand has 90 states, 90 states have (on average 2.0) internal successors, (180), 89 states have internal predecessors, (180), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:07,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:17:07,991 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions.
[2022-02-24 01:17:07,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states.
[2022-02-24 01:17:07,991 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.0) internal successors, (180), 89 states have internal predecessors, (180), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 184
[2022-02-24 01:17:07,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:17:07,992 INFO L225 Difference]: With dead ends: 194
[2022-02-24 01:17:07,992 INFO L226 Difference]: Without dead ends: 188
[2022-02-24 01:17:07,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3827 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=11748, Invalid=19404, Unknown=0, NotChecked=0, Total=31152
[2022-02-24 01:17:07,995 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 182 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:17:07,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 44 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:17:07,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states.
[2022-02-24 01:17:08,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187.
[2022-02-24 01:17:08,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 182 states have (on average 1.0054945054945055) internal successors, (183), 182 states have internal predecessors, (183), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:08,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions.
[2022-02-24 01:17:08,057 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184
[2022-02-24 01:17:08,057 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:17:08,057 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions.
[2022-02-24 01:17:08,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.0) internal successors, (180), 89 states have internal predecessors, (180), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:08,057 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions.
[2022-02-24 01:17:08,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187
[2022-02-24 01:17:08,058 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:17:08,058 INFO L514 BasicCegarLoop]: trace histogram [87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:17:08,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87
[2022-02-24 01:17:08,058 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:17:08,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:17:08,058 INFO L85 PathProgramCache]: Analyzing trace with hash -2114066744, now seen corresponding path program 87 times
[2022-02-24 01:17:08,058 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:17:08,058 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696138121]
[2022-02-24 01:17:08,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:17:08,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:17:08,064 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:17:08,064 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:17:08,065 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:17:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:17:10,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:17:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:17:10,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:17:10,539 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:17:10,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696138121]
[2022-02-24 01:17:10,539 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1696138121] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:17:10,539 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:17:10,539 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91
[2022-02-24 01:17:10,539 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492222019]
[2022-02-24 01:17:10,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:17:10,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states
[2022-02-24 01:17:10,540 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:17:10,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants.
[2022-02-24 01:17:10,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190
[2022-02-24 01:17:10,541 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand has 91 states, 91 states have (on average 2.0) internal successors, (182), 90 states have internal predecessors, (182), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:13,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:17:13,443 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions.
[2022-02-24 01:17:13,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states.
[2022-02-24 01:17:13,444 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.0) internal successors, (182), 90 states have internal predecessors, (182), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 186
[2022-02-24 01:17:13,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:17:13,444 INFO L225 Difference]: With dead ends: 196
[2022-02-24 01:17:13,444 INFO L226 Difference]: Without dead ends: 190
[2022-02-24 01:17:13,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3915 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862
[2022-02-24 01:17:13,446 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 184 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:17:13,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 29 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:17:13,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states.
[2022-02-24 01:17:13,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189.
[2022-02-24 01:17:13,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 184 states have (on average 1.0054347826086956) internal successors, (185), 184 states have internal predecessors, (185), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:13,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions.
[2022-02-24 01:17:13,504 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186
[2022-02-24 01:17:13,504 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:17:13,504 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions.
[2022-02-24 01:17:13,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.0) internal successors, (182), 90 states have internal predecessors, (182), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:13,504 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions.
[2022-02-24 01:17:13,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189
[2022-02-24 01:17:13,505 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:17:13,505 INFO L514 BasicCegarLoop]: trace histogram [88, 88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:17:13,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88
[2022-02-24 01:17:13,505 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:17:13,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:17:13,505 INFO L85 PathProgramCache]: Analyzing trace with hash -972697366, now seen corresponding path program 88 times
[2022-02-24 01:17:13,505 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:17:13,505 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042498516]
[2022-02-24 01:17:13,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:17:13,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:17:13,512 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:17:13,512 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:17:13,512 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:17:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:17:15,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:17:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:17:15,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:17:15,814 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:17:15,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042498516]
[2022-02-24 01:17:15,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1042498516] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:17:15,814 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:17:15,814 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92
[2022-02-24 01:17:15,814 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242978244]
[2022-02-24 01:17:15,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:17:15,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states
[2022-02-24 01:17:15,815 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:17:15,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants.
[2022-02-24 01:17:15,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372
[2022-02-24 01:17:15,817 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand has 92 states, 92 states have (on average 2.0) internal successors, (184), 91 states have internal predecessors, (184), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:18,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:17:18,782 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions.
[2022-02-24 01:17:18,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states.
[2022-02-24 01:17:18,782 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.0) internal successors, (184), 91 states have internal predecessors, (184), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 188
[2022-02-24 01:17:18,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:17:18,783 INFO L225 Difference]: With dead ends: 198
[2022-02-24 01:17:18,783 INFO L226 Difference]: Without dead ends: 192
[2022-02-24 01:17:18,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4004 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=12285, Invalid=20295, Unknown=0, NotChecked=0, Total=32580
[2022-02-24 01:17:18,786 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 186 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:17:18,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 54 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:17:18,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states.
[2022-02-24 01:17:18,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191.
[2022-02-24 01:17:18,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 186 states have (on average 1.0053763440860215) internal successors, (187), 186 states have internal predecessors, (187), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:18,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions.
[2022-02-24 01:17:18,843 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188
[2022-02-24 01:17:18,843 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:17:18,843 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions.
[2022-02-24 01:17:18,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.0) internal successors, (184), 91 states have internal predecessors, (184), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:18,843 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions.
[2022-02-24 01:17:18,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191
[2022-02-24 01:17:18,844 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:17:18,844 INFO L514 BasicCegarLoop]: trace histogram [89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:17:18,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89
[2022-02-24 01:17:18,844 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:17:18,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:17:18,844 INFO L85 PathProgramCache]: Analyzing trace with hash 666614412, now seen corresponding path program 89 times
[2022-02-24 01:17:18,844 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:17:18,845 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331783008]
[2022-02-24 01:17:18,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:17:18,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:17:18,850 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:17:18,850 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:17:18,850 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:17:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:17:21,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:17:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:17:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:17:21,245 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:17:21,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331783008]
[2022-02-24 01:17:21,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1331783008] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:17:21,245 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:17:21,245 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93
[2022-02-24 01:17:21,245 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127452362]
[2022-02-24 01:17:21,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:17:21,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states
[2022-02-24 01:17:21,245 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:17:21,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants.
[2022-02-24 01:17:21,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556
[2022-02-24 01:17:21,247 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand has 93 states, 93 states have (on average 2.0) internal successors, (186), 92 states have internal predecessors, (186), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:24,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:17:24,175 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions.
[2022-02-24 01:17:24,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states.
[2022-02-24 01:17:24,176 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.0) internal successors, (186), 92 states have internal predecessors, (186), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 190
[2022-02-24 01:17:24,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:17:24,177 INFO L225 Difference]: With dead ends: 200
[2022-02-24 01:17:24,177 INFO L226 Difference]: Without dead ends: 194
[2022-02-24 01:17:24,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4094 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=12558, Invalid=20748, Unknown=0, NotChecked=0, Total=33306
[2022-02-24 01:17:24,179 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 188 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:17:24,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 39 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:17:24,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states.
[2022-02-24 01:17:24,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 193.
[2022-02-24 01:17:24,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 188 states have (on average 1.0053191489361701) internal successors, (189), 188 states have internal predecessors, (189), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:24,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions.
[2022-02-24 01:17:24,230 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190
[2022-02-24 01:17:24,230 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:17:24,230 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions.
[2022-02-24 01:17:24,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.0) internal successors, (186), 92 states have internal predecessors, (186), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:24,230 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions.
[2022-02-24 01:17:24,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193
[2022-02-24 01:17:24,231 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:17:24,231 INFO L514 BasicCegarLoop]: trace histogram [90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:17:24,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90
[2022-02-24 01:17:24,231 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:17:24,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:17:24,232 INFO L85 PathProgramCache]: Analyzing trace with hash -207764562, now seen corresponding path program 90 times
[2022-02-24 01:17:24,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:17:24,232 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621078626]
[2022-02-24 01:17:24,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:17:24,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:17:24,237 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:17:24,238 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:17:24,238 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:17:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:17:26,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:17:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:17:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:17:26,687 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:17:26,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621078626]
[2022-02-24 01:17:26,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1621078626] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:17:26,687 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:17:26,688 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94
[2022-02-24 01:17:26,688 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615406512]
[2022-02-24 01:17:26,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:17:26,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states
[2022-02-24 01:17:26,688 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:17:26,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants.
[2022-02-24 01:17:26,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742
[2022-02-24 01:17:26,690 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand has 94 states, 94 states have (on average 2.0) internal successors, (188), 93 states have internal predecessors, (188), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:29,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:17:29,826 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions.
[2022-02-24 01:17:29,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states.
[2022-02-24 01:17:29,827 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.0) internal successors, (188), 93 states have internal predecessors, (188), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 192
[2022-02-24 01:17:29,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:17:29,828 INFO L225 Difference]: With dead ends: 202
[2022-02-24 01:17:29,828 INFO L226 Difference]: Without dead ends: 196
[2022-02-24 01:17:29,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4185 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=12834, Invalid=21206, Unknown=0, NotChecked=0, Total=34040
[2022-02-24 01:17:29,829 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 190 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:17:29,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 34 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:17:29,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states.
[2022-02-24 01:17:29,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195.
[2022-02-24 01:17:29,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 190 states have (on average 1.0052631578947369) internal successors, (191), 190 states have internal predecessors, (191), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:29,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions.
[2022-02-24 01:17:29,883 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192
[2022-02-24 01:17:29,883 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:17:29,883 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions.
[2022-02-24 01:17:29,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.0) internal successors, (188), 93 states have internal predecessors, (188), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:29,883 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions.
[2022-02-24 01:17:29,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195
[2022-02-24 01:17:29,892 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:17:29,892 INFO L514 BasicCegarLoop]: trace histogram [91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:17:29,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91
[2022-02-24 01:17:29,892 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:17:29,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:17:29,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1327631440, now seen corresponding path program 91 times
[2022-02-24 01:17:29,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:17:29,893 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710923354]
[2022-02-24 01:17:29,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:17:29,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:17:29,901 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:17:29,901 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:17:29,901 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:17:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:17:32,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:17:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:17:32,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:17:32,524 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:17:32,524 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710923354]
[2022-02-24 01:17:32,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1710923354] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:17:32,525 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:17:32,525 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95
[2022-02-24 01:17:32,525 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149586559]
[2022-02-24 01:17:32,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:17:32,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states
[2022-02-24 01:17:32,525 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:17:32,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants.
[2022-02-24 01:17:32,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930
[2022-02-24 01:17:32,527 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand has 95 states, 95 states have (on average 2.0) internal successors, (190), 94 states have internal predecessors, (190), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:35,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:17:35,625 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions.
[2022-02-24 01:17:35,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states.
[2022-02-24 01:17:35,625 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.0) internal successors, (190), 94 states have internal predecessors, (190), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 194
[2022-02-24 01:17:35,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:17:35,626 INFO L225 Difference]: With dead ends: 204
[2022-02-24 01:17:35,626 INFO L226 Difference]: Without dead ends: 198
[2022-02-24 01:17:35,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4277 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782
[2022-02-24 01:17:35,627 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 192 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:17:35,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 44 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:17:35,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states.
[2022-02-24 01:17:35,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197.
[2022-02-24 01:17:35,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 192 states have (on average 1.0052083333333333) internal successors, (193), 192 states have internal predecessors, (193), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:35,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions.
[2022-02-24 01:17:35,680 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194
[2022-02-24 01:17:35,681 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:17:35,681 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions.
[2022-02-24 01:17:35,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.0) internal successors, (190), 94 states have internal predecessors, (190), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:35,681 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions.
[2022-02-24 01:17:35,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197
[2022-02-24 01:17:35,681 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:17:35,681 INFO L514 BasicCegarLoop]: trace histogram [92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:17:35,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92
[2022-02-24 01:17:35,682 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:17:35,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:17:35,682 INFO L85 PathProgramCache]: Analyzing trace with hash -625560462, now seen corresponding path program 92 times
[2022-02-24 01:17:35,682 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:17:35,682 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678909305]
[2022-02-24 01:17:35,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:17:35,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:17:35,688 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:17:35,688 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:17:35,689 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:17:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:17:38,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:17:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:17:38,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:17:38,221 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:17:38,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678909305]
[2022-02-24 01:17:38,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1678909305] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:17:38,221 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:17:38,221 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96
[2022-02-24 01:17:38,221 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257483741]
[2022-02-24 01:17:38,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:17:38,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states
[2022-02-24 01:17:38,222 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:17:38,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants.
[2022-02-24 01:17:38,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120
[2022-02-24 01:17:38,223 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand has 96 states, 96 states have (on average 2.0) internal successors, (192), 95 states have internal predecessors, (192), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:41,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:17:41,369 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions.
[2022-02-24 01:17:41,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states.
[2022-02-24 01:17:41,370 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.0) internal successors, (192), 95 states have internal predecessors, (192), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 196
[2022-02-24 01:17:41,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:17:41,370 INFO L225 Difference]: With dead ends: 206
[2022-02-24 01:17:41,371 INFO L226 Difference]: Without dead ends: 200
[2022-02-24 01:17:41,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4370 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=13395, Invalid=22137, Unknown=0, NotChecked=0, Total=35532
[2022-02-24 01:17:41,373 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 194 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:17:41,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 49 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:17:41,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states.
[2022-02-24 01:17:41,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199.
[2022-02-24 01:17:41,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 194 states have (on average 1.0051546391752577) internal successors, (195), 194 states have internal predecessors, (195), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:41,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions.
[2022-02-24 01:17:41,435 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196
[2022-02-24 01:17:41,435 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:17:41,435 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions.
[2022-02-24 01:17:41,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.0) internal successors, (192), 95 states have internal predecessors, (192), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:41,435 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions.
[2022-02-24 01:17:41,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199
[2022-02-24 01:17:41,436 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:17:41,436 INFO L514 BasicCegarLoop]: trace histogram [93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:17:41,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93
[2022-02-24 01:17:41,436 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:17:41,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:17:41,436 INFO L85 PathProgramCache]: Analyzing trace with hash -742269932, now seen corresponding path program 93 times
[2022-02-24 01:17:41,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:17:41,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104535273]
[2022-02-24 01:17:41,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:17:41,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:17:41,443 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:17:41,443 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:17:41,443 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:17:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:17:44,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:17:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:17:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:17:44,070 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:17:44,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104535273]
[2022-02-24 01:17:44,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [104535273] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:17:44,071 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:17:44,071 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97
[2022-02-24 01:17:44,071 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814137853]
[2022-02-24 01:17:44,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:17:44,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states
[2022-02-24 01:17:44,071 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:17:44,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants.
[2022-02-24 01:17:44,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312
[2022-02-24 01:17:44,072 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand has 97 states, 97 states have (on average 2.0) internal successors, (194), 96 states have internal predecessors, (194), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:47,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:17:47,292 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions.
[2022-02-24 01:17:47,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states.
[2022-02-24 01:17:47,292 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0) internal successors, (194), 96 states have internal predecessors, (194), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 198
[2022-02-24 01:17:47,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:17:47,293 INFO L225 Difference]: With dead ends: 208
[2022-02-24 01:17:47,293 INFO L226 Difference]: Without dead ends: 202
[2022-02-24 01:17:47,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4464 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=13680, Invalid=22610, Unknown=0, NotChecked=0, Total=36290
[2022-02-24 01:17:47,295 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 196 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:17:47,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 29 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:17:47,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states.
[2022-02-24 01:17:47,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 201.
[2022-02-24 01:17:47,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 196 states have (on average 1.0051020408163265) internal successors, (197), 196 states have internal predecessors, (197), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:47,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions.
[2022-02-24 01:17:47,351 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198
[2022-02-24 01:17:47,351 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:17:47,351 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions.
[2022-02-24 01:17:47,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.0) internal successors, (194), 96 states have internal predecessors, (194), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:47,351 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions.
[2022-02-24 01:17:47,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201
[2022-02-24 01:17:47,352 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:17:47,352 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:17:47,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94
[2022-02-24 01:17:47,352 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:17:47,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:17:47,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1230920906, now seen corresponding path program 94 times
[2022-02-24 01:17:47,353 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:17:47,353 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722966869]
[2022-02-24 01:17:47,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:17:47,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:17:47,361 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:17:47,361 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:17:47,362 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:17:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:17:50,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:17:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:17:50,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:17:50,100 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:17:50,100 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722966869]
[2022-02-24 01:17:50,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1722966869] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:17:50,100 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:17:50,100 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98
[2022-02-24 01:17:50,100 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188983683]
[2022-02-24 01:17:50,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:17:50,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states
[2022-02-24 01:17:50,100 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:17:50,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants.
[2022-02-24 01:17:50,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506
[2022-02-24 01:17:50,102 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand has 98 states, 98 states have (on average 2.0) internal successors, (196), 97 states have internal predecessors, (196), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:53,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:17:53,383 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions.
[2022-02-24 01:17:53,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states.
[2022-02-24 01:17:53,383 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.0) internal successors, (196), 97 states have internal predecessors, (196), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 200
[2022-02-24 01:17:53,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:17:53,384 INFO L225 Difference]: With dead ends: 210
[2022-02-24 01:17:53,384 INFO L226 Difference]: Without dead ends: 204
[2022-02-24 01:17:53,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4559 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=13968, Invalid=23088, Unknown=0, NotChecked=0, Total=37056
[2022-02-24 01:17:53,385 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 198 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:17:53,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 39 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:17:53,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states.
[2022-02-24 01:17:53,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203.
[2022-02-24 01:17:53,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 198 states have (on average 1.005050505050505) internal successors, (199), 198 states have internal predecessors, (199), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:53,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions.
[2022-02-24 01:17:53,441 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200
[2022-02-24 01:17:53,441 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:17:53,441 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions.
[2022-02-24 01:17:53,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.0) internal successors, (196), 97 states have internal predecessors, (196), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:53,442 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions.
[2022-02-24 01:17:53,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203
[2022-02-24 01:17:53,442 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:17:53,442 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:17:53,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95
[2022-02-24 01:17:53,442 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:17:53,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:17:53,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1621895640, now seen corresponding path program 95 times
[2022-02-24 01:17:53,443 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:17:53,443 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961268290]
[2022-02-24 01:17:53,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:17:53,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:17:53,449 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:17:53,449 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:17:53,449 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:17:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:17:56,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:17:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:17:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:17:56,251 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:17:56,251 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961268290]
[2022-02-24 01:17:56,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1961268290] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:17:56,251 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:17:56,252 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99
[2022-02-24 01:17:56,252 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584063]
[2022-02-24 01:17:56,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:17:56,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states
[2022-02-24 01:17:56,252 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:17:56,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants.
[2022-02-24 01:17:56,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702
[2022-02-24 01:17:56,254 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand has 99 states, 99 states have (on average 2.0) internal successors, (198), 98 states have internal predecessors, (198), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:59,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:17:59,560 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions.
[2022-02-24 01:17:59,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states.
[2022-02-24 01:17:59,560 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.0) internal successors, (198), 98 states have internal predecessors, (198), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 202
[2022-02-24 01:17:59,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:17:59,561 INFO L225 Difference]: With dead ends: 212
[2022-02-24 01:17:59,561 INFO L226 Difference]: Without dead ends: 206
[2022-02-24 01:17:59,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4655 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830
[2022-02-24 01:17:59,564 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 200 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:17:59,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 29 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:17:59,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states.
[2022-02-24 01:17:59,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 205.
[2022-02-24 01:17:59,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 200 states have (on average 1.005) internal successors, (201), 200 states have internal predecessors, (201), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:59,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions.
[2022-02-24 01:17:59,623 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202
[2022-02-24 01:17:59,623 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:17:59,623 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions.
[2022-02-24 01:17:59,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.0) internal successors, (198), 98 states have internal predecessors, (198), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:17:59,623 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions.
[2022-02-24 01:17:59,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205
[2022-02-24 01:17:59,624 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:17:59,624 INFO L514 BasicCegarLoop]: trace histogram [96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:17:59,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96
[2022-02-24 01:17:59,624 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:17:59,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:17:59,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1305505798, now seen corresponding path program 96 times
[2022-02-24 01:17:59,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:17:59,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600107287]
[2022-02-24 01:17:59,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:17:59,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:17:59,631 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:17:59,631 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:17:59,631 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:17:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:18:02,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:18:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:18:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:18:02,563 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:18:02,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600107287]
[2022-02-24 01:18:02,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [600107287] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:18:02,564 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:18:02,564 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100
[2022-02-24 01:18:02,564 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762420280]
[2022-02-24 01:18:02,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:18:02,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states
[2022-02-24 01:18:02,564 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:18:02,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants.
[2022-02-24 01:18:02,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900
[2022-02-24 01:18:02,566 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand has 100 states, 100 states have (on average 2.0) internal successors, (200), 99 states have internal predecessors, (200), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:06,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:18:06,277 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions.
[2022-02-24 01:18:06,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states.
[2022-02-24 01:18:06,278 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.0) internal successors, (200), 99 states have internal predecessors, (200), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 204
[2022-02-24 01:18:06,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:18:06,279 INFO L225 Difference]: With dead ends: 214
[2022-02-24 01:18:06,279 INFO L226 Difference]: Without dead ends: 208
[2022-02-24 01:18:06,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4752 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=14553, Invalid=24059, Unknown=0, NotChecked=0, Total=38612
[2022-02-24 01:18:06,281 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 202 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:18:06,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 29 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:18:06,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states.
[2022-02-24 01:18:06,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207.
[2022-02-24 01:18:06,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 202 states have (on average 1.004950495049505) internal successors, (203), 202 states have internal predecessors, (203), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:06,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions.
[2022-02-24 01:18:06,354 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204
[2022-02-24 01:18:06,355 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:18:06,355 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions.
[2022-02-24 01:18:06,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.0) internal successors, (200), 99 states have internal predecessors, (200), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:06,355 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions.
[2022-02-24 01:18:06,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207
[2022-02-24 01:18:06,356 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:18:06,356 INFO L514 BasicCegarLoop]: trace histogram [97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:18:06,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97
[2022-02-24 01:18:06,356 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:18:06,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:18:06,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1334708836, now seen corresponding path program 97 times
[2022-02-24 01:18:06,356 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:18:06,356 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452575633]
[2022-02-24 01:18:06,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:18:06,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:18:06,364 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:18:06,364 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:18:06,364 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:18:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:18:09,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:18:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:18:09,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:18:09,388 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:18:09,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452575633]
[2022-02-24 01:18:09,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1452575633] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:18:09,388 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:18:09,388 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101
[2022-02-24 01:18:09,388 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006483185]
[2022-02-24 01:18:09,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:18:09,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states
[2022-02-24 01:18:09,389 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:18:09,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants.
[2022-02-24 01:18:09,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100
[2022-02-24 01:18:09,391 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand has 101 states, 101 states have (on average 2.0) internal successors, (202), 100 states have internal predecessors, (202), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:13,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:18:13,146 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions.
[2022-02-24 01:18:13,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states.
[2022-02-24 01:18:13,146 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.0) internal successors, (202), 100 states have internal predecessors, (202), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 206
[2022-02-24 01:18:13,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:18:13,147 INFO L225 Difference]: With dead ends: 216
[2022-02-24 01:18:13,147 INFO L226 Difference]: Without dead ends: 210
[2022-02-24 01:18:13,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4850 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=14850, Invalid=24552, Unknown=0, NotChecked=0, Total=39402
[2022-02-24 01:18:13,149 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 204 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:18:13,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 29 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:18:13,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states.
[2022-02-24 01:18:13,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209.
[2022-02-24 01:18:13,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 204 states have (on average 1.0049019607843137) internal successors, (205), 204 states have internal predecessors, (205), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:13,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions.
[2022-02-24 01:18:13,210 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 206
[2022-02-24 01:18:13,210 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:18:13,210 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions.
[2022-02-24 01:18:13,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.0) internal successors, (202), 100 states have internal predecessors, (202), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:13,210 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions.
[2022-02-24 01:18:13,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209
[2022-02-24 01:18:13,211 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:18:13,211 INFO L514 BasicCegarLoop]: trace histogram [98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:18:13,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98
[2022-02-24 01:18:13,211 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:18:13,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:18:13,211 INFO L85 PathProgramCache]: Analyzing trace with hash 665942718, now seen corresponding path program 98 times
[2022-02-24 01:18:13,211 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:18:13,211 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694783709]
[2022-02-24 01:18:13,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:18:13,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:18:13,218 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:18:13,219 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:18:13,219 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:18:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:18:16,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:18:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:18:16,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:18:16,292 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:18:16,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694783709]
[2022-02-24 01:18:16,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [694783709] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:18:16,292 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:18:16,292 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102
[2022-02-24 01:18:16,293 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994099587]
[2022-02-24 01:18:16,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:18:16,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states
[2022-02-24 01:18:16,293 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:18:16,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants.
[2022-02-24 01:18:16,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302
[2022-02-24 01:18:16,295 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand has 102 states, 102 states have (on average 2.0) internal successors, (204), 101 states have internal predecessors, (204), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:20,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:18:20,238 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions.
[2022-02-24 01:18:20,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states.
[2022-02-24 01:18:20,239 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.0) internal successors, (204), 101 states have internal predecessors, (204), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 208
[2022-02-24 01:18:20,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:18:20,240 INFO L225 Difference]: With dead ends: 218
[2022-02-24 01:18:20,240 INFO L226 Difference]: Without dead ends: 212
[2022-02-24 01:18:20,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4949 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=15150, Invalid=25050, Unknown=0, NotChecked=0, Total=40200
[2022-02-24 01:18:20,243 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 206 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:18:20,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 54 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:18:20,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states.
[2022-02-24 01:18:20,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 211.
[2022-02-24 01:18:20,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 206 states have (on average 1.0048543689320388) internal successors, (207), 206 states have internal predecessors, (207), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:20,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions.
[2022-02-24 01:18:20,324 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 208
[2022-02-24 01:18:20,325 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:18:20,325 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions.
[2022-02-24 01:18:20,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.0) internal successors, (204), 101 states have internal predecessors, (204), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:20,325 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions.
[2022-02-24 01:18:20,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211
[2022-02-24 01:18:20,327 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:18:20,328 INFO L514 BasicCegarLoop]: trace histogram [99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:18:20,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99
[2022-02-24 01:18:20,328 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:18:20,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:18:20,328 INFO L85 PathProgramCache]: Analyzing trace with hash -853262496, now seen corresponding path program 99 times
[2022-02-24 01:18:20,328 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:18:20,328 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670109428]
[2022-02-24 01:18:20,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:18:20,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:18:20,337 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:18:20,337 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:18:20,338 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:18:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:18:23,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:18:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:18:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:18:23,528 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:18:23,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670109428]
[2022-02-24 01:18:23,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [670109428] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:18:23,528 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:18:23,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103
[2022-02-24 01:18:23,528 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683084577]
[2022-02-24 01:18:23,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:18:23,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states
[2022-02-24 01:18:23,528 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:18:23,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants.
[2022-02-24 01:18:23,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506
[2022-02-24 01:18:23,530 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand has 103 states, 103 states have (on average 2.0) internal successors, (206), 102 states have internal predecessors, (206), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:27,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:18:27,598 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions.
[2022-02-24 01:18:27,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states.
[2022-02-24 01:18:27,598 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0) internal successors, (206), 102 states have internal predecessors, (206), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 210
[2022-02-24 01:18:27,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:18:27,599 INFO L225 Difference]: With dead ends: 220
[2022-02-24 01:18:27,599 INFO L226 Difference]: Without dead ends: 214
[2022-02-24 01:18:27,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006
[2022-02-24 01:18:27,602 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 208 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:18:27,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 79 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:18:27,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states.
[2022-02-24 01:18:27,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 213.
[2022-02-24 01:18:27,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 208 states have (on average 1.0048076923076923) internal successors, (209), 208 states have internal predecessors, (209), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:27,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions.
[2022-02-24 01:18:27,685 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 210
[2022-02-24 01:18:27,685 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:18:27,685 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions.
[2022-02-24 01:18:27,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.0) internal successors, (206), 102 states have internal predecessors, (206), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:27,685 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions.
[2022-02-24 01:18:27,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213
[2022-02-24 01:18:27,686 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:18:27,686 INFO L514 BasicCegarLoop]: trace histogram [100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:18:27,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100
[2022-02-24 01:18:27,686 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:18:27,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:18:27,687 INFO L85 PathProgramCache]: Analyzing trace with hash -520592510, now seen corresponding path program 100 times
[2022-02-24 01:18:27,687 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:18:27,687 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317232508]
[2022-02-24 01:18:27,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:18:27,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:18:27,694 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:18:27,694 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:18:27,694 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:18:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:18:31,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:18:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:18:31,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:18:31,006 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:18:31,006 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317232508]
[2022-02-24 01:18:31,006 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [317232508] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:18:31,007 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:18:31,007 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104
[2022-02-24 01:18:31,007 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580375188]
[2022-02-24 01:18:31,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:18:31,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states
[2022-02-24 01:18:31,007 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:18:31,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants.
[2022-02-24 01:18:31,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712
[2022-02-24 01:18:31,009 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand has 104 states, 104 states have (on average 2.0) internal successors, (208), 103 states have internal predecessors, (208), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:35,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:18:35,243 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions.
[2022-02-24 01:18:35,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states.
[2022-02-24 01:18:35,244 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.0) internal successors, (208), 103 states have internal predecessors, (208), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 212
[2022-02-24 01:18:35,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:18:35,245 INFO L225 Difference]: With dead ends: 222
[2022-02-24 01:18:35,245 INFO L226 Difference]: Without dead ends: 216
[2022-02-24 01:18:35,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5150 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=15759, Invalid=26061, Unknown=0, NotChecked=0, Total=41820
[2022-02-24 01:18:35,247 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 210 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:18:35,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 54 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:18:35,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states.
[2022-02-24 01:18:35,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215.
[2022-02-24 01:18:35,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 210 states have (on average 1.0047619047619047) internal successors, (211), 210 states have internal predecessors, (211), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:35,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions.
[2022-02-24 01:18:35,312 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 212
[2022-02-24 01:18:35,312 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:18:35,313 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions.
[2022-02-24 01:18:35,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.0) internal successors, (208), 103 states have internal predecessors, (208), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:35,313 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions.
[2022-02-24 01:18:35,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215
[2022-02-24 01:18:35,313 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:18:35,314 INFO L514 BasicCegarLoop]: trace histogram [101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:18:35,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101
[2022-02-24 01:18:35,314 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:18:35,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:18:35,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1347684132, now seen corresponding path program 101 times
[2022-02-24 01:18:35,314 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:18:35,314 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692682566]
[2022-02-24 01:18:35,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:18:35,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:18:35,322 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:18:35,322 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:18:35,322 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:18:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:18:38,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:18:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:18:38,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:18:38,681 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:18:38,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692682566]
[2022-02-24 01:18:38,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1692682566] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:18:38,681 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:18:38,681 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105
[2022-02-24 01:18:38,681 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848818576]
[2022-02-24 01:18:38,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:18:38,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states
[2022-02-24 01:18:38,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:18:38,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants.
[2022-02-24 01:18:38,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920
[2022-02-24 01:18:38,684 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand has 105 states, 105 states have (on average 2.0) internal successors, (210), 104 states have internal predecessors, (210), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:42,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:18:42,897 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions.
[2022-02-24 01:18:42,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states.
[2022-02-24 01:18:42,897 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.0) internal successors, (210), 104 states have internal predecessors, (210), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 214
[2022-02-24 01:18:42,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:18:42,898 INFO L225 Difference]: With dead ends: 224
[2022-02-24 01:18:42,898 INFO L226 Difference]: Without dead ends: 218
[2022-02-24 01:18:42,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5252 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=16068, Invalid=26574, Unknown=0, NotChecked=0, Total=42642
[2022-02-24 01:18:42,901 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 212 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:18:42,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 29 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:18:42,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states.
[2022-02-24 01:18:42,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217.
[2022-02-24 01:18:42,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 212 states have (on average 1.0047169811320755) internal successors, (213), 212 states have internal predecessors, (213), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:42,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions.
[2022-02-24 01:18:42,970 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 214
[2022-02-24 01:18:42,970 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:18:42,970 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions.
[2022-02-24 01:18:42,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.0) internal successors, (210), 104 states have internal predecessors, (210), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:42,970 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions.
[2022-02-24 01:18:42,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217
[2022-02-24 01:18:42,971 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:18:42,971 INFO L514 BasicCegarLoop]: trace histogram [102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:18:42,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102
[2022-02-24 01:18:42,971 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:18:42,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:18:42,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1465207366, now seen corresponding path program 102 times
[2022-02-24 01:18:42,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:18:42,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182049908]
[2022-02-24 01:18:42,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:18:42,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:18:42,979 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:18:42,979 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:18:42,979 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:18:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:18:46,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:18:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:18:46,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:18:46,419 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:18:46,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182049908]
[2022-02-24 01:18:46,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [182049908] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:18:46,419 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:18:46,419 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106
[2022-02-24 01:18:46,419 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763363213]
[2022-02-24 01:18:46,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:18:46,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states
[2022-02-24 01:18:46,420 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:18:46,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants.
[2022-02-24 01:18:46,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130
[2022-02-24 01:18:46,421 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand has 106 states, 106 states have (on average 2.0) internal successors, (212), 105 states have internal predecessors, (212), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:50,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:18:50,722 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions.
[2022-02-24 01:18:50,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states.
[2022-02-24 01:18:50,722 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.0) internal successors, (212), 105 states have internal predecessors, (212), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 216
[2022-02-24 01:18:50,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:18:50,723 INFO L225 Difference]: With dead ends: 226
[2022-02-24 01:18:50,723 INFO L226 Difference]: Without dead ends: 220
[2022-02-24 01:18:50,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5355 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=16380, Invalid=27092, Unknown=0, NotChecked=0, Total=43472
[2022-02-24 01:18:50,727 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 214 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:18:50,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 24 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:18:50,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states.
[2022-02-24 01:18:50,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219.
[2022-02-24 01:18:50,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 214 states have (on average 1.0046728971962617) internal successors, (215), 214 states have internal predecessors, (215), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:50,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions.
[2022-02-24 01:18:50,829 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 216
[2022-02-24 01:18:50,830 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:18:50,830 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions.
[2022-02-24 01:18:50,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 2.0) internal successors, (212), 105 states have internal predecessors, (212), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:50,830 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions.
[2022-02-24 01:18:50,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219
[2022-02-24 01:18:50,830 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:18:50,830 INFO L514 BasicCegarLoop]: trace histogram [103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:18:50,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103
[2022-02-24 01:18:50,831 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:18:50,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:18:50,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1559081752, now seen corresponding path program 103 times
[2022-02-24 01:18:50,831 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:18:50,831 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736336027]
[2022-02-24 01:18:50,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:18:50,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:18:50,839 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:18:50,839 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:18:50,839 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:18:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:18:54,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:18:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:18:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:18:54,312 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:18:54,313 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736336027]
[2022-02-24 01:18:54,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [736336027] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:18:54,313 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:18:54,313 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107
[2022-02-24 01:18:54,313 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569530725]
[2022-02-24 01:18:54,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:18:54,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states
[2022-02-24 01:18:54,313 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:18:54,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants.
[2022-02-24 01:18:54,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342
[2022-02-24 01:18:54,316 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand has 107 states, 107 states have (on average 2.0) internal successors, (214), 106 states have internal predecessors, (214), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:58,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:18:58,628 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions.
[2022-02-24 01:18:58,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states.
[2022-02-24 01:18:58,629 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.0) internal successors, (214), 106 states have internal predecessors, (214), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 218
[2022-02-24 01:18:58,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:18:58,630 INFO L225 Difference]: With dead ends: 228
[2022-02-24 01:18:58,630 INFO L226 Difference]: Without dead ends: 222
[2022-02-24 01:18:58,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5459 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310
[2022-02-24 01:18:58,633 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 216 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:18:58,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 49 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:18:58,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states.
[2022-02-24 01:18:58,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 221.
[2022-02-24 01:18:58,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 216 states have (on average 1.0046296296296295) internal successors, (217), 216 states have internal predecessors, (217), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:58,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions.
[2022-02-24 01:18:58,736 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 218
[2022-02-24 01:18:58,736 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:18:58,737 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions.
[2022-02-24 01:18:58,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.0) internal successors, (214), 106 states have internal predecessors, (214), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:18:58,737 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions.
[2022-02-24 01:18:58,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221
[2022-02-24 01:18:58,737 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:18:58,738 INFO L514 BasicCegarLoop]: trace histogram [104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:18:58,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104
[2022-02-24 01:18:58,738 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:18:58,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:18:58,738 INFO L85 PathProgramCache]: Analyzing trace with hash -208064758, now seen corresponding path program 104 times
[2022-02-24 01:18:58,738 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:18:58,738 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527513125]
[2022-02-24 01:18:58,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:18:58,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:18:58,747 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:18:58,747 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:18:58,747 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:18:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:19:02,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:19:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:19:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:19:02,346 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:19:02,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527513125]
[2022-02-24 01:19:02,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [527513125] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:19:02,346 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:19:02,346 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108
[2022-02-24 01:19:02,346 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201703536]
[2022-02-24 01:19:02,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:19:02,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states
[2022-02-24 01:19:02,347 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:19:02,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants.
[2022-02-24 01:19:02,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556
[2022-02-24 01:19:02,348 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand has 108 states, 108 states have (on average 2.0) internal successors, (216), 107 states have internal predecessors, (216), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:19:06,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:19:06,708 INFO L93 Difference]: Finished difference Result 230 states and 230 transitions.
[2022-02-24 01:19:06,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states.
[2022-02-24 01:19:06,708 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.0) internal successors, (216), 107 states have internal predecessors, (216), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 220
[2022-02-24 01:19:06,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:19:06,709 INFO L225 Difference]: With dead ends: 230
[2022-02-24 01:19:06,709 INFO L226 Difference]: Without dead ends: 224
[2022-02-24 01:19:06,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5564 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=17013, Invalid=28143, Unknown=0, NotChecked=0, Total=45156
[2022-02-24 01:19:06,712 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 218 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:19:06,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 34 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:19:06,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states.
[2022-02-24 01:19:06,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 223.
[2022-02-24 01:19:06,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 218 states have (on average 1.0045871559633028) internal successors, (219), 218 states have internal predecessors, (219), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:19:06,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions.
[2022-02-24 01:19:06,791 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 220
[2022-02-24 01:19:06,791 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:19:06,791 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions.
[2022-02-24 01:19:06,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 2.0) internal successors, (216), 107 states have internal predecessors, (216), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:19:06,791 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions.
[2022-02-24 01:19:06,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223
[2022-02-24 01:19:06,792 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:19:06,792 INFO L514 BasicCegarLoop]: trace histogram [105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:19:06,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105
[2022-02-24 01:19:06,792 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:19:06,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:19:06,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1039143084, now seen corresponding path program 105 times
[2022-02-24 01:19:06,793 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:19:06,793 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928134593]
[2022-02-24 01:19:06,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:19:06,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:19:06,800 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:19:06,800 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:19:06,800 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:19:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:19:10,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:19:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:19:10,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:19:10,281 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:19:10,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928134593]
[2022-02-24 01:19:10,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [928134593] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:19:10,282 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:19:10,282 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [] total 109
[2022-02-24 01:19:10,282 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24408859]
[2022-02-24 01:19:10,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:19:10,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states
[2022-02-24 01:19:10,282 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:19:10,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants.
[2022-02-24 01:19:10,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772
[2022-02-24 01:19:10,285 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand has 109 states, 109 states have (on average 2.0) internal successors, (218), 108 states have internal predecessors, (218), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:19:14,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:19:14,785 INFO L93 Difference]: Finished difference Result 232 states and 232 transitions.
[2022-02-24 01:19:14,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states.
[2022-02-24 01:19:14,786 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.0) internal successors, (218), 108 states have internal predecessors, (218), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 222
[2022-02-24 01:19:14,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:19:14,786 INFO L225 Difference]: With dead ends: 232
[2022-02-24 01:19:14,786 INFO L226 Difference]: Without dead ends: 226
[2022-02-24 01:19:14,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5670 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=17334, Invalid=28676, Unknown=0, NotChecked=0, Total=46010
[2022-02-24 01:19:14,789 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 220 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:19:14,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 44 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:19:14,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states.
[2022-02-24 01:19:14,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 225.
[2022-02-24 01:19:14,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 220 states have (on average 1.0045454545454546) internal successors, (221), 220 states have internal predecessors, (221), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:19:14,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions.
[2022-02-24 01:19:14,861 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 222
[2022-02-24 01:19:14,861 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:19:14,861 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions.
[2022-02-24 01:19:14,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.0) internal successors, (218), 108 states have internal predecessors, (218), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:19:14,861 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions.
[2022-02-24 01:19:14,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225
[2022-02-24 01:19:14,862 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:19:14,862 INFO L514 BasicCegarLoop]: trace histogram [106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:19:14,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106
[2022-02-24 01:19:14,862 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:19:14,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:19:14,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1310003662, now seen corresponding path program 106 times
[2022-02-24 01:19:14,863 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:19:14,863 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518178229]
[2022-02-24 01:19:14,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:19:14,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:19:14,879 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:19:14,879 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:19:14,879 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:19:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:19:18,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:19:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:19:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:19:18,483 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:19:18,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518178229]
[2022-02-24 01:19:18,483 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [518178229] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:19:18,483 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:19:18,483 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [110] imperfect sequences [] total 110
[2022-02-24 01:19:18,483 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035113011]
[2022-02-24 01:19:18,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:19:18,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states
[2022-02-24 01:19:18,484 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:19:18,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants.
[2022-02-24 01:19:18,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990
[2022-02-24 01:19:18,485 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand has 110 states, 110 states have (on average 2.0) internal successors, (220), 109 states have internal predecessors, (220), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:19:22,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:19:22,980 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions.
[2022-02-24 01:19:22,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states.
[2022-02-24 01:19:22,981 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 2.0) internal successors, (220), 109 states have internal predecessors, (220), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 224
[2022-02-24 01:19:22,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:19:22,981 INFO L225 Difference]: With dead ends: 234
[2022-02-24 01:19:22,981 INFO L226 Difference]: Without dead ends: 228
[2022-02-24 01:19:22,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5777 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=17658, Invalid=29214, Unknown=0, NotChecked=0, Total=46872
[2022-02-24 01:19:22,984 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 222 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:19:22,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 29 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:19:22,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states.
[2022-02-24 01:19:23,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 227.
[2022-02-24 01:19:23,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 222 states have (on average 1.0045045045045045) internal successors, (223), 222 states have internal predecessors, (223), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:19:23,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions.
[2022-02-24 01:19:23,058 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 224
[2022-02-24 01:19:23,058 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:19:23,058 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions.
[2022-02-24 01:19:23,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 2.0) internal successors, (220), 109 states have internal predecessors, (220), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:19:23,058 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions.
[2022-02-24 01:19:23,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227
[2022-02-24 01:19:23,059 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:19:23,059 INFO L514 BasicCegarLoop]: trace histogram [107, 107, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:19:23,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107
[2022-02-24 01:19:23,059 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:19:23,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:19:23,059 INFO L85 PathProgramCache]: Analyzing trace with hash -385985936, now seen corresponding path program 107 times
[2022-02-24 01:19:23,060 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:19:23,060 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653767072]
[2022-02-24 01:19:23,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:19:23,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:19:23,068 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:19:23,069 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:19:23,069 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:19:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:19:26,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:19:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:19:26,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:19:26,757 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:19:26,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653767072]
[2022-02-24 01:19:26,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1653767072] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:19:26,757 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:19:26,757 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111
[2022-02-24 01:19:26,757 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676564622]
[2022-02-24 01:19:26,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:19:26,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states
[2022-02-24 01:19:26,757 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:19:26,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants.
[2022-02-24 01:19:26,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210
[2022-02-24 01:19:26,760 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand has 111 states, 111 states have (on average 2.0) internal successors, (222), 110 states have internal predecessors, (222), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:19:31,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:19:31,419 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions.
[2022-02-24 01:19:31,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states.
[2022-02-24 01:19:31,420 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.0) internal successors, (222), 110 states have internal predecessors, (222), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 226
[2022-02-24 01:19:31,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:19:31,421 INFO L225 Difference]: With dead ends: 236
[2022-02-24 01:19:31,421 INFO L226 Difference]: Without dead ends: 230
[2022-02-24 01:19:31,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5885 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=17985, Invalid=29757, Unknown=0, NotChecked=0, Total=47742
[2022-02-24 01:19:31,424 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 224 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:19:31,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 29 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:19:31,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states.
[2022-02-24 01:19:31,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 229.
[2022-02-24 01:19:31,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 224 states have (on average 1.0044642857142858) internal successors, (225), 224 states have internal predecessors, (225), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:19:31,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions.
[2022-02-24 01:19:31,546 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 226
[2022-02-24 01:19:31,546 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:19:31,546 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions.
[2022-02-24 01:19:31,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 2.0) internal successors, (222), 110 states have internal predecessors, (222), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:19:31,546 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions.
[2022-02-24 01:19:31,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229
[2022-02-24 01:19:31,547 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:19:31,547 INFO L514 BasicCegarLoop]: trace histogram [108, 108, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:19:31,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108
[2022-02-24 01:19:31,548 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:19:31,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:19:31,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1855582866, now seen corresponding path program 108 times
[2022-02-24 01:19:31,548 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:19:31,548 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614748258]
[2022-02-24 01:19:31,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:19:31,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:19:31,559 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:19:31,559 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:19:31,560 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:19:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:19:35,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:19:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:19:35,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:19:35,628 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:19:35,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614748258]
[2022-02-24 01:19:35,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1614748258] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:19:35,628 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:19:35,628 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [112] imperfect sequences [] total 112
[2022-02-24 01:19:35,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039797284]
[2022-02-24 01:19:35,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:19:35,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states
[2022-02-24 01:19:35,629 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:19:35,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants.
[2022-02-24 01:19:35,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432
[2022-02-24 01:19:35,632 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand has 112 states, 112 states have (on average 2.0) internal successors, (224), 111 states have internal predecessors, (224), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:19:40,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:19:40,343 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions.
[2022-02-24 01:19:40,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states.
[2022-02-24 01:19:40,343 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.0) internal successors, (224), 111 states have internal predecessors, (224), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 228
[2022-02-24 01:19:40,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:19:40,344 INFO L225 Difference]: With dead ends: 238
[2022-02-24 01:19:40,344 INFO L226 Difference]: Without dead ends: 232
[2022-02-24 01:19:40,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5994 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=18315, Invalid=30305, Unknown=0, NotChecked=0, Total=48620
[2022-02-24 01:19:40,347 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 226 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:19:40,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 24 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:19:40,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states.
[2022-02-24 01:19:40,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 231.
[2022-02-24 01:19:40,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 226 states have (on average 1.0044247787610618) internal successors, (227), 226 states have internal predecessors, (227), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:19:40,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions.
[2022-02-24 01:19:40,452 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 228
[2022-02-24 01:19:40,452 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:19:40,452 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions.
[2022-02-24 01:19:40,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 2.0) internal successors, (224), 111 states have internal predecessors, (224), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:19:40,452 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions.
[2022-02-24 01:19:40,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231
[2022-02-24 01:19:40,453 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:19:40,453 INFO L514 BasicCegarLoop]: trace histogram [109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:19:40,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109
[2022-02-24 01:19:40,453 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:19:40,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:19:40,454 INFO L85 PathProgramCache]: Analyzing trace with hash -70381004, now seen corresponding path program 109 times
[2022-02-24 01:19:40,454 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:19:40,454 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385898428]
[2022-02-24 01:19:40,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:19:40,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:19:40,465 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:19:40,465 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:19:40,465 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:19:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:19:44,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:19:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:19:44,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:19:44,344 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:19:44,344 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385898428]
[2022-02-24 01:19:44,344 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1385898428] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:19:44,344 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:19:44,344 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [113] imperfect sequences [] total 113
[2022-02-24 01:19:44,344 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724785908]
[2022-02-24 01:19:44,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:19:44,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states
[2022-02-24 01:19:44,344 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:19:44,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants.
[2022-02-24 01:19:44,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656
[2022-02-24 01:19:44,347 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand has 113 states, 113 states have (on average 2.0) internal successors, (226), 112 states have internal predecessors, (226), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:19:49,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:19:49,244 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions.
[2022-02-24 01:19:49,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states.
[2022-02-24 01:19:49,244 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.0) internal successors, (226), 112 states have internal predecessors, (226), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 230
[2022-02-24 01:19:49,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:19:49,245 INFO L225 Difference]: With dead ends: 240
[2022-02-24 01:19:49,245 INFO L226 Difference]: Without dead ends: 234
[2022-02-24 01:19:49,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6104 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=18648, Invalid=30858, Unknown=0, NotChecked=0, Total=49506
[2022-02-24 01:19:49,248 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 228 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:19:49,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 39 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:19:49,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states.
[2022-02-24 01:19:49,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233.
[2022-02-24 01:19:49,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 228 states have (on average 1.0043859649122806) internal successors, (229), 228 states have internal predecessors, (229), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:19:49,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions.
[2022-02-24 01:19:49,340 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 230
[2022-02-24 01:19:49,340 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:19:49,340 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions.
[2022-02-24 01:19:49,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.0) internal successors, (226), 112 states have internal predecessors, (226), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:19:49,341 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions.
[2022-02-24 01:19:49,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233
[2022-02-24 01:19:49,341 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:19:49,341 INFO L514 BasicCegarLoop]: trace histogram [110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:19:49,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110
[2022-02-24 01:19:49,342 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:19:49,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:19:49,342 INFO L85 PathProgramCache]: Analyzing trace with hash 209244502, now seen corresponding path program 110 times
[2022-02-24 01:19:49,342 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:19:49,342 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539326520]
[2022-02-24 01:19:49,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:19:49,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:19:49,354 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:19:49,354 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:19:49,354 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:19:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:19:53,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:19:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:19:53,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:19:53,247 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:19:53,247 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539326520]
[2022-02-24 01:19:53,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1539326520] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:19:53,247 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:19:53,248 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [114] imperfect sequences [] total 114
[2022-02-24 01:19:53,248 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301431325]
[2022-02-24 01:19:53,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:19:53,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states
[2022-02-24 01:19:53,248 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:19:53,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants.
[2022-02-24 01:19:53,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882
[2022-02-24 01:19:53,250 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand has 114 states, 114 states have (on average 2.0) internal successors, (228), 113 states have internal predecessors, (228), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:19:58,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:19:58,176 INFO L93 Difference]: Finished difference Result 242 states and 242 transitions.
[2022-02-24 01:19:58,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states.
[2022-02-24 01:19:58,177 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.0) internal successors, (228), 113 states have internal predecessors, (228), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 232
[2022-02-24 01:19:58,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:19:58,178 INFO L225 Difference]: With dead ends: 242
[2022-02-24 01:19:58,178 INFO L226 Difference]: Without dead ends: 236
[2022-02-24 01:19:58,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6215 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=18984, Invalid=31416, Unknown=0, NotChecked=0, Total=50400
[2022-02-24 01:19:58,181 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 230 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:19:58,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 44 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:19:58,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states.
[2022-02-24 01:19:58,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 235.
[2022-02-24 01:19:58,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 230 states have (on average 1.0043478260869565) internal successors, (231), 230 states have internal predecessors, (231), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:19:58,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions.
[2022-02-24 01:19:58,306 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 232
[2022-02-24 01:19:58,306 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:19:58,306 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions.
[2022-02-24 01:19:58,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 2.0) internal successors, (228), 113 states have internal predecessors, (228), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:19:58,306 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions.
[2022-02-24 01:19:58,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235
[2022-02-24 01:19:58,307 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:19:58,307 INFO L514 BasicCegarLoop]: trace histogram [111, 111, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:19:58,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111
[2022-02-24 01:19:58,307 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:19:58,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:19:58,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1653583880, now seen corresponding path program 111 times
[2022-02-24 01:19:58,308 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:19:58,308 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979146568]
[2022-02-24 01:19:58,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:19:58,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:19:58,319 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:19:58,319 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:19:58,319 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:19:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:20:02,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:20:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:20:02,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:20:02,536 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:20:02,536 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979146568]
[2022-02-24 01:20:02,536 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [979146568] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:20:02,536 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:20:02,536 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [115] imperfect sequences [] total 115
[2022-02-24 01:20:02,536 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746628333]
[2022-02-24 01:20:02,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:20:02,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states
[2022-02-24 01:20:02,536 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:20:02,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants.
[2022-02-24 01:20:02,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110
[2022-02-24 01:20:02,539 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand has 115 states, 115 states have (on average 2.0) internal successors, (230), 114 states have internal predecessors, (230), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:20:07,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:20:07,341 INFO L93 Difference]: Finished difference Result 244 states and 244 transitions.
[2022-02-24 01:20:07,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states.
[2022-02-24 01:20:07,342 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.0) internal successors, (230), 114 states have internal predecessors, (230), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 234
[2022-02-24 01:20:07,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:20:07,342 INFO L225 Difference]: With dead ends: 244
[2022-02-24 01:20:07,342 INFO L226 Difference]: Without dead ends: 238
[2022-02-24 01:20:07,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6327 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302
[2022-02-24 01:20:07,345 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 232 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:20:07,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 34 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:20:07,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states.
[2022-02-24 01:20:07,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 237.
[2022-02-24 01:20:07,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 232 states have (on average 1.0043103448275863) internal successors, (233), 232 states have internal predecessors, (233), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:20:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions.
[2022-02-24 01:20:07,448 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 234
[2022-02-24 01:20:07,448 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:20:07,448 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions.
[2022-02-24 01:20:07,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 2.0) internal successors, (230), 114 states have internal predecessors, (230), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:20:07,448 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions.
[2022-02-24 01:20:07,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237
[2022-02-24 01:20:07,449 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:20:07,449 INFO L514 BasicCegarLoop]: trace histogram [112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:20:07,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112
[2022-02-24 01:20:07,449 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:20:07,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:20:07,449 INFO L85 PathProgramCache]: Analyzing trace with hash -830296550, now seen corresponding path program 112 times
[2022-02-24 01:20:07,449 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:20:07,449 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416577667]
[2022-02-24 01:20:07,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:20:07,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:20:07,458 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:20:07,458 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:20:07,458 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:20:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:20:11,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:20:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:20:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:20:11,403 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:20:11,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416577667]
[2022-02-24 01:20:11,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1416577667] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:20:11,403 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:20:11,403 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [116] imperfect sequences [] total 116
[2022-02-24 01:20:11,403 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289726807]
[2022-02-24 01:20:11,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:20:11,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states
[2022-02-24 01:20:11,403 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:20:11,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants.
[2022-02-24 01:20:11,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6557, Invalid=6783, Unknown=0, NotChecked=0, Total=13340
[2022-02-24 01:20:11,406 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand has 116 states, 116 states have (on average 2.0) internal successors, (232), 115 states have internal predecessors, (232), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:20:16,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:20:16,344 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions.
[2022-02-24 01:20:16,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states.
[2022-02-24 01:20:16,345 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 2.0) internal successors, (232), 115 states have internal predecessors, (232), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 236
[2022-02-24 01:20:16,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:20:16,345 INFO L225 Difference]: With dead ends: 246
[2022-02-24 01:20:16,345 INFO L226 Difference]: Without dead ends: 240
[2022-02-24 01:20:16,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6440 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=19665, Invalid=32547, Unknown=0, NotChecked=0, Total=52212
[2022-02-24 01:20:16,348 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 234 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:20:16,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 59 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:20:16,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states.
[2022-02-24 01:20:16,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239.
[2022-02-24 01:20:16,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 234 states have (on average 1.0042735042735043) internal successors, (235), 234 states have internal predecessors, (235), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:20:16,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions.
[2022-02-24 01:20:16,449 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 236
[2022-02-24 01:20:16,449 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:20:16,449 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions.
[2022-02-24 01:20:16,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 2.0) internal successors, (232), 115 states have internal predecessors, (232), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:20:16,449 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions.
[2022-02-24 01:20:16,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239
[2022-02-24 01:20:16,450 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:20:16,450 INFO L514 BasicCegarLoop]: trace histogram [113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:20:16,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113
[2022-02-24 01:20:16,450 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:20:16,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:20:16,451 INFO L85 PathProgramCache]: Analyzing trace with hash 74845116, now seen corresponding path program 113 times
[2022-02-24 01:20:16,451 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:20:16,451 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541374438]
[2022-02-24 01:20:16,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:20:16,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:20:16,461 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:20:16,462 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:20:16,462 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:20:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:20:20,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:20:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:20:20,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:20:20,554 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:20:20,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541374438]
[2022-02-24 01:20:20,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1541374438] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:20:20,554 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:20:20,555 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [117] imperfect sequences [] total 117
[2022-02-24 01:20:20,555 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878873410]
[2022-02-24 01:20:20,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:20:20,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states
[2022-02-24 01:20:20,555 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:20:20,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants.
[2022-02-24 01:20:20,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572
[2022-02-24 01:20:20,558 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand has 117 states, 117 states have (on average 2.0) internal successors, (234), 116 states have internal predecessors, (234), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:20:25,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:20:25,468 INFO L93 Difference]: Finished difference Result 248 states and 248 transitions.
[2022-02-24 01:20:25,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states.
[2022-02-24 01:20:25,469 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.0) internal successors, (234), 116 states have internal predecessors, (234), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 238
[2022-02-24 01:20:25,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:20:25,469 INFO L225 Difference]: With dead ends: 248
[2022-02-24 01:20:25,470 INFO L226 Difference]: Without dead ends: 242
[2022-02-24 01:20:25,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6554 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=20010, Invalid=33120, Unknown=0, NotChecked=0, Total=53130
[2022-02-24 01:20:25,472 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 236 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:20:25,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 44 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:20:25,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states.
[2022-02-24 01:20:25,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 241.
[2022-02-24 01:20:25,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 236 states have (on average 1.0042372881355932) internal successors, (237), 236 states have internal predecessors, (237), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:20:25,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions.
[2022-02-24 01:20:25,565 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 238
[2022-02-24 01:20:25,565 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:20:25,565 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions.
[2022-02-24 01:20:25,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 2.0) internal successors, (234), 116 states have internal predecessors, (234), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:20:25,565 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions.
[2022-02-24 01:20:25,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241
[2022-02-24 01:20:25,566 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:20:25,566 INFO L514 BasicCegarLoop]: trace histogram [114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:20:25,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114
[2022-02-24 01:20:25,566 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:20:25,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:20:25,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1962374946, now seen corresponding path program 114 times
[2022-02-24 01:20:25,567 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:20:25,567 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921024995]
[2022-02-24 01:20:25,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:20:25,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:20:25,575 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:20:25,575 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:20:25,575 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:20:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:20:29,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:20:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:20:29,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:20:29,481 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:20:29,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921024995]
[2022-02-24 01:20:29,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [921024995] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:20:29,482 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:20:29,482 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [118] imperfect sequences [] total 118
[2022-02-24 01:20:29,482 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896455976]
[2022-02-24 01:20:29,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:20:29,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states
[2022-02-24 01:20:29,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:20:29,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants.
[2022-02-24 01:20:29,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806
[2022-02-24 01:20:29,485 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand has 118 states, 118 states have (on average 2.0) internal successors, (236), 117 states have internal predecessors, (236), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:20:34,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:20:34,540 INFO L93 Difference]: Finished difference Result 250 states and 250 transitions.
[2022-02-24 01:20:34,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states.
[2022-02-24 01:20:34,540 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.0) internal successors, (236), 117 states have internal predecessors, (236), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 240
[2022-02-24 01:20:34,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:20:34,540 INFO L225 Difference]: With dead ends: 250
[2022-02-24 01:20:34,541 INFO L226 Difference]: Without dead ends: 244
[2022-02-24 01:20:34,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6669 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=20358, Invalid=33698, Unknown=0, NotChecked=0, Total=54056
[2022-02-24 01:20:34,542 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 238 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:20:34,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 44 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:20:34,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states.
[2022-02-24 01:20:34,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 243.
[2022-02-24 01:20:34,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 238 states have (on average 1.004201680672269) internal successors, (239), 238 states have internal predecessors, (239), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:20:34,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions.
[2022-02-24 01:20:34,628 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 240
[2022-02-24 01:20:34,628 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:20:34,628 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions.
[2022-02-24 01:20:34,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 2.0) internal successors, (236), 117 states have internal predecessors, (236), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:20:34,629 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions.
[2022-02-24 01:20:34,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243
[2022-02-24 01:20:34,629 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:20:34,629 INFO L514 BasicCegarLoop]: trace histogram [115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:20:34,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115
[2022-02-24 01:20:34,629 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:20:34,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:20:34,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1225767552, now seen corresponding path program 115 times
[2022-02-24 01:20:34,630 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:20:34,630 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732844159]
[2022-02-24 01:20:34,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:20:34,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:20:34,638 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:20:34,639 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:20:34,639 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:20:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:20:38,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:20:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:20:38,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:20:38,611 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:20:38,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732844159]
[2022-02-24 01:20:38,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1732844159] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:20:38,612 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:20:38,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [119] imperfect sequences [] total 119
[2022-02-24 01:20:38,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74516809]
[2022-02-24 01:20:38,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:20:38,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states
[2022-02-24 01:20:38,612 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:20:38,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants.
[2022-02-24 01:20:38,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042
[2022-02-24 01:20:38,615 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand has 119 states, 119 states have (on average 2.0) internal successors, (238), 118 states have internal predecessors, (238), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:20:43,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:20:43,604 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions.
[2022-02-24 01:20:43,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states.
[2022-02-24 01:20:43,605 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.0) internal successors, (238), 118 states have internal predecessors, (238), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 242
[2022-02-24 01:20:43,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:20:43,605 INFO L225 Difference]: With dead ends: 252
[2022-02-24 01:20:43,605 INFO L226 Difference]: Without dead ends: 246
[2022-02-24 01:20:43,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6785 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=20709, Invalid=34281, Unknown=0, NotChecked=0, Total=54990
[2022-02-24 01:20:43,608 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 240 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:20:43,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 49 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:20:43,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states.
[2022-02-24 01:20:43,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 245.
[2022-02-24 01:20:43,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 240 states have (on average 1.0041666666666667) internal successors, (241), 240 states have internal predecessors, (241), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:20:43,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions.
[2022-02-24 01:20:43,692 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 242
[2022-02-24 01:20:43,692 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:20:43,692 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions.
[2022-02-24 01:20:43,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 2.0) internal successors, (238), 118 states have internal predecessors, (238), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:20:43,692 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions.
[2022-02-24 01:20:43,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245
[2022-02-24 01:20:43,693 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:20:43,693 INFO L514 BasicCegarLoop]: trace histogram [116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:20:43,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116
[2022-02-24 01:20:43,693 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:20:43,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:20:43,693 INFO L85 PathProgramCache]: Analyzing trace with hash -2015665758, now seen corresponding path program 116 times
[2022-02-24 01:20:43,693 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:20:43,693 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963755849]
[2022-02-24 01:20:43,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:20:43,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:20:43,702 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:20:43,702 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:20:43,702 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:20:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:20:47,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:20:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:20:47,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:20:47,787 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:20:47,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963755849]
[2022-02-24 01:20:47,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [963755849] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:20:47,788 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:20:47,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [120] imperfect sequences [] total 120
[2022-02-24 01:20:47,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771172355]
[2022-02-24 01:20:47,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:20:47,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states
[2022-02-24 01:20:47,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:20:47,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants.
[2022-02-24 01:20:47,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7023, Invalid=7257, Unknown=0, NotChecked=0, Total=14280
[2022-02-24 01:20:47,790 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand has 120 states, 120 states have (on average 2.0) internal successors, (240), 119 states have internal predecessors, (240), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:20:53,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:20:53,029 INFO L93 Difference]: Finished difference Result 254 states and 254 transitions.
[2022-02-24 01:20:53,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states.
[2022-02-24 01:20:53,030 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.0) internal successors, (240), 119 states have internal predecessors, (240), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 244
[2022-02-24 01:20:53,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:20:53,030 INFO L225 Difference]: With dead ends: 254
[2022-02-24 01:20:53,030 INFO L226 Difference]: Without dead ends: 248
[2022-02-24 01:20:53,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6902 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=21063, Invalid=34869, Unknown=0, NotChecked=0, Total=55932
[2022-02-24 01:20:53,033 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 242 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:20:53,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 44 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:20:53,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states.
[2022-02-24 01:20:53,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 247.
[2022-02-24 01:20:53,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 242 states have (on average 1.0041322314049588) internal successors, (243), 242 states have internal predecessors, (243), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:20:53,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions.
[2022-02-24 01:20:53,148 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 244
[2022-02-24 01:20:53,148 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:20:53,148 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions.
[2022-02-24 01:20:53,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 2.0) internal successors, (240), 119 states have internal predecessors, (240), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:20:53,148 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions.
[2022-02-24 01:20:53,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247
[2022-02-24 01:20:53,149 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:20:53,149 INFO L514 BasicCegarLoop]: trace histogram [117, 117, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:20:53,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117
[2022-02-24 01:20:53,149 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:20:53,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:20:53,150 INFO L85 PathProgramCache]: Analyzing trace with hash -898630332, now seen corresponding path program 117 times
[2022-02-24 01:20:53,150 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:20:53,150 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352136752]
[2022-02-24 01:20:53,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:20:53,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:20:53,164 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:20:53,164 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:20:53,164 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:20:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:20:57,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:20:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:20:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:20:57,282 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:20:57,282 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352136752]
[2022-02-24 01:20:57,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [352136752] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:20:57,282 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:20:57,283 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [121] imperfect sequences [] total 121
[2022-02-24 01:20:57,283 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849089147]
[2022-02-24 01:20:57,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:20:57,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states
[2022-02-24 01:20:57,283 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:20:57,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants.
[2022-02-24 01:20:57,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7142, Invalid=7378, Unknown=0, NotChecked=0, Total=14520
[2022-02-24 01:20:57,285 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand has 121 states, 121 states have (on average 2.0) internal successors, (242), 120 states have internal predecessors, (242), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:21:02,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:21:02,561 INFO L93 Difference]: Finished difference Result 256 states and 256 transitions.
[2022-02-24 01:21:02,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states.
[2022-02-24 01:21:02,561 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 2.0) internal successors, (242), 120 states have internal predecessors, (242), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 246
[2022-02-24 01:21:02,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:21:02,562 INFO L225 Difference]: With dead ends: 256
[2022-02-24 01:21:02,562 INFO L226 Difference]: Without dead ends: 250
[2022-02-24 01:21:02,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7020 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=21420, Invalid=35462, Unknown=0, NotChecked=0, Total=56882
[2022-02-24 01:21:02,564 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 244 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:21:02,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 34 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:21:02,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states.
[2022-02-24 01:21:02,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249.
[2022-02-24 01:21:02,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 244 states have (on average 1.0040983606557377) internal successors, (245), 244 states have internal predecessors, (245), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:21:02,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions.
[2022-02-24 01:21:02,653 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 246
[2022-02-24 01:21:02,653 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:21:02,653 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions.
[2022-02-24 01:21:02,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 2.0) internal successors, (242), 120 states have internal predecessors, (242), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:21:02,653 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions.
[2022-02-24 01:21:02,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249
[2022-02-24 01:21:02,654 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:21:02,654 INFO L514 BasicCegarLoop]: trace histogram [118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:21:02,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118
[2022-02-24 01:21:02,654 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:21:02,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:21:02,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1169409946, now seen corresponding path program 118 times
[2022-02-24 01:21:02,654 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:21:02,654 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804831470]
[2022-02-24 01:21:02,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:21:02,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:21:02,663 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:21:02,663 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:21:02,664 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:21:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:21:06,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:21:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:21:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:21:06,839 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:21:06,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804831470]
[2022-02-24 01:21:06,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1804831470] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:21:06,839 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:21:06,839 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [122] imperfect sequences [] total 122
[2022-02-24 01:21:06,839 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396591725]
[2022-02-24 01:21:06,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:21:06,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states
[2022-02-24 01:21:06,839 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:21:06,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants.
[2022-02-24 01:21:06,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7262, Invalid=7500, Unknown=0, NotChecked=0, Total=14762
[2022-02-24 01:21:06,841 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand has 122 states, 122 states have (on average 2.0) internal successors, (244), 121 states have internal predecessors, (244), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:21:11,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:21:11,968 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions.
[2022-02-24 01:21:11,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states.
[2022-02-24 01:21:11,969 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 2.0) internal successors, (244), 121 states have internal predecessors, (244), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 248
[2022-02-24 01:21:11,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:21:11,969 INFO L225 Difference]: With dead ends: 258
[2022-02-24 01:21:11,969 INFO L226 Difference]: Without dead ends: 252
[2022-02-24 01:21:11,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7139 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=21780, Invalid=36060, Unknown=0, NotChecked=0, Total=57840
[2022-02-24 01:21:11,972 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 246 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:21:11,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 34 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:21:11,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states.
[2022-02-24 01:21:12,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 251.
[2022-02-24 01:21:12,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 246 states have (on average 1.0040650406504066) internal successors, (247), 246 states have internal predecessors, (247), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:21:12,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions.
[2022-02-24 01:21:12,065 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 248
[2022-02-24 01:21:12,065 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:21:12,065 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions.
[2022-02-24 01:21:12,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 2.0) internal successors, (244), 121 states have internal predecessors, (244), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:21:12,066 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions.
[2022-02-24 01:21:12,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251
[2022-02-24 01:21:12,066 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:21:12,066 INFO L514 BasicCegarLoop]: trace histogram [119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:21:12,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119
[2022-02-24 01:21:12,067 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:21:12,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:21:12,067 INFO L85 PathProgramCache]: Analyzing trace with hash 604386056, now seen corresponding path program 119 times
[2022-02-24 01:21:12,067 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:21:12,067 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886094807]
[2022-02-24 01:21:12,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:21:12,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:21:12,076 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:21:12,076 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:21:12,076 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:21:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:21:16,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:21:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:21:16,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:21:16,471 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:21:16,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886094807]
[2022-02-24 01:21:16,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [886094807] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:21:16,471 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:21:16,471 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [123] imperfect sequences [] total 123
[2022-02-24 01:21:16,471 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500673973]
[2022-02-24 01:21:16,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:21:16,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states
[2022-02-24 01:21:16,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:21:16,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants.
[2022-02-24 01:21:16,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006
[2022-02-24 01:21:16,475 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand has 123 states, 123 states have (on average 2.0) internal successors, (246), 122 states have internal predecessors, (246), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:21:21,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:21:21,858 INFO L93 Difference]: Finished difference Result 260 states and 260 transitions.
[2022-02-24 01:21:21,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states.
[2022-02-24 01:21:21,858 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 2.0) internal successors, (246), 122 states have internal predecessors, (246), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 250
[2022-02-24 01:21:21,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:21:21,859 INFO L225 Difference]: With dead ends: 260
[2022-02-24 01:21:21,859 INFO L226 Difference]: Without dead ends: 254
[2022-02-24 01:21:21,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7259 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=22143, Invalid=36663, Unknown=0, NotChecked=0, Total=58806
[2022-02-24 01:21:21,863 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 248 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:21:21,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 49 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:21:21,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states.
[2022-02-24 01:21:21,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 253.
[2022-02-24 01:21:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 248 states have (on average 1.0040322580645162) internal successors, (249), 248 states have internal predecessors, (249), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:21:21,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions.
[2022-02-24 01:21:21,996 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 250
[2022-02-24 01:21:21,996 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:21:21,996 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions.
[2022-02-24 01:21:21,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 2.0) internal successors, (246), 122 states have internal predecessors, (246), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:21:21,996 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions.
[2022-02-24 01:21:21,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253
[2022-02-24 01:21:21,997 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:21:21,997 INFO L514 BasicCegarLoop]: trace histogram [120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:21:21,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120
[2022-02-24 01:21:21,997 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:21:21,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:21:21,997 INFO L85 PathProgramCache]: Analyzing trace with hash 120327466, now seen corresponding path program 120 times
[2022-02-24 01:21:21,997 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:21:21,997 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441663649]
[2022-02-24 01:21:21,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:21:21,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:21:22,007 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:21:22,007 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:21:22,007 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:21:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:21:26,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:21:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:21:26,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:21:26,378 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:21:26,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441663649]
[2022-02-24 01:21:26,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [441663649] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:21:26,378 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:21:26,378 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [124] imperfect sequences [] total 124
[2022-02-24 01:21:26,378 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40908722]
[2022-02-24 01:21:26,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:21:26,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states
[2022-02-24 01:21:26,379 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:21:26,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants.
[2022-02-24 01:21:26,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7505, Invalid=7747, Unknown=0, NotChecked=0, Total=15252
[2022-02-24 01:21:26,382 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand has 124 states, 124 states have (on average 2.0) internal successors, (248), 123 states have internal predecessors, (248), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:21:31,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:21:31,742 INFO L93 Difference]: Finished difference Result 262 states and 262 transitions.
[2022-02-24 01:21:31,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states.
[2022-02-24 01:21:31,743 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 2.0) internal successors, (248), 123 states have internal predecessors, (248), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 252
[2022-02-24 01:21:31,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:21:31,743 INFO L225 Difference]: With dead ends: 262
[2022-02-24 01:21:31,744 INFO L226 Difference]: Without dead ends: 256
[2022-02-24 01:21:31,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7380 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=22509, Invalid=37271, Unknown=0, NotChecked=0, Total=59780
[2022-02-24 01:21:31,747 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 250 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:21:31,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 44 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:21:31,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states.
[2022-02-24 01:21:31,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 255.
[2022-02-24 01:21:31,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 250 states have (on average 1.004) internal successors, (251), 250 states have internal predecessors, (251), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:21:31,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions.
[2022-02-24 01:21:31,855 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 252
[2022-02-24 01:21:31,855 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:21:31,855 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions.
[2022-02-24 01:21:31,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 2.0) internal successors, (248), 123 states have internal predecessors, (248), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:21:31,855 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions.
[2022-02-24 01:21:31,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255
[2022-02-24 01:21:31,856 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:21:31,856 INFO L514 BasicCegarLoop]: trace histogram [121, 121, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:21:31,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121
[2022-02-24 01:21:31,856 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:21:31,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:21:31,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1203509556, now seen corresponding path program 121 times
[2022-02-24 01:21:31,857 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:21:31,857 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770047714]
[2022-02-24 01:21:31,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:21:31,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:21:31,867 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:21:31,867 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:21:31,867 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:21:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:21:36,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:21:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:21:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:21:36,318 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:21:36,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770047714]
[2022-02-24 01:21:36,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [770047714] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:21:36,318 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:21:36,318 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [125] imperfect sequences [] total 125
[2022-02-24 01:21:36,318 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344896613]
[2022-02-24 01:21:36,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:21:36,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states
[2022-02-24 01:21:36,318 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:21:36,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants.
[2022-02-24 01:21:36,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7628, Invalid=7872, Unknown=0, NotChecked=0, Total=15500
[2022-02-24 01:21:36,321 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand has 125 states, 125 states have (on average 2.0) internal successors, (250), 124 states have internal predecessors, (250), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:21:41,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:21:41,980 INFO L93 Difference]: Finished difference Result 264 states and 264 transitions.
[2022-02-24 01:21:41,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states.
[2022-02-24 01:21:41,981 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 2.0) internal successors, (250), 124 states have internal predecessors, (250), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 254
[2022-02-24 01:21:41,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:21:41,982 INFO L225 Difference]: With dead ends: 264
[2022-02-24 01:21:41,982 INFO L226 Difference]: Without dead ends: 258
[2022-02-24 01:21:41,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7502 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=22878, Invalid=37884, Unknown=0, NotChecked=0, Total=60762
[2022-02-24 01:21:41,986 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 252 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-24 01:21:41,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 39 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-24 01:21:41,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states.
[2022-02-24 01:21:42,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257.
[2022-02-24 01:21:42,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 252 states have (on average 1.003968253968254) internal successors, (253), 252 states have internal predecessors, (253), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:21:42,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions.
[2022-02-24 01:21:42,123 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 254
[2022-02-24 01:21:42,123 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:21:42,123 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions.
[2022-02-24 01:21:42,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 2.0) internal successors, (250), 124 states have internal predecessors, (250), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:21:42,124 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions.
[2022-02-24 01:21:42,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257
[2022-02-24 01:21:42,125 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:21:42,125 INFO L514 BasicCegarLoop]: trace histogram [122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:21:42,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122
[2022-02-24 01:21:42,125 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:21:42,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:21:42,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2100568082, now seen corresponding path program 122 times
[2022-02-24 01:21:42,125 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:21:42,126 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156649961]
[2022-02-24 01:21:42,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:21:42,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:21:42,138 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:21:42,138 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:21:42,138 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:21:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:21:46,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:21:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:21:46,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:21:46,609 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:21:46,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156649961]
[2022-02-24 01:21:46,610 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [156649961] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:21:46,610 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:21:46,610 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [126] imperfect sequences [] total 126
[2022-02-24 01:21:46,610 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54147946]
[2022-02-24 01:21:46,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:21:46,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states
[2022-02-24 01:21:46,610 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:21:46,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants.
[2022-02-24 01:21:46,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7752, Invalid=7998, Unknown=0, NotChecked=0, Total=15750
[2022-02-24 01:21:46,613 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand has 126 states, 126 states have (on average 2.0) internal successors, (252), 125 states have internal predecessors, (252), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:21:52,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:21:52,168 INFO L93 Difference]: Finished difference Result 266 states and 266 transitions.
[2022-02-24 01:21:52,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states.
[2022-02-24 01:21:52,168 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 2.0) internal successors, (252), 125 states have internal predecessors, (252), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 256
[2022-02-24 01:21:52,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:21:52,169 INFO L225 Difference]: With dead ends: 266
[2022-02-24 01:21:52,169 INFO L226 Difference]: Without dead ends: 260
[2022-02-24 01:21:52,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7625 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=23250, Invalid=38502, Unknown=0, NotChecked=0, Total=61752
[2022-02-24 01:21:52,172 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 254 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:21:52,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 59 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:21:52,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states.
[2022-02-24 01:21:52,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 259.
[2022-02-24 01:21:52,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 254 states have (on average 1.0039370078740157) internal successors, (255), 254 states have internal predecessors, (255), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:21:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions.
[2022-02-24 01:21:52,278 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 256
[2022-02-24 01:21:52,278 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:21:52,279 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions.
[2022-02-24 01:21:52,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 2.0) internal successors, (252), 125 states have internal predecessors, (252), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:21:52,279 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions.
[2022-02-24 01:21:52,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259
[2022-02-24 01:21:52,279 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:21:52,279 INFO L514 BasicCegarLoop]: trace histogram [123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:21:52,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123
[2022-02-24 01:21:52,280 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:21:52,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:21:52,280 INFO L85 PathProgramCache]: Analyzing trace with hash -885385072, now seen corresponding path program 123 times
[2022-02-24 01:21:52,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:21:52,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128858856]
[2022-02-24 01:21:52,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:21:52,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:21:52,290 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:21:52,290 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:21:52,290 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:21:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:21:56,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:21:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:21:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:21:56,896 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:21:56,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128858856]
[2022-02-24 01:21:56,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2128858856] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:21:56,896 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:21:56,896 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [127] imperfect sequences [] total 127
[2022-02-24 01:21:56,896 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229114842]
[2022-02-24 01:21:56,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:21:56,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states
[2022-02-24 01:21:56,896 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:21:56,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants.
[2022-02-24 01:21:56,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002
[2022-02-24 01:21:56,899 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand has 127 states, 127 states have (on average 2.0) internal successors, (254), 126 states have internal predecessors, (254), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:22:02,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:22:02,691 INFO L93 Difference]: Finished difference Result 268 states and 268 transitions.
[2022-02-24 01:22:02,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states.
[2022-02-24 01:22:02,692 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 127 states have (on average 2.0) internal successors, (254), 126 states have internal predecessors, (254), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 258
[2022-02-24 01:22:02,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:22:02,693 INFO L225 Difference]: With dead ends: 268
[2022-02-24 01:22:02,693 INFO L226 Difference]: Without dead ends: 262
[2022-02-24 01:22:02,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7749 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=23625, Invalid=39125, Unknown=0, NotChecked=0, Total=62750
[2022-02-24 01:22:02,697 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 256 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:22:02,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 49 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:22:02,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states.
[2022-02-24 01:22:02,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 261.
[2022-02-24 01:22:02,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 256 states have (on average 1.00390625) internal successors, (257), 256 states have internal predecessors, (257), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:22:02,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 261 transitions.
[2022-02-24 01:22:02,839 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 261 transitions. Word has length 258
[2022-02-24 01:22:02,839 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:22:02,839 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 261 transitions.
[2022-02-24 01:22:02,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 127 states have (on average 2.0) internal successors, (254), 126 states have internal predecessors, (254), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:22:02,840 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 261 transitions.
[2022-02-24 01:22:02,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261
[2022-02-24 01:22:02,840 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:22:02,840 INFO L514 BasicCegarLoop]: trace histogram [124, 124, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:22:02,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124
[2022-02-24 01:22:02,841 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:22:02,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:22:02,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1325616974, now seen corresponding path program 124 times
[2022-02-24 01:22:02,841 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:22:02,841 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76209304]
[2022-02-24 01:22:02,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:22:02,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:22:02,853 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:22:02,853 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:22:02,853 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:22:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:22:07,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:22:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:22:07,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:22:07,630 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:22:07,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76209304]
[2022-02-24 01:22:07,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [76209304] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:22:07,630 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:22:07,630 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [128] imperfect sequences [] total 128
[2022-02-24 01:22:07,630 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152447837]
[2022-02-24 01:22:07,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:22:07,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states
[2022-02-24 01:22:07,631 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:22:07,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants.
[2022-02-24 01:22:07,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8003, Invalid=8253, Unknown=0, NotChecked=0, Total=16256
[2022-02-24 01:22:07,633 INFO L87 Difference]: Start difference. First operand 261 states and 261 transitions. Second operand has 128 states, 128 states have (on average 2.0) internal successors, (256), 127 states have internal predecessors, (256), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:22:13,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:22:13,090 INFO L93 Difference]: Finished difference Result 270 states and 270 transitions.
[2022-02-24 01:22:13,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states.
[2022-02-24 01:22:13,090 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.0) internal successors, (256), 127 states have internal predecessors, (256), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 260
[2022-02-24 01:22:13,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:22:13,091 INFO L225 Difference]: With dead ends: 270
[2022-02-24 01:22:13,091 INFO L226 Difference]: Without dead ends: 264
[2022-02-24 01:22:13,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7874 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=24003, Invalid=39753, Unknown=0, NotChecked=0, Total=63756
[2022-02-24 01:22:13,094 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 258 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:22:13,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 44 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:22:13,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states.
[2022-02-24 01:22:13,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 263.
[2022-02-24 01:22:13,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 258 states have (on average 1.003875968992248) internal successors, (259), 258 states have internal predecessors, (259), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:22:13,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions.
[2022-02-24 01:22:13,203 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 260
[2022-02-24 01:22:13,204 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:22:13,204 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions.
[2022-02-24 01:22:13,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.0) internal successors, (256), 127 states have internal predecessors, (256), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:22:13,204 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions.
[2022-02-24 01:22:13,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263
[2022-02-24 01:22:13,205 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:22:13,205 INFO L514 BasicCegarLoop]: trace histogram [125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:22:13,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125
[2022-02-24 01:22:13,205 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:22:13,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:22:13,205 INFO L85 PathProgramCache]: Analyzing trace with hash 813287508, now seen corresponding path program 125 times
[2022-02-24 01:22:13,205 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:22:13,205 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197982630]
[2022-02-24 01:22:13,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:22:13,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:22:13,215 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:22:13,215 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:22:13,215 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:22:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:22:17,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:22:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:22:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:22:17,870 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:22:17,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197982630]
[2022-02-24 01:22:17,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1197982630] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:22:17,871 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:22:17,871 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [129] imperfect sequences [] total 129
[2022-02-24 01:22:17,871 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293167468]
[2022-02-24 01:22:17,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:22:17,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 129 states
[2022-02-24 01:22:17,871 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:22:17,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants.
[2022-02-24 01:22:17,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8130, Invalid=8382, Unknown=0, NotChecked=0, Total=16512
[2022-02-24 01:22:17,874 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand has 129 states, 129 states have (on average 2.0) internal successors, (258), 128 states have internal predecessors, (258), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:22:23,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:22:23,595 INFO L93 Difference]: Finished difference Result 272 states and 272 transitions.
[2022-02-24 01:22:23,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states.
[2022-02-24 01:22:23,595 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 2.0) internal successors, (258), 128 states have internal predecessors, (258), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 262
[2022-02-24 01:22:23,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:22:23,596 INFO L225 Difference]: With dead ends: 272
[2022-02-24 01:22:23,596 INFO L226 Difference]: Without dead ends: 266
[2022-02-24 01:22:23,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8000 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=24384, Invalid=40386, Unknown=0, NotChecked=0, Total=64770
[2022-02-24 01:22:23,598 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 260 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:22:23,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 44 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:22:23,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states.
[2022-02-24 01:22:23,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 265.
[2022-02-24 01:22:23,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 260 states have (on average 1.0038461538461538) internal successors, (261), 260 states have internal predecessors, (261), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:22:23,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 265 transitions.
[2022-02-24 01:22:23,695 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 265 transitions. Word has length 262
[2022-02-24 01:22:23,695 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:22:23,695 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 265 transitions.
[2022-02-24 01:22:23,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 2.0) internal successors, (258), 128 states have internal predecessors, (258), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:22:23,696 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 265 transitions.
[2022-02-24 01:22:23,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265
[2022-02-24 01:22:23,696 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:22:23,696 INFO L514 BasicCegarLoop]: trace histogram [126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:22:23,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126
[2022-02-24 01:22:23,697 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:22:23,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:22:23,697 INFO L85 PathProgramCache]: Analyzing trace with hash -988840074, now seen corresponding path program 126 times
[2022-02-24 01:22:23,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:22:23,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353315976]
[2022-02-24 01:22:23,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:22:23,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:22:23,708 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:22:23,708 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:22:23,708 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:22:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:22:28,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:22:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:22:28,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:22:28,666 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:22:28,666 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353315976]
[2022-02-24 01:22:28,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1353315976] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:22:28,666 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:22:28,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [130] imperfect sequences [] total 130
[2022-02-24 01:22:28,667 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301327053]
[2022-02-24 01:22:28,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:22:28,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states
[2022-02-24 01:22:28,667 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:22:28,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants.
[2022-02-24 01:22:28,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8258, Invalid=8512, Unknown=0, NotChecked=0, Total=16770
[2022-02-24 01:22:28,680 INFO L87 Difference]: Start difference. First operand 265 states and 265 transitions. Second operand has 130 states, 130 states have (on average 2.0) internal successors, (260), 129 states have internal predecessors, (260), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:22:34,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:22:34,539 INFO L93 Difference]: Finished difference Result 274 states and 274 transitions.
[2022-02-24 01:22:34,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states.
[2022-02-24 01:22:34,540 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.0) internal successors, (260), 129 states have internal predecessors, (260), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 264
[2022-02-24 01:22:34,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:22:34,540 INFO L225 Difference]: With dead ends: 274
[2022-02-24 01:22:34,541 INFO L226 Difference]: Without dead ends: 268
[2022-02-24 01:22:34,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8127 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=24768, Invalid=41024, Unknown=0, NotChecked=0, Total=65792
[2022-02-24 01:22:34,544 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 262 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-24 01:22:34,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 24 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-24 01:22:34,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states.
[2022-02-24 01:22:34,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 267.
[2022-02-24 01:22:34,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 262 states have (on average 1.0038167938931297) internal successors, (263), 262 states have internal predecessors, (263), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:22:34,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions.
[2022-02-24 01:22:34,647 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 264
[2022-02-24 01:22:34,647 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:22:34,647 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions.
[2022-02-24 01:22:34,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.0) internal successors, (260), 129 states have internal predecessors, (260), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:22:34,648 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions.
[2022-02-24 01:22:34,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267
[2022-02-24 01:22:34,648 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:22:34,648 INFO L514 BasicCegarLoop]: trace histogram [127, 127, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:22:34,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127
[2022-02-24 01:22:34,649 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:22:34,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:22:34,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1961626088, now seen corresponding path program 127 times
[2022-02-24 01:22:34,649 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:22:34,649 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352941147]
[2022-02-24 01:22:34,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:22:34,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:22:34,659 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:22:34,659 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:22:34,659 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:22:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:22:39,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:22:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:22:39,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:22:39,655 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:22:39,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352941147]
[2022-02-24 01:22:39,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1352941147] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:22:39,655 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:22:39,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [131] imperfect sequences [] total 131
[2022-02-24 01:22:39,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955800450]
[2022-02-24 01:22:39,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:22:39,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states
[2022-02-24 01:22:39,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:22:39,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants.
[2022-02-24 01:22:39,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030
[2022-02-24 01:22:39,658 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand has 131 states, 131 states have (on average 2.0) internal successors, (262), 130 states have internal predecessors, (262), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:22:45,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:22:45,476 INFO L93 Difference]: Finished difference Result 276 states and 276 transitions.
[2022-02-24 01:22:45,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states.
[2022-02-24 01:22:45,477 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.0) internal successors, (262), 130 states have internal predecessors, (262), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 266
[2022-02-24 01:22:45,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:22:45,477 INFO L225 Difference]: With dead ends: 276
[2022-02-24 01:22:45,477 INFO L226 Difference]: Without dead ends: 270
[2022-02-24 01:22:45,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8255 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=25155, Invalid=41667, Unknown=0, NotChecked=0, Total=66822
[2022-02-24 01:22:45,480 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 264 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:22:45,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 44 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:22:45,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states.
[2022-02-24 01:22:45,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 269.
[2022-02-24 01:22:45,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 264 states have (on average 1.003787878787879) internal successors, (265), 264 states have internal predecessors, (265), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:22:45,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 269 transitions.
[2022-02-24 01:22:45,596 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 269 transitions. Word has length 266
[2022-02-24 01:22:45,597 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:22:45,597 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 269 transitions.
[2022-02-24 01:22:45,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 2.0) internal successors, (262), 130 states have internal predecessors, (262), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:22:45,597 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 269 transitions.
[2022-02-24 01:22:45,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269
[2022-02-24 01:22:45,598 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:22:45,598 INFO L514 BasicCegarLoop]: trace histogram [128, 128, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:22:45,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128
[2022-02-24 01:22:45,598 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:22:45,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:22:45,598 INFO L85 PathProgramCache]: Analyzing trace with hash -506115014, now seen corresponding path program 128 times
[2022-02-24 01:22:45,598 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:22:45,598 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262170116]
[2022-02-24 01:22:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:22:45,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:22:45,608 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:22:45,608 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:22:45,608 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:22:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:22:50,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:22:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:22:50,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:22:50,621 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:22:50,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262170116]
[2022-02-24 01:22:50,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [262170116] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:22:50,622 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:22:50,622 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [132] imperfect sequences [] total 132
[2022-02-24 01:22:50,622 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576364453]
[2022-02-24 01:22:50,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:22:50,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states
[2022-02-24 01:22:50,622 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:22:50,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants.
[2022-02-24 01:22:50,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8517, Invalid=8775, Unknown=0, NotChecked=0, Total=17292
[2022-02-24 01:22:50,625 INFO L87 Difference]: Start difference. First operand 269 states and 269 transitions. Second operand has 132 states, 132 states have (on average 2.0) internal successors, (264), 131 states have internal predecessors, (264), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:22:56,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:22:56,608 INFO L93 Difference]: Finished difference Result 278 states and 278 transitions.
[2022-02-24 01:22:56,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states.
[2022-02-24 01:22:56,609 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 2.0) internal successors, (264), 131 states have internal predecessors, (264), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 268
[2022-02-24 01:22:56,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:22:56,609 INFO L225 Difference]: With dead ends: 278
[2022-02-24 01:22:56,609 INFO L226 Difference]: Without dead ends: 272
[2022-02-24 01:22:56,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8384 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=25545, Invalid=42315, Unknown=0, NotChecked=0, Total=67860
[2022-02-24 01:22:56,612 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 266 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:22:56,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 44 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:22:56,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states.
[2022-02-24 01:22:56,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 271.
[2022-02-24 01:22:56,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 266 states have (on average 1.0037593984962405) internal successors, (267), 266 states have internal predecessors, (267), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:22:56,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions.
[2022-02-24 01:22:56,715 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 268
[2022-02-24 01:22:56,715 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:22:56,715 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions.
[2022-02-24 01:22:56,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 2.0) internal successors, (264), 131 states have internal predecessors, (264), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:22:56,716 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions.
[2022-02-24 01:22:56,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271
[2022-02-24 01:22:56,716 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:22:56,716 INFO L514 BasicCegarLoop]: trace histogram [129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:22:56,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129
[2022-02-24 01:22:56,717 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:22:56,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:22:56,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1919311396, now seen corresponding path program 129 times
[2022-02-24 01:22:56,717 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:22:56,717 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177195207]
[2022-02-24 01:22:56,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:22:56,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:22:56,727 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:22:56,727 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:22:56,727 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:22:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:23:01,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:23:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:23:01,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:23:01,802 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:23:01,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177195207]
[2022-02-24 01:23:01,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1177195207] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:23:01,802 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:23:01,802 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [133] imperfect sequences [] total 133
[2022-02-24 01:23:01,803 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777999035]
[2022-02-24 01:23:01,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:23:01,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 133 states
[2022-02-24 01:23:01,803 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:23:01,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants.
[2022-02-24 01:23:01,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8648, Invalid=8908, Unknown=0, NotChecked=0, Total=17556
[2022-02-24 01:23:01,805 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand has 133 states, 133 states have (on average 2.0) internal successors, (266), 132 states have internal predecessors, (266), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:23:08,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:23:08,110 INFO L93 Difference]: Finished difference Result 280 states and 280 transitions.
[2022-02-24 01:23:08,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states.
[2022-02-24 01:23:08,111 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 2.0) internal successors, (266), 132 states have internal predecessors, (266), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 270
[2022-02-24 01:23:08,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:23:08,111 INFO L225 Difference]: With dead ends: 280
[2022-02-24 01:23:08,111 INFO L226 Difference]: Without dead ends: 274
[2022-02-24 01:23:08,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8514 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=25938, Invalid=42968, Unknown=0, NotChecked=0, Total=68906
[2022-02-24 01:23:08,115 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 268 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:23:08,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 34 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:23:08,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states.
[2022-02-24 01:23:08,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 273.
[2022-02-24 01:23:08,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 268 states have (on average 1.0037313432835822) internal successors, (269), 268 states have internal predecessors, (269), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:23:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 273 transitions.
[2022-02-24 01:23:08,232 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 273 transitions. Word has length 270
[2022-02-24 01:23:08,232 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:23:08,232 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 273 transitions.
[2022-02-24 01:23:08,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 2.0) internal successors, (266), 132 states have internal predecessors, (266), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:23:08,232 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 273 transitions.
[2022-02-24 01:23:08,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273
[2022-02-24 01:23:08,233 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:23:08,233 INFO L514 BasicCegarLoop]: trace histogram [130, 130, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:23:08,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130
[2022-02-24 01:23:08,233 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:23:08,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:23:08,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1503598334, now seen corresponding path program 130 times
[2022-02-24 01:23:08,233 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:23:08,233 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946675618]
[2022-02-24 01:23:08,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:23:08,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:23:08,243 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:23:08,243 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:23:08,243 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:23:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:23:13,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:23:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:23:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:23:13,213 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:23:13,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946675618]
[2022-02-24 01:23:13,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1946675618] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:23:13,213 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:23:13,213 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [134] imperfect sequences [] total 134
[2022-02-24 01:23:13,213 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261779531]
[2022-02-24 01:23:13,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:23:13,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 134 states
[2022-02-24 01:23:13,214 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:23:13,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants.
[2022-02-24 01:23:13,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8780, Invalid=9042, Unknown=0, NotChecked=0, Total=17822
[2022-02-24 01:23:13,216 INFO L87 Difference]: Start difference. First operand 273 states and 273 transitions. Second operand has 134 states, 134 states have (on average 2.0) internal successors, (268), 133 states have internal predecessors, (268), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:23:19,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:23:19,264 INFO L93 Difference]: Finished difference Result 282 states and 282 transitions.
[2022-02-24 01:23:19,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states.
[2022-02-24 01:23:19,264 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 2.0) internal successors, (268), 133 states have internal predecessors, (268), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 272
[2022-02-24 01:23:19,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:23:19,265 INFO L225 Difference]: With dead ends: 282
[2022-02-24 01:23:19,265 INFO L226 Difference]: Without dead ends: 276
[2022-02-24 01:23:19,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8645 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=26334, Invalid=43626, Unknown=0, NotChecked=0, Total=69960
[2022-02-24 01:23:19,267 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 270 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-24 01:23:19,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 49 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-24 01:23:19,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states.
[2022-02-24 01:23:19,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275.
[2022-02-24 01:23:19,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 270 states have (on average 1.0037037037037038) internal successors, (271), 270 states have internal predecessors, (271), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:23:19,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions.
[2022-02-24 01:23:19,388 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 272
[2022-02-24 01:23:19,389 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:23:19,389 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions.
[2022-02-24 01:23:19,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 2.0) internal successors, (268), 133 states have internal predecessors, (268), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:23:19,389 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions.
[2022-02-24 01:23:19,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275
[2022-02-24 01:23:19,389 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:23:19,390 INFO L514 BasicCegarLoop]: trace histogram [131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:23:19,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131
[2022-02-24 01:23:19,390 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:23:19,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:23:19,390 INFO L85 PathProgramCache]: Analyzing trace with hash 974900128, now seen corresponding path program 131 times
[2022-02-24 01:23:19,390 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:23:19,390 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788135287]
[2022-02-24 01:23:19,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:23:19,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:23:19,400 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:23:19,400 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:23:19,400 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:23:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:23:24,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:23:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:23:24,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:23:24,483 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:23:24,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788135287]
[2022-02-24 01:23:24,483 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1788135287] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:23:24,483 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:23:24,483 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [135] imperfect sequences [] total 135
[2022-02-24 01:23:24,483 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30965950]
[2022-02-24 01:23:24,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:23:24,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 135 states
[2022-02-24 01:23:24,483 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:23:24,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants.
[2022-02-24 01:23:24,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090
[2022-02-24 01:23:24,485 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand has 135 states, 135 states have (on average 2.0) internal successors, (270), 134 states have internal predecessors, (270), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:23:30,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:23:30,957 INFO L93 Difference]: Finished difference Result 284 states and 284 transitions.
[2022-02-24 01:23:30,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states.
[2022-02-24 01:23:30,957 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 2.0) internal successors, (270), 134 states have internal predecessors, (270), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 274
[2022-02-24 01:23:30,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:23:30,958 INFO L225 Difference]: With dead ends: 284
[2022-02-24 01:23:30,958 INFO L226 Difference]: Without dead ends: 278
[2022-02-24 01:23:30,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8777 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=26733, Invalid=44289, Unknown=0, NotChecked=0, Total=71022
[2022-02-24 01:23:30,962 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 272 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-24 01:23:30,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 39 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-24 01:23:30,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states.
[2022-02-24 01:23:31,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 277.
[2022-02-24 01:23:31,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 272 states have (on average 1.0036764705882353) internal successors, (273), 272 states have internal predecessors, (273), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:23:31,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 277 transitions.
[2022-02-24 01:23:31,101 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 277 transitions. Word has length 274
[2022-02-24 01:23:31,102 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:23:31,102 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 277 transitions.
[2022-02-24 01:23:31,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 135 states have (on average 2.0) internal successors, (270), 134 states have internal predecessors, (270), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:23:31,102 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 277 transitions.
[2022-02-24 01:23:31,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277
[2022-02-24 01:23:31,103 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:23:31,103 INFO L514 BasicCegarLoop]: trace histogram [132, 132, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:23:31,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132
[2022-02-24 01:23:31,103 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:23:31,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:23:31,103 INFO L85 PathProgramCache]: Analyzing trace with hash -297934910, now seen corresponding path program 132 times
[2022-02-24 01:23:31,103 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:23:31,103 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568395441]
[2022-02-24 01:23:31,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:23:31,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:23:31,114 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:23:31,114 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:23:31,114 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:23:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:23:36,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:23:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:23:36,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:23:36,326 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:23:36,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568395441]
[2022-02-24 01:23:36,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [568395441] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:23:36,326 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:23:36,327 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [136] imperfect sequences [] total 136
[2022-02-24 01:23:36,327 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286212658]
[2022-02-24 01:23:36,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:23:36,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 136 states
[2022-02-24 01:23:36,327 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:23:36,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants.
[2022-02-24 01:23:36,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9047, Invalid=9313, Unknown=0, NotChecked=0, Total=18360
[2022-02-24 01:23:36,330 INFO L87 Difference]: Start difference. First operand 277 states and 277 transitions. Second operand has 136 states, 136 states have (on average 2.0) internal successors, (272), 135 states have internal predecessors, (272), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:23:43,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:23:43,051 INFO L93 Difference]: Finished difference Result 286 states and 286 transitions.
[2022-02-24 01:23:43,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states.
[2022-02-24 01:23:43,051 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 2.0) internal successors, (272), 135 states have internal predecessors, (272), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 276
[2022-02-24 01:23:43,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:23:43,052 INFO L225 Difference]: With dead ends: 286
[2022-02-24 01:23:43,052 INFO L226 Difference]: Without dead ends: 280
[2022-02-24 01:23:43,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8910 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=27135, Invalid=44957, Unknown=0, NotChecked=0, Total=72092
[2022-02-24 01:23:43,055 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 274 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-24 01:23:43,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 49 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-24 01:23:43,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states.
[2022-02-24 01:23:43,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 279.
[2022-02-24 01:23:43,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 274 states have (on average 1.0036496350364963) internal successors, (275), 274 states have internal predecessors, (275), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:23:43,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions.
[2022-02-24 01:23:43,165 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 276
[2022-02-24 01:23:43,165 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:23:43,165 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions.
[2022-02-24 01:23:43,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 136 states have (on average 2.0) internal successors, (272), 135 states have internal predecessors, (272), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:23:43,166 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions.
[2022-02-24 01:23:43,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279
[2022-02-24 01:23:43,166 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:23:43,166 INFO L514 BasicCegarLoop]: trace histogram [133, 133, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:23:43,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133
[2022-02-24 01:23:43,167 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:23:43,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:23:43,167 INFO L85 PathProgramCache]: Analyzing trace with hash 573272932, now seen corresponding path program 133 times
[2022-02-24 01:23:43,167 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:23:43,167 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279806671]
[2022-02-24 01:23:43,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:23:43,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:23:43,179 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:23:43,179 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:23:43,179 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:23:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:23:48,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:23:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:23:48,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:23:48,848 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:23:48,849 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279806671]
[2022-02-24 01:23:48,849 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1279806671] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:23:48,849 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:23:48,849 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [137] imperfect sequences [] total 137
[2022-02-24 01:23:48,849 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674470865]
[2022-02-24 01:23:48,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:23:48,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 137 states
[2022-02-24 01:23:48,849 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:23:48,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants.
[2022-02-24 01:23:48,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9182, Invalid=9450, Unknown=0, NotChecked=0, Total=18632
[2022-02-24 01:23:48,852 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand has 137 states, 137 states have (on average 2.0) internal successors, (274), 136 states have internal predecessors, (274), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:23:55,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:23:55,810 INFO L93 Difference]: Finished difference Result 288 states and 288 transitions.
[2022-02-24 01:23:55,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states.
[2022-02-24 01:23:55,810 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 2.0) internal successors, (274), 136 states have internal predecessors, (274), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 278
[2022-02-24 01:23:55,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:23:55,811 INFO L225 Difference]: With dead ends: 288
[2022-02-24 01:23:55,811 INFO L226 Difference]: Without dead ends: 282
[2022-02-24 01:23:55,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9044 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=27540, Invalid=45630, Unknown=0, NotChecked=0, Total=73170
[2022-02-24 01:23:55,814 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 276 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-24 01:23:55,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 34 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-24 01:23:55,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states.
[2022-02-24 01:23:55,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 281.
[2022-02-24 01:23:55,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 276 states have (on average 1.0036231884057971) internal successors, (277), 276 states have internal predecessors, (277), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:23:55,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 281 transitions.
[2022-02-24 01:23:55,931 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 281 transitions. Word has length 278
[2022-02-24 01:23:55,931 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:23:55,931 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 281 transitions.
[2022-02-24 01:23:55,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 2.0) internal successors, (274), 136 states have internal predecessors, (274), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:23:55,932 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 281 transitions.
[2022-02-24 01:23:55,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281
[2022-02-24 01:23:55,932 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:23:55,932 INFO L514 BasicCegarLoop]: trace histogram [134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:23:55,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134
[2022-02-24 01:23:55,933 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:23:55,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:23:55,933 INFO L85 PathProgramCache]: Analyzing trace with hash 285386374, now seen corresponding path program 134 times
[2022-02-24 01:23:55,933 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:23:55,933 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989874664]
[2022-02-24 01:23:55,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:23:55,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:23:55,945 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:23:55,946 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:23:55,946 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:23:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:24:01,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:24:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:24:01,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:24:01,812 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:24:01,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989874664]
[2022-02-24 01:24:01,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [989874664] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:24:01,812 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:24:01,812 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [138] imperfect sequences [] total 138
[2022-02-24 01:24:01,813 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686391815]
[2022-02-24 01:24:01,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:24:01,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 138 states
[2022-02-24 01:24:01,813 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:24:01,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants.
[2022-02-24 01:24:01,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9318, Invalid=9588, Unknown=0, NotChecked=0, Total=18906
[2022-02-24 01:24:01,816 INFO L87 Difference]: Start difference. First operand 281 states and 281 transitions. Second operand has 138 states, 138 states have (on average 2.0) internal successors, (276), 137 states have internal predecessors, (276), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:24:09,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:24:09,006 INFO L93 Difference]: Finished difference Result 290 states and 290 transitions.
[2022-02-24 01:24:09,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states.
[2022-02-24 01:24:09,006 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 138 states have (on average 2.0) internal successors, (276), 137 states have internal predecessors, (276), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 280
[2022-02-24 01:24:09,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:24:09,007 INFO L225 Difference]: With dead ends: 290
[2022-02-24 01:24:09,007 INFO L226 Difference]: Without dead ends: 284
[2022-02-24 01:24:09,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9179 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=27948, Invalid=46308, Unknown=0, NotChecked=0, Total=74256
[2022-02-24 01:24:09,011 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 278 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-24 01:24:09,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 49 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-24 01:24:09,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states.
[2022-02-24 01:24:09,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 283.
[2022-02-24 01:24:09,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 278 states have (on average 1.0035971223021583) internal successors, (279), 278 states have internal predecessors, (279), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:24:09,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions.
[2022-02-24 01:24:09,142 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 280
[2022-02-24 01:24:09,142 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:24:09,142 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions.
[2022-02-24 01:24:09,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 138 states have (on average 2.0) internal successors, (276), 137 states have internal predecessors, (276), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:24:09,143 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions.
[2022-02-24 01:24:09,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283
[2022-02-24 01:24:09,143 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:24:09,143 INFO L514 BasicCegarLoop]: trace histogram [135, 135, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:24:09,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135
[2022-02-24 01:24:09,144 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:24:09,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:24:09,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1495688920, now seen corresponding path program 135 times
[2022-02-24 01:24:09,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:24:09,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518040255]
[2022-02-24 01:24:09,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:24:09,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:24:09,160 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:24:09,160 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:24:09,160 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:24:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:24:15,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:24:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:24:15,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:24:15,052 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:24:15,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518040255]
[2022-02-24 01:24:15,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [518040255] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:24:15,053 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:24:15,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [139] imperfect sequences [] total 139
[2022-02-24 01:24:15,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607381937]
[2022-02-24 01:24:15,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:24:15,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 139 states
[2022-02-24 01:24:15,053 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:24:15,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants.
[2022-02-24 01:24:15,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182
[2022-02-24 01:24:15,055 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand has 139 states, 139 states have (on average 2.0) internal successors, (278), 138 states have internal predecessors, (278), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:24:22,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:24:22,480 INFO L93 Difference]: Finished difference Result 292 states and 292 transitions.
[2022-02-24 01:24:22,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states.
[2022-02-24 01:24:22,481 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 2.0) internal successors, (278), 138 states have internal predecessors, (278), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 282
[2022-02-24 01:24:22,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:24:22,481 INFO L225 Difference]: With dead ends: 292
[2022-02-24 01:24:22,481 INFO L226 Difference]: Without dead ends: 286
[2022-02-24 01:24:22,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9315 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=28359, Invalid=46991, Unknown=0, NotChecked=0, Total=75350
[2022-02-24 01:24:22,485 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 280 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-24 01:24:22,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 49 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-24 01:24:22,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states.
[2022-02-24 01:24:22,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 285.
[2022-02-24 01:24:22,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 280 states have (on average 1.0035714285714286) internal successors, (281), 280 states have internal predecessors, (281), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:24:22,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 285 transitions.
[2022-02-24 01:24:22,616 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 285 transitions. Word has length 282
[2022-02-24 01:24:22,617 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:24:22,617 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 285 transitions.
[2022-02-24 01:24:22,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 2.0) internal successors, (278), 138 states have internal predecessors, (278), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:24:22,617 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 285 transitions.
[2022-02-24 01:24:22,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285
[2022-02-24 01:24:22,618 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:24:22,618 INFO L514 BasicCegarLoop]: trace histogram [136, 136, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:24:22,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136
[2022-02-24 01:24:22,618 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:24:22,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:24:22,618 INFO L85 PathProgramCache]: Analyzing trace with hash 582904650, now seen corresponding path program 136 times
[2022-02-24 01:24:22,618 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:24:22,618 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585937215]
[2022-02-24 01:24:22,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:24:22,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:24:22,630 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:24:22,630 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:24:22,630 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:24:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:24:28,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:24:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:24:28,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:24:28,505 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:24:28,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585937215]
[2022-02-24 01:24:28,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [585937215] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:24:28,505 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:24:28,505 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [140] imperfect sequences [] total 140
[2022-02-24 01:24:28,505 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322498046]
[2022-02-24 01:24:28,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:24:28,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 140 states
[2022-02-24 01:24:28,506 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:24:28,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants.
[2022-02-24 01:24:28,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9593, Invalid=9867, Unknown=0, NotChecked=0, Total=19460
[2022-02-24 01:24:28,511 INFO L87 Difference]: Start difference. First operand 285 states and 285 transitions. Second operand has 140 states, 140 states have (on average 2.0) internal successors, (280), 139 states have internal predecessors, (280), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:24:35,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:24:35,849 INFO L93 Difference]: Finished difference Result 294 states and 294 transitions.
[2022-02-24 01:24:35,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states.
[2022-02-24 01:24:35,849 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 2.0) internal successors, (280), 139 states have internal predecessors, (280), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 284
[2022-02-24 01:24:35,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:24:35,850 INFO L225 Difference]: With dead ends: 294
[2022-02-24 01:24:35,850 INFO L226 Difference]: Without dead ends: 288
[2022-02-24 01:24:35,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9452 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=28773, Invalid=47679, Unknown=0, NotChecked=0, Total=76452
[2022-02-24 01:24:35,854 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 282 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-24 01:24:35,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 34 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-24 01:24:35,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states.
[2022-02-24 01:24:36,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 287.
[2022-02-24 01:24:36,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 282 states have (on average 1.00354609929078) internal successors, (283), 282 states have internal predecessors, (283), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:24:36,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions.
[2022-02-24 01:24:36,003 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 284
[2022-02-24 01:24:36,003 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:24:36,003 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions.
[2022-02-24 01:24:36,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 2.0) internal successors, (280), 139 states have internal predecessors, (280), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:24:36,004 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions.
[2022-02-24 01:24:36,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287
[2022-02-24 01:24:36,005 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:24:36,005 INFO L514 BasicCegarLoop]: trace histogram [137, 137, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:24:36,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137
[2022-02-24 01:24:36,005 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:24:36,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:24:36,005 INFO L85 PathProgramCache]: Analyzing trace with hash 951532780, now seen corresponding path program 137 times
[2022-02-24 01:24:36,005 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:24:36,005 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078552295]
[2022-02-24 01:24:36,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:24:36,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:24:36,022 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:24:36,022 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:24:36,022 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:24:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:24:41,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:24:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:24:41,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:24:41,995 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:24:41,995 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078552295]
[2022-02-24 01:24:41,995 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2078552295] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:24:41,996 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:24:41,996 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [141] imperfect sequences [] total 141
[2022-02-24 01:24:41,996 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864699500]
[2022-02-24 01:24:41,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:24:41,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 141 states
[2022-02-24 01:24:41,996 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:24:41,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants.
[2022-02-24 01:24:42,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9732, Invalid=10008, Unknown=0, NotChecked=0, Total=19740
[2022-02-24 01:24:42,000 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand has 141 states, 141 states have (on average 2.0) internal successors, (282), 140 states have internal predecessors, (282), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:24:49,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:24:49,676 INFO L93 Difference]: Finished difference Result 296 states and 296 transitions.
[2022-02-24 01:24:49,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states.
[2022-02-24 01:24:49,677 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 141 states have (on average 2.0) internal successors, (282), 140 states have internal predecessors, (282), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 286
[2022-02-24 01:24:49,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:24:49,678 INFO L225 Difference]: With dead ends: 296
[2022-02-24 01:24:49,678 INFO L226 Difference]: Without dead ends: 290
[2022-02-24 01:24:49,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9590 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=29190, Invalid=48372, Unknown=0, NotChecked=0, Total=77562
[2022-02-24 01:24:49,682 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 284 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-24 01:24:49,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 34 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-24 01:24:49,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states.
[2022-02-24 01:24:49,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 289.
[2022-02-24 01:24:49,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 284 states have (on average 1.0035211267605635) internal successors, (285), 284 states have internal predecessors, (285), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:24:49,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 289 transitions.
[2022-02-24 01:24:49,845 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 289 transitions. Word has length 286
[2022-02-24 01:24:49,846 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:24:49,846 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 289 transitions.
[2022-02-24 01:24:49,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 141 states have (on average 2.0) internal successors, (282), 140 states have internal predecessors, (282), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:24:49,846 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 289 transitions.
[2022-02-24 01:24:49,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289
[2022-02-24 01:24:49,847 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:24:49,847 INFO L514 BasicCegarLoop]: trace histogram [138, 138, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:24:49,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138
[2022-02-24 01:24:49,847 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:24:49,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:24:49,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1279119858, now seen corresponding path program 138 times
[2022-02-24 01:24:49,847 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:24:49,847 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653071135]
[2022-02-24 01:24:49,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:24:49,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:24:49,860 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:24:49,860 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:24:49,860 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:24:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:24:55,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:24:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:24:55,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:24:55,914 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:24:55,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653071135]
[2022-02-24 01:24:55,914 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1653071135] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:24:55,914 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:24:55,914 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [142] imperfect sequences [] total 142
[2022-02-24 01:24:55,914 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931252715]
[2022-02-24 01:24:55,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:24:55,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 142 states
[2022-02-24 01:24:55,914 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:24:55,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants.
[2022-02-24 01:24:55,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9872, Invalid=10150, Unknown=0, NotChecked=0, Total=20022
[2022-02-24 01:24:55,918 INFO L87 Difference]: Start difference. First operand 289 states and 289 transitions. Second operand has 142 states, 142 states have (on average 2.0) internal successors, (284), 141 states have internal predecessors, (284), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:25:03,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:25:03,379 INFO L93 Difference]: Finished difference Result 298 states and 298 transitions.
[2022-02-24 01:25:03,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states.
[2022-02-24 01:25:03,380 INFO L78 Accepts]: Start accepts. Automaton has has 142 states, 142 states have (on average 2.0) internal successors, (284), 141 states have internal predecessors, (284), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 288
[2022-02-24 01:25:03,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:25:03,381 INFO L225 Difference]: With dead ends: 298
[2022-02-24 01:25:03,381 INFO L226 Difference]: Without dead ends: 292
[2022-02-24 01:25:03,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9729 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=29610, Invalid=49070, Unknown=0, NotChecked=0, Total=78680
[2022-02-24 01:25:03,385 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 286 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-24 01:25:03,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 69 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-24 01:25:03,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states.
[2022-02-24 01:25:03,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 291.
[2022-02-24 01:25:03,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 286 states have (on average 1.0034965034965035) internal successors, (287), 286 states have internal predecessors, (287), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:25:03,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions.
[2022-02-24 01:25:03,575 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 288
[2022-02-24 01:25:03,575 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:25:03,575 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions.
[2022-02-24 01:25:03,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 142 states, 142 states have (on average 2.0) internal successors, (284), 141 states have internal predecessors, (284), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:25:03,575 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions.
[2022-02-24 01:25:03,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291
[2022-02-24 01:25:03,576 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:25:03,576 INFO L514 BasicCegarLoop]: trace histogram [139, 139, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:25:03,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139
[2022-02-24 01:25:03,577 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:25:03,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:25:03,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1747624272, now seen corresponding path program 139 times
[2022-02-24 01:25:03,577 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:25:03,577 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29587424]
[2022-02-24 01:25:03,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:25:03,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:25:03,593 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:25:03,593 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:25:03,593 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:25:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:25:09,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:25:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:25:09,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:25:09,750 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:25:09,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29587424]
[2022-02-24 01:25:09,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [29587424] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:25:09,750 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:25:09,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [143] imperfect sequences [] total 143
[2022-02-24 01:25:09,750 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538206007]
[2022-02-24 01:25:09,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:25:09,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 143 states
[2022-02-24 01:25:09,751 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:25:09,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants.
[2022-02-24 01:25:09,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10013, Invalid=10293, Unknown=0, NotChecked=0, Total=20306
[2022-02-24 01:25:09,753 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand has 143 states, 143 states have (on average 2.0) internal successors, (286), 142 states have internal predecessors, (286), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:25:17,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:25:17,316 INFO L93 Difference]: Finished difference Result 300 states and 300 transitions.
[2022-02-24 01:25:17,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states.
[2022-02-24 01:25:17,316 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 2.0) internal successors, (286), 142 states have internal predecessors, (286), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 290
[2022-02-24 01:25:17,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:25:17,317 INFO L225 Difference]: With dead ends: 300
[2022-02-24 01:25:17,317 INFO L226 Difference]: Without dead ends: 294
[2022-02-24 01:25:17,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9869 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=30033, Invalid=49773, Unknown=0, NotChecked=0, Total=79806
[2022-02-24 01:25:17,321 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 288 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-24 01:25:17,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 39 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-24 01:25:17,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states.
[2022-02-24 01:25:17,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 293.
[2022-02-24 01:25:17,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 288 states have (on average 1.0034722222222223) internal successors, (289), 288 states have internal predecessors, (289), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:25:17,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions.
[2022-02-24 01:25:17,460 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 290
[2022-02-24 01:25:17,460 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:25:17,460 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions.
[2022-02-24 01:25:17,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 2.0) internal successors, (286), 142 states have internal predecessors, (286), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:25:17,460 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions.
[2022-02-24 01:25:17,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293
[2022-02-24 01:25:17,461 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:25:17,461 INFO L514 BasicCegarLoop]: trace histogram [140, 140, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:25:17,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140
[2022-02-24 01:25:17,461 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:25:17,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:25:17,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1008800046, now seen corresponding path program 140 times
[2022-02-24 01:25:17,462 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:25:17,462 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661917920]
[2022-02-24 01:25:17,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:25:17,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:25:17,474 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:25:17,475 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:25:17,475 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:25:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:25:23,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:25:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:25:23,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:25:23,606 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:25:23,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661917920]
[2022-02-24 01:25:23,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [661917920] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:25:23,606 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:25:23,606 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [144] imperfect sequences [] total 144
[2022-02-24 01:25:23,606 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722412616]
[2022-02-24 01:25:23,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:25:23,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 144 states
[2022-02-24 01:25:23,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:25:23,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants.
[2022-02-24 01:25:23,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10155, Invalid=10437, Unknown=0, NotChecked=0, Total=20592
[2022-02-24 01:25:23,609 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand has 144 states, 144 states have (on average 2.0) internal successors, (288), 143 states have internal predecessors, (288), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:25:31,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 01:25:31,340 INFO L93 Difference]: Finished difference Result 302 states and 302 transitions.
[2022-02-24 01:25:31,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states.
[2022-02-24 01:25:31,340 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 144 states have (on average 2.0) internal successors, (288), 143 states have internal predecessors, (288), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 292
[2022-02-24 01:25:31,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 01:25:31,341 INFO L225 Difference]: With dead ends: 302
[2022-02-24 01:25:31,341 INFO L226 Difference]: Without dead ends: 296
[2022-02-24 01:25:31,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10010 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=30459, Invalid=50481, Unknown=0, NotChecked=0, Total=80940
[2022-02-24 01:25:31,344 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 290 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-24 01:25:31,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 34 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-24 01:25:31,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states.
[2022-02-24 01:25:31,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 295.
[2022-02-24 01:25:31,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 290 states have (on average 1.0034482758620689) internal successors, (291), 290 states have internal predecessors, (291), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:25:31,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions.
[2022-02-24 01:25:31,473 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 292
[2022-02-24 01:25:31,473 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 01:25:31,473 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions.
[2022-02-24 01:25:31,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 144 states have (on average 2.0) internal successors, (288), 143 states have internal predecessors, (288), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-24 01:25:31,473 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions.
[2022-02-24 01:25:31,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295
[2022-02-24 01:25:31,474 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 01:25:31,474 INFO L514 BasicCegarLoop]: trace histogram [141, 141, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 01:25:31,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141
[2022-02-24 01:25:31,474 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 01:25:31,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 01:25:31,475 INFO L85 PathProgramCache]: Analyzing trace with hash 331677300, now seen corresponding path program 141 times
[2022-02-24 01:25:31,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 01:25:31,475 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772183685]
[2022-02-24 01:25:31,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 01:25:31,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 01:25:31,489 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-02-24 01:25:31,490 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-02-24 01:25:31,490 INFO L281 tedInterpolationCore]: Could not accelerate.
[2022-02-24 01:25:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:25:37,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 01:25:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 01:25:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 01:25:37,834 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 01:25:37,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772183685]
[2022-02-24 01:25:37,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1772183685] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 01:25:37,835 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 01:25:37,835 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [145] imperfect sequences [] total 145
[2022-02-24 01:25:37,835 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568364404]
[2022-02-24 01:25:37,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 01:25:37,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 145 states
[2022-02-24 01:25:37,835 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 01:25:37,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants.
[2022-02-24 01:25:37,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10298, Invalid=10582, Unknown=0, NotChecked=0, Total=20880
[2022-02-24 01:25:37,838 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand has 145 states, 145 states have (on average 2.0) internal successors, (290), 144 states have internal predecessors, (290), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)