/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/array-examples/standard_copy8_ground-2.i
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-d966a43
[2022-01-31 17:23:36,561 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-01-31 17:23:36,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-31 17:23:36,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-31 17:23:36,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-31 17:23:36,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-31 17:23:36,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-31 17:23:36,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-31 17:23:36,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-31 17:23:36,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-31 17:23:36,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-01-31 17:23:36,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-31 17:23:36,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-31 17:23:36,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-31 17:23:36,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-31 17:23:36,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-31 17:23:36,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-31 17:23:36,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-31 17:23:36,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-31 17:23:36,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-31 17:23:36,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-31 17:23:36,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-31 17:23:36,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-01-31 17:23:36,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-31 17:23:36,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-31 17:23:36,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-31 17:23:36,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-31 17:23:36,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
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[2022-01-31 17:23:36,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
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[2022-01-31 17:23:36,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-31 17:23:36,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
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[2022-01-31 17:23:36,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-31 17:23:36,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-01-31 17:23:36,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf
[2022-01-31 17:23:36,665 INFO L113 SettingsManager]: Loading preferences was successful
[2022-01-31 17:23:36,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-31 17:23:36,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-31 17:23:36,666 INFO L138 SettingsManager]: * sizeof long=4
[2022-01-31 17:23:36,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-01-31 17:23:36,667 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-01-31 17:23:36,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-01-31 17:23:36,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-01-31 17:23:36,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-31 17:23:36,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-01-31 17:23:36,668 INFO L138 SettingsManager]: * sizeof long double=12
[2022-01-31 17:23:36,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-01-31 17:23:36,668 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-01-31 17:23:36,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-01-31 17:23:36,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-31 17:23:36,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-01-31 17:23:36,669 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-01-31 17:23:36,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-01-31 17:23:36,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-31 17:23:36,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-31 17:23:36,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2022-01-31 17:23:36,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-31 17:23:36,670 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN
[2022-01-31 17:23:36,670 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-31 17:23:36,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-31 17:23:36,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-31 17:23:36,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-31 17:23:36,890 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-01-31 17:23:36,891 INFO L275 PluginConnector]: CDTParser initialized
[2022-01-31 17:23:36,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy8_ground-2.i
[2022-01-31 17:23:36,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab8a878bc/5e3ee3e052de4e4292aacaaf0344ee70/FLAG97a5ee682
[2022-01-31 17:23:37,307 INFO L306 CDTParser]: Found 1 translation units.
[2022-01-31 17:23:37,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy8_ground-2.i
[2022-01-31 17:23:37,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab8a878bc/5e3ee3e052de4e4292aacaaf0344ee70/FLAG97a5ee682
[2022-01-31 17:23:37,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab8a878bc/5e3ee3e052de4e4292aacaaf0344ee70
[2022-01-31 17:23:37,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-31 17:23:37,703 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2022-01-31 17:23:37,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-31 17:23:37,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-31 17:23:37,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-31 17:23:37,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:23:37" (1/1) ...
[2022-01-31 17:23:37,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e00adc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:37, skipping insertion in model container
[2022-01-31 17:23:37,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:23:37" (1/1) ...
[2022-01-31 17:23:37,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-01-31 17:23:37,728 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-01-31 17:23:37,836 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy8_ground-2.i[816,829]
[2022-01-31 17:23:37,852 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-01-31 17:23:37,857 INFO L203 MainTranslator]: Completed pre-run
[2022-01-31 17:23:37,877 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy8_ground-2.i[816,829]
[2022-01-31 17:23:37,888 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-01-31 17:23:37,925 INFO L208 MainTranslator]: Completed translation
[2022-01-31 17:23:37,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:37 WrapperNode
[2022-01-31 17:23:37,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-31 17:23:37,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-31 17:23:37,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-31 17:23:37,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-01-31 17:23:37,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:37" (1/1) ...
[2022-01-31 17:23:37,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:37" (1/1) ...
[2022-01-31 17:23:37,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:37" (1/1) ...
[2022-01-31 17:23:37,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:37" (1/1) ...
[2022-01-31 17:23:37,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:37" (1/1) ...
[2022-01-31 17:23:37,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:37" (1/1) ...
[2022-01-31 17:23:37,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:37" (1/1) ...
[2022-01-31 17:23:37,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-31 17:23:37,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-31 17:23:37,963 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-01-31 17:23:37,963 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-01-31 17:23:37,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:37" (1/1) ...
[2022-01-31 17:23:37,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-31 17:23:37,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-31 17:23:37,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-01-31 17:23:38,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-01-31 17:23:38,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-01-31 17:23:38,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-31 17:23:38,035 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-01-31 17:23:38,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-01-31 17:23:38,035 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-01-31 17:23:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-01-31 17:23:38,036 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-01-31 17:23:38,036 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2022-01-31 17:23:38,036 INFO L130 BoogieDeclarations]: Found specification of procedure __assert
[2022-01-31 17:23:38,036 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-01-31 17:23:38,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-31 17:23:38,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-01-31 17:23:38,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2022-01-31 17:23:38,036 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-01-31 17:23:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-01-31 17:23:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-01-31 17:23:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-01-31 17:23:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-31 17:23:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-01-31 17:23:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-01-31 17:23:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-31 17:23:38,100 INFO L234 CfgBuilder]: Building ICFG
[2022-01-31 17:23:38,101 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-31 17:23:38,317 INFO L275 CfgBuilder]: Performing block encoding
[2022-01-31 17:23:38,322 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-31 17:23:38,322 INFO L299 CfgBuilder]: Removed 10 assume(true) statements.
[2022-01-31 17:23:38,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:23:38 BoogieIcfgContainer
[2022-01-31 17:23:38,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-31 17:23:38,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-31 17:23:38,325 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-01-31 17:23:38,328 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-01-31 17:23:38,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:23:37" (1/3) ...
[2022-01-31 17:23:38,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7489991b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:23:38, skipping insertion in model container
[2022-01-31 17:23:38,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:23:37" (2/3) ...
[2022-01-31 17:23:38,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7489991b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:23:38, skipping insertion in model container
[2022-01-31 17:23:38,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:23:38" (3/3) ...
[2022-01-31 17:23:38,330 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_copy8_ground-2.i
[2022-01-31 17:23:38,333 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2022-01-31 17:23:38,334 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-31 17:23:38,374 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-31 17:23:38,381 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
[2022-01-31 17:23:38,389 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-31 17:23:38,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 40 states have (on average 1.55) internal successors, (62), 41 states have internal predecessors, (62), 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)
[2022-01-31 17:23:38,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2022-01-31 17:23:38,408 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:38,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:38,409 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:38,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:38,415 INFO L85 PathProgramCache]: Analyzing trace with hash -526764681, now seen corresponding path program 1 times
[2022-01-31 17:23:38,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:38,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100830840]
[2022-01-31 17:23:38,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:38,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:38,466 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:38,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:38,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:38,618 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:38,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100830840]
[2022-01-31 17:23:38,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [100830840] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:38,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:38,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-31 17:23:38,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291897495]
[2022-01-31 17:23:38,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:38,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-31 17:23:38,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:38,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-31 17:23:38,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-31 17:23:38,660 INFO L87 Difference]: Start difference. First operand has 48 states, 40 states have (on average 1.55) internal successors, (62), 41 states have internal predecessors, (62), 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 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:38,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:38,721 INFO L93 Difference]: Finished difference Result 88 states and 127 transitions.
[2022-01-31 17:23:38,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-01-31 17:23:38,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (3), 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 29
[2022-01-31 17:23:38,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:38,729 INFO L225 Difference]: With dead ends: 88
[2022-01-31 17:23:38,729 INFO L226 Difference]: Without dead ends: 43
[2022-01-31 17:23:38,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-31 17:23:38,734 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 48 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 59 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
[2022-01-31 17:23:38,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 59 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:23:38,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2022-01-31 17:23:38,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43.
[2022-01-31 17:23:38,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 37 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:38,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions.
[2022-01-31 17:23:38,764 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29
[2022-01-31 17:23:38,765 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:38,765 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions.
[2022-01-31 17:23:38,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:38,765 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions.
[2022-01-31 17:23:38,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2022-01-31 17:23:38,766 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:38,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:38,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-31 17:23:38,767 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:38,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:38,767 INFO L85 PathProgramCache]: Analyzing trace with hash 551214943, now seen corresponding path program 1 times
[2022-01-31 17:23:38,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:38,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343988882]
[2022-01-31 17:23:38,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:38,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:38,771 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:38,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:38,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:38,852 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:38,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343988882]
[2022-01-31 17:23:38,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1343988882] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:38,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:38,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 17:23:38,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531823269]
[2022-01-31 17:23:38,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:38,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 17:23:38,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:38,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 17:23:38,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 17:23:38,855 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:38,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:38,936 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions.
[2022-01-31 17:23:38,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 17:23:38,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 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 29
[2022-01-31 17:23:38,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:38,938 INFO L225 Difference]: With dead ends: 80
[2022-01-31 17:23:38,938 INFO L226 Difference]: Without dead ends: 45
[2022-01-31 17:23:38,938 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
[2022-01-31 17:23:38,940 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 47 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:38,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 56 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:38,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2022-01-31 17:23:38,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44.
[2022-01-31 17:23:38,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 38 states have (on average 1.263157894736842) internal successors, (48), 38 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:38,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions.
[2022-01-31 17:23:38,949 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 29
[2022-01-31 17:23:38,949 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:38,949 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions.
[2022-01-31 17:23:38,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:38,949 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions.
[2022-01-31 17:23:38,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2022-01-31 17:23:38,950 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:38,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:38,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-31 17:23:38,951 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:38,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:38,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1532902013, now seen corresponding path program 1 times
[2022-01-31 17:23:38,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:38,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213884641]
[2022-01-31 17:23:38,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:38,966 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:38,966 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:38,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:38,968 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:39,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:39,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:39,040 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:39,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213884641]
[2022-01-31 17:23:39,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [213884641] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:39,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:39,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-01-31 17:23:39,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078787095]
[2022-01-31 17:23:39,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:39,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-31 17:23:39,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:39,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-31 17:23:39,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-01-31 17:23:39,043 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:39,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:39,129 INFO L93 Difference]: Finished difference Result 82 states and 100 transitions.
[2022-01-31 17:23:39,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-01-31 17:23:39,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 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 31
[2022-01-31 17:23:39,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:39,132 INFO L225 Difference]: With dead ends: 82
[2022-01-31 17:23:39,132 INFO L226 Difference]: Without dead ends: 47
[2022-01-31 17:23:39,134 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
[2022-01-31 17:23:39,139 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 49 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:39,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 56 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:39,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2022-01-31 17:23:39,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46.
[2022-01-31 17:23:39,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 40 states have (on average 1.25) internal successors, (50), 40 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions.
[2022-01-31 17:23:39,160 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 31
[2022-01-31 17:23:39,160 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:39,160 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions.
[2022-01-31 17:23:39,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:39,161 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions.
[2022-01-31 17:23:39,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2022-01-31 17:23:39,163 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:39,163 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:39,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-01-31 17:23:39,164 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:39,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:39,164 INFO L85 PathProgramCache]: Analyzing trace with hash 41371163, now seen corresponding path program 2 times
[2022-01-31 17:23:39,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:39,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398060743]
[2022-01-31 17:23:39,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:39,174 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:39,174 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:39,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:39,176 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:39,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:39,247 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:39,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398060743]
[2022-01-31 17:23:39,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1398060743] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:39,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:39,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 17:23:39,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238923143]
[2022-01-31 17:23:39,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:39,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 17:23:39,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:39,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 17:23:39,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 17:23:39,249 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:39,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:39,343 INFO L93 Difference]: Finished difference Result 94 states and 118 transitions.
[2022-01-31 17:23:39,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 17:23:39,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 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 33
[2022-01-31 17:23:39,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:39,345 INFO L225 Difference]: With dead ends: 94
[2022-01-31 17:23:39,345 INFO L226 Difference]: Without dead ends: 62
[2022-01-31 17:23:39,346 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
[2022-01-31 17:23:39,350 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 61 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 42 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
[2022-01-31 17:23:39,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 42 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:39,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states.
[2022-01-31 17:23:39,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54.
[2022-01-31 17:23:39,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 48 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:39,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions.
[2022-01-31 17:23:39,358 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 33
[2022-01-31 17:23:39,358 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:39,358 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions.
[2022-01-31 17:23:39,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:39,359 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions.
[2022-01-31 17:23:39,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2022-01-31 17:23:39,360 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:39,360 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:39,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-01-31 17:23:39,360 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:39,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:39,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1111004149, now seen corresponding path program 1 times
[2022-01-31 17:23:39,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:39,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654094456]
[2022-01-31 17:23:39,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:39,365 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:39,365 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:39,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:39,366 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:39,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:39,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:39,492 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:39,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654094456]
[2022-01-31 17:23:39,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [654094456] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:39,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:39,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-01-31 17:23:39,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061792717]
[2022-01-31 17:23:39,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:39,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-31 17:23:39,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:39,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-31 17:23:39,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-01-31 17:23:39,496 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:39,648 INFO L93 Difference]: Finished difference Result 117 states and 141 transitions.
[2022-01-31 17:23:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-01-31 17:23:39,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (3), 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 49
[2022-01-31 17:23:39,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:39,654 INFO L225 Difference]: With dead ends: 117
[2022-01-31 17:23:39,654 INFO L226 Difference]: Without dead ends: 78
[2022-01-31 17:23:39,659 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
[2022-01-31 17:23:39,661 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 77 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:39,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 47 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:39,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2022-01-31 17:23:39,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 70.
[2022-01-31 17:23:39,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 64 states have (on average 1.15625) internal successors, (74), 64 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:39,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions.
[2022-01-31 17:23:39,672 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 49
[2022-01-31 17:23:39,672 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:39,672 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions.
[2022-01-31 17:23:39,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:39,673 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions.
[2022-01-31 17:23:39,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2022-01-31 17:23:39,674 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:39,674 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:39,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-01-31 17:23:39,674 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:39,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:39,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1003720197, now seen corresponding path program 2 times
[2022-01-31 17:23:39,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:39,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488779524]
[2022-01-31 17:23:39,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:39,682 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:39,682 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:39,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:39,685 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:39,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:39,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:39,859 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:39,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488779524]
[2022-01-31 17:23:39,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [488779524] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:39,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:39,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-01-31 17:23:39,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550890372]
[2022-01-31 17:23:39,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:39,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-31 17:23:39,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:39,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-31 17:23:39,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2022-01-31 17:23:39,861 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:39,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:39,947 INFO L93 Difference]: Finished difference Result 132 states and 150 transitions.
[2022-01-31 17:23:39,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-01-31 17:23:39,947 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (3), 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 65
[2022-01-31 17:23:39,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:39,948 INFO L225 Difference]: With dead ends: 132
[2022-01-31 17:23:39,948 INFO L226 Difference]: Without dead ends: 73
[2022-01-31 17:23:39,949 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
[2022-01-31 17:23:39,951 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 51 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:39,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 56 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:39,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states.
[2022-01-31 17:23:39,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72.
[2022-01-31 17:23:39,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 66 states have (on average 1.1515151515151516) internal successors, (76), 66 states have internal predecessors, (76), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:39,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions.
[2022-01-31 17:23:39,965 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 65
[2022-01-31 17:23:39,966 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:39,966 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions.
[2022-01-31 17:23:39,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:39,966 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions.
[2022-01-31 17:23:39,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-01-31 17:23:39,969 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:39,970 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:39,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-01-31 17:23:39,970 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:39,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:39,971 INFO L85 PathProgramCache]: Analyzing trace with hash 789124633, now seen corresponding path program 3 times
[2022-01-31 17:23:39,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:39,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937683819]
[2022-01-31 17:23:39,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:39,976 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:39,976 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:39,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:39,978 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:40,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:40,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:40,066 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:40,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937683819]
[2022-01-31 17:23:40,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [937683819] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:40,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:40,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-01-31 17:23:40,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338512147]
[2022-01-31 17:23:40,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:40,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-01-31 17:23:40,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:40,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-01-31 17:23:40,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-01-31 17:23:40,068 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:40,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:40,178 INFO L93 Difference]: Finished difference Result 134 states and 152 transitions.
[2022-01-31 17:23:40,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-01-31 17:23:40,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (3), 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 67
[2022-01-31 17:23:40,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:40,179 INFO L225 Difference]: With dead ends: 134
[2022-01-31 17:23:40,179 INFO L226 Difference]: Without dead ends: 75
[2022-01-31 17:23:40,180 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
[2022-01-31 17:23:40,180 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 53 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:40,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 56 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:40,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states.
[2022-01-31 17:23:40,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74.
[2022-01-31 17:23:40,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 68 states have (on average 1.1470588235294117) internal successors, (78), 68 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions.
[2022-01-31 17:23:40,188 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 67
[2022-01-31 17:23:40,189 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:40,189 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions.
[2022-01-31 17:23:40,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:40,189 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions.
[2022-01-31 17:23:40,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2022-01-31 17:23:40,190 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:40,190 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:40,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-01-31 17:23:40,190 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:40,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:40,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1431120567, now seen corresponding path program 4 times
[2022-01-31 17:23:40,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:40,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617269284]
[2022-01-31 17:23:40,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:40,193 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:40,193 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:40,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:40,195 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:40,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:40,282 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:40,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617269284]
[2022-01-31 17:23:40,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [617269284] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:40,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:40,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2022-01-31 17:23:40,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557089294]
[2022-01-31 17:23:40,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:40,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-01-31 17:23:40,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:40,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-01-31 17:23:40,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2022-01-31 17:23:40,284 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:40,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:40,460 INFO L93 Difference]: Finished difference Result 136 states and 154 transitions.
[2022-01-31 17:23:40,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2022-01-31 17:23:40,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (3), 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 69
[2022-01-31 17:23:40,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:40,461 INFO L225 Difference]: With dead ends: 136
[2022-01-31 17:23:40,462 INFO L226 Difference]: Without dead ends: 77
[2022-01-31 17:23:40,462 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
[2022-01-31 17:23:40,463 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 55 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:40,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 71 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:40,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states.
[2022-01-31 17:23:40,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76.
[2022-01-31 17:23:40,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 70 states have internal predecessors, (80), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:40,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions.
[2022-01-31 17:23:40,472 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 69
[2022-01-31 17:23:40,472 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:40,472 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions.
[2022-01-31 17:23:40,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:40,473 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions.
[2022-01-31 17:23:40,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72
[2022-01-31 17:23:40,474 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:40,474 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:40,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-01-31 17:23:40,474 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:40,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:40,474 INFO L85 PathProgramCache]: Analyzing trace with hash -86077483, now seen corresponding path program 5 times
[2022-01-31 17:23:40,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:40,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988346963]
[2022-01-31 17:23:40,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:40,477 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:40,477 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:40,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:40,479 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:40,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:40,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:40,581 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:40,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988346963]
[2022-01-31 17:23:40,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [988346963] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:40,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:40,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2022-01-31 17:23:40,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651972079]
[2022-01-31 17:23:40,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:40,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-01-31 17:23:40,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:40,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-01-31 17:23:40,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72
[2022-01-31 17:23:40,583 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:40,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:40,735 INFO L93 Difference]: Finished difference Result 138 states and 156 transitions.
[2022-01-31 17:23:40,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2022-01-31 17:23:40,735 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (3), 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 71
[2022-01-31 17:23:40,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:40,736 INFO L225 Difference]: With dead ends: 138
[2022-01-31 17:23:40,736 INFO L226 Difference]: Without dead ends: 79
[2022-01-31 17:23:40,737 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
[2022-01-31 17:23:40,739 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 57 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:40,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 71 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:40,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states.
[2022-01-31 17:23:40,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78.
[2022-01-31 17:23:40,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 72 states have (on average 1.1388888888888888) internal successors, (82), 72 states have internal predecessors, (82), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:40,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions.
[2022-01-31 17:23:40,756 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 71
[2022-01-31 17:23:40,756 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:40,756 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions.
[2022-01-31 17:23:40,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:40,757 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions.
[2022-01-31 17:23:40,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74
[2022-01-31 17:23:40,760 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:40,760 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:40,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-01-31 17:23:40,761 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:40,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:40,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2119490189, now seen corresponding path program 6 times
[2022-01-31 17:23:40,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:40,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765781309]
[2022-01-31 17:23:40,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:40,764 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:40,764 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:40,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:40,766 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:40,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:40,877 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:40,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765781309]
[2022-01-31 17:23:40,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [765781309] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:40,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:40,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2022-01-31 17:23:40,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323385876]
[2022-01-31 17:23:40,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:40,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-01-31 17:23:40,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:40,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-01-31 17:23:40,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90
[2022-01-31 17:23:40,879 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:41,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:41,058 INFO L93 Difference]: Finished difference Result 140 states and 158 transitions.
[2022-01-31 17:23:41,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2022-01-31 17:23:41,058 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (3), 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 73
[2022-01-31 17:23:41,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:41,059 INFO L225 Difference]: With dead ends: 140
[2022-01-31 17:23:41,059 INFO L226 Difference]: Without dead ends: 81
[2022-01-31 17:23:41,060 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
[2022-01-31 17:23:41,061 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 59 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:41,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 66 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:41,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states.
[2022-01-31 17:23:41,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80.
[2022-01-31 17:23:41,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 74 states have (on average 1.135135135135135) internal successors, (84), 74 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:41,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions.
[2022-01-31 17:23:41,071 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 73
[2022-01-31 17:23:41,071 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:41,071 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions.
[2022-01-31 17:23:41,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:41,071 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions.
[2022-01-31 17:23:41,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2022-01-31 17:23:41,076 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:41,076 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:41,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-01-31 17:23:41,076 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:41,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:41,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2018980975, now seen corresponding path program 7 times
[2022-01-31 17:23:41,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:41,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379355]
[2022-01-31 17:23:41,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:41,079 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:41,079 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:41,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:41,082 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:41,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:41,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:41,192 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:41,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379355]
[2022-01-31 17:23:41,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [379355] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:41,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:41,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2022-01-31 17:23:41,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020077825]
[2022-01-31 17:23:41,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:41,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-01-31 17:23:41,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:41,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-01-31 17:23:41,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110
[2022-01-31 17:23:41,194 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:41,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:41,369 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions.
[2022-01-31 17:23:41,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2022-01-31 17:23:41,370 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 2 states have call successors, (3), 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 75
[2022-01-31 17:23:41,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:41,371 INFO L225 Difference]: With dead ends: 142
[2022-01-31 17:23:41,371 INFO L226 Difference]: Without dead ends: 83
[2022-01-31 17:23:41,371 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
[2022-01-31 17:23:41,372 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 61 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:41,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 66 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:41,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states.
[2022-01-31 17:23:41,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82.
[2022-01-31 17:23:41,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 76 states have (on average 1.131578947368421) internal successors, (86), 76 states have internal predecessors, (86), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:41,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions.
[2022-01-31 17:23:41,378 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 75
[2022-01-31 17:23:41,379 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:41,379 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions.
[2022-01-31 17:23:41,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:41,379 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions.
[2022-01-31 17:23:41,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2022-01-31 17:23:41,379 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:41,380 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:41,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2022-01-31 17:23:41,380 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:41,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:41,380 INFO L85 PathProgramCache]: Analyzing trace with hash 81093167, now seen corresponding path program 8 times
[2022-01-31 17:23:41,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:41,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449220833]
[2022-01-31 17:23:41,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:41,383 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:41,383 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:41,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:41,385 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:41,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:41,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:41,503 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:41,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449220833]
[2022-01-31 17:23:41,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [449220833] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:41,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:41,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2022-01-31 17:23:41,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277589351]
[2022-01-31 17:23:41,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:41,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-01-31 17:23:41,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:41,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-01-31 17:23:41,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132
[2022-01-31 17:23:41,505 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:41,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:41,681 INFO L93 Difference]: Finished difference Result 144 states and 162 transitions.
[2022-01-31 17:23:41,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2022-01-31 17:23:41,681 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (3), 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 77
[2022-01-31 17:23:41,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:41,682 INFO L225 Difference]: With dead ends: 144
[2022-01-31 17:23:41,682 INFO L226 Difference]: Without dead ends: 85
[2022-01-31 17:23:41,682 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
[2022-01-31 17:23:41,683 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 63 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:41,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 61 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:41,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2022-01-31 17:23:41,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84.
[2022-01-31 17:23:41,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 78 states have (on average 1.1282051282051282) internal successors, (88), 78 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:41,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions.
[2022-01-31 17:23:41,689 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 77
[2022-01-31 17:23:41,690 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:41,690 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions.
[2022-01-31 17:23:41,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:41,690 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions.
[2022-01-31 17:23:41,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80
[2022-01-31 17:23:41,691 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:41,691 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:41,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2022-01-31 17:23:41,691 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:41,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:41,691 INFO L85 PathProgramCache]: Analyzing trace with hash -382285491, now seen corresponding path program 9 times
[2022-01-31 17:23:41,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:41,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705084761]
[2022-01-31 17:23:41,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:41,694 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:41,694 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:41,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:41,696 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:41,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:41,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:41,856 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:41,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705084761]
[2022-01-31 17:23:41,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1705084761] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:41,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:41,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2022-01-31 17:23:41,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400998389]
[2022-01-31 17:23:41,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:41,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2022-01-31 17:23:41,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:41,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2022-01-31 17:23:41,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156
[2022-01-31 17:23:41,858 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:42,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:42,056 INFO L93 Difference]: Finished difference Result 146 states and 164 transitions.
[2022-01-31 17:23:42,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2022-01-31 17:23:42,057 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (3), 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 79
[2022-01-31 17:23:42,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:42,057 INFO L225 Difference]: With dead ends: 146
[2022-01-31 17:23:42,057 INFO L226 Difference]: Without dead ends: 87
[2022-01-31 17:23:42,058 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
[2022-01-31 17:23:42,058 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 65 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:42,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 66 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:42,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states.
[2022-01-31 17:23:42,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86.
[2022-01-31 17:23:42,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 80 states have (on average 1.125) internal successors, (90), 80 states have internal predecessors, (90), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:42,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions.
[2022-01-31 17:23:42,083 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 79
[2022-01-31 17:23:42,083 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:42,083 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions.
[2022-01-31 17:23:42,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:42,084 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions.
[2022-01-31 17:23:42,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2022-01-31 17:23:42,084 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:42,084 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:42,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2022-01-31 17:23:42,085 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:42,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:42,085 INFO L85 PathProgramCache]: Analyzing trace with hash 987422955, now seen corresponding path program 10 times
[2022-01-31 17:23:42,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:42,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593454582]
[2022-01-31 17:23:42,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:42,089 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:42,089 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:42,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:42,092 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:42,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:42,246 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:42,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593454582]
[2022-01-31 17:23:42,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [593454582] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:42,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:42,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2022-01-31 17:23:42,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946845467]
[2022-01-31 17:23:42,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:42,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2022-01-31 17:23:42,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:42,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2022-01-31 17:23:42,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182
[2022-01-31 17:23:42,248 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 13 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:42,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:42,481 INFO L93 Difference]: Finished difference Result 148 states and 166 transitions.
[2022-01-31 17:23:42,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2022-01-31 17:23:42,481 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 13 states have internal predecessors, (61), 2 states have call successors, (3), 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 81
[2022-01-31 17:23:42,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:42,482 INFO L225 Difference]: With dead ends: 148
[2022-01-31 17:23:42,482 INFO L226 Difference]: Without dead ends: 89
[2022-01-31 17:23:42,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600
[2022-01-31 17:23:42,483 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 67 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:42,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 66 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:42,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states.
[2022-01-31 17:23:42,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88.
[2022-01-31 17:23:42,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 82 states have (on average 1.1219512195121952) internal successors, (92), 82 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:42,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions.
[2022-01-31 17:23:42,490 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 81
[2022-01-31 17:23:42,490 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:42,490 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions.
[2022-01-31 17:23:42,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 13 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:42,491 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions.
[2022-01-31 17:23:42,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84
[2022-01-31 17:23:42,491 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:42,491 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:42,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2022-01-31 17:23:42,492 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:42,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:42,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1277720311, now seen corresponding path program 11 times
[2022-01-31 17:23:42,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:42,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919139468]
[2022-01-31 17:23:42,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:42,495 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:42,495 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:42,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:42,497 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:42,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:42,661 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:42,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919139468]
[2022-01-31 17:23:42,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [919139468] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:42,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:42,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2022-01-31 17:23:42,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135489069]
[2022-01-31 17:23:42,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:42,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-01-31 17:23:42,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:42,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-01-31 17:23:42,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210
[2022-01-31 17:23:42,663 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 15 states, 15 states have (on average 4.2) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:42,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:42,917 INFO L93 Difference]: Finished difference Result 150 states and 168 transitions.
[2022-01-31 17:23:42,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2022-01-31 17:23:42,918 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (3), 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 83
[2022-01-31 17:23:42,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:42,919 INFO L225 Difference]: With dead ends: 150
[2022-01-31 17:23:42,919 INFO L226 Difference]: Without dead ends: 91
[2022-01-31 17:23:42,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702
[2022-01-31 17:23:42,920 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 69 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:42,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 71 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:42,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states.
[2022-01-31 17:23:42,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90.
[2022-01-31 17:23:42,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 84 states have (on average 1.119047619047619) internal successors, (94), 84 states have internal predecessors, (94), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:42,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions.
[2022-01-31 17:23:42,927 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 83
[2022-01-31 17:23:42,927 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:42,927 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions.
[2022-01-31 17:23:42,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:42,927 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions.
[2022-01-31 17:23:42,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86
[2022-01-31 17:23:42,928 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:42,928 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:42,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2022-01-31 17:23:42,928 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:42,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:42,929 INFO L85 PathProgramCache]: Analyzing trace with hash -531979865, now seen corresponding path program 12 times
[2022-01-31 17:23:42,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:42,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652425307]
[2022-01-31 17:23:42,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:42,931 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:42,931 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:42,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:42,934 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:43,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:43,098 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:43,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652425307]
[2022-01-31 17:23:43,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [652425307] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:43,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:43,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2022-01-31 17:23:43,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230260896]
[2022-01-31 17:23:43,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:43,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-01-31 17:23:43,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:43,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-01-31 17:23:43,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240
[2022-01-31 17:23:43,100 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 16 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:43,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:43,352 INFO L93 Difference]: Finished difference Result 152 states and 170 transitions.
[2022-01-31 17:23:43,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2022-01-31 17:23:43,352 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 2 states have call successors, (3), 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 85
[2022-01-31 17:23:43,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:43,353 INFO L225 Difference]: With dead ends: 152
[2022-01-31 17:23:43,353 INFO L226 Difference]: Without dead ends: 93
[2022-01-31 17:23:43,353 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
[2022-01-31 17:23:43,354 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 71 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:43,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 61 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:43,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2022-01-31 17:23:43,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92.
[2022-01-31 17:23:43,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 86 states have (on average 1.1162790697674418) internal successors, (96), 86 states have internal predecessors, (96), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:43,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions.
[2022-01-31 17:23:43,363 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 85
[2022-01-31 17:23:43,363 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:43,363 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions.
[2022-01-31 17:23:43,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:43,363 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions.
[2022-01-31 17:23:43,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88
[2022-01-31 17:23:43,364 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:43,364 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:43,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2022-01-31 17:23:43,365 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:43,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:43,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1134949691, now seen corresponding path program 13 times
[2022-01-31 17:23:43,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:43,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370071980]
[2022-01-31 17:23:43,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:43,368 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:43,368 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:43,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:43,371 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:43,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:43,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:43,545 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:43,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370071980]
[2022-01-31 17:23:43,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1370071980] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:43,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:43,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17
[2022-01-31 17:23:43,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493378824]
[2022-01-31 17:23:43,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:43,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2022-01-31 17:23:43,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:43,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2022-01-31 17:23:43,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272
[2022-01-31 17:23:43,547 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 16 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:43,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:43,798 INFO L93 Difference]: Finished difference Result 154 states and 172 transitions.
[2022-01-31 17:23:43,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2022-01-31 17:23:43,799 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 16 states have internal predecessors, (67), 2 states have call successors, (3), 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 87
[2022-01-31 17:23:43,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:43,799 INFO L225 Difference]: With dead ends: 154
[2022-01-31 17:23:43,799 INFO L226 Difference]: Without dead ends: 95
[2022-01-31 17:23:43,804 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
[2022-01-31 17:23:43,804 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 73 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:43,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 56 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:43,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states.
[2022-01-31 17:23:43,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94.
[2022-01-31 17:23:43,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 88 states have (on average 1.1136363636363635) internal successors, (98), 88 states have internal predecessors, (98), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:43,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions.
[2022-01-31 17:23:43,813 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 87
[2022-01-31 17:23:43,813 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:43,813 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions.
[2022-01-31 17:23:43,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 16 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:43,814 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions.
[2022-01-31 17:23:43,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90
[2022-01-31 17:23:43,814 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:43,815 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:43,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2022-01-31 17:23:43,815 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:43,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:43,816 INFO L85 PathProgramCache]: Analyzing trace with hash -768367517, now seen corresponding path program 14 times
[2022-01-31 17:23:43,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:43,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555906209]
[2022-01-31 17:23:43,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:43,819 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:43,819 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:43,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:43,821 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:44,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:44,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:44,024 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:44,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555906209]
[2022-01-31 17:23:44,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1555906209] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:44,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:44,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18
[2022-01-31 17:23:44,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814908138]
[2022-01-31 17:23:44,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:44,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2022-01-31 17:23:44,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:44,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2022-01-31 17:23:44,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306
[2022-01-31 17:23:44,026 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 17 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:44,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:44,317 INFO L93 Difference]: Finished difference Result 156 states and 174 transitions.
[2022-01-31 17:23:44,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2022-01-31 17:23:44,317 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 17 states have internal predecessors, (69), 2 states have call successors, (3), 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 89
[2022-01-31 17:23:44,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:44,318 INFO L225 Difference]: With dead ends: 156
[2022-01-31 17:23:44,318 INFO L226 Difference]: Without dead ends: 97
[2022-01-31 17:23:44,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056
[2022-01-31 17:23:44,320 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 75 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:44,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 61 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:44,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2022-01-31 17:23:44,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96.
[2022-01-31 17:23:44,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 90 states have (on average 1.1111111111111112) internal successors, (100), 90 states have internal predecessors, (100), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:44,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions.
[2022-01-31 17:23:44,328 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 89
[2022-01-31 17:23:44,328 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:44,328 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions.
[2022-01-31 17:23:44,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 17 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:44,328 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions.
[2022-01-31 17:23:44,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92
[2022-01-31 17:23:44,329 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:44,329 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:44,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2022-01-31 17:23:44,329 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:44,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:44,330 INFO L85 PathProgramCache]: Analyzing trace with hash -670216575, now seen corresponding path program 15 times
[2022-01-31 17:23:44,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:44,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458092182]
[2022-01-31 17:23:44,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:44,334 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:44,334 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:44,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:44,337 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:44,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:44,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:44,528 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:44,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458092182]
[2022-01-31 17:23:44,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [458092182] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:44,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:44,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19
[2022-01-31 17:23:44,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079683894]
[2022-01-31 17:23:44,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:44,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2022-01-31 17:23:44,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:44,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2022-01-31 17:23:44,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342
[2022-01-31 17:23:44,530 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 18 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:44,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:44,854 INFO L93 Difference]: Finished difference Result 158 states and 176 transitions.
[2022-01-31 17:23:44,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2022-01-31 17:23:44,854 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 18 states have internal predecessors, (71), 2 states have call successors, (3), 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 91
[2022-01-31 17:23:44,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:44,855 INFO L225 Difference]: With dead ends: 158
[2022-01-31 17:23:44,855 INFO L226 Difference]: Without dead ends: 99
[2022-01-31 17:23:44,856 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
[2022-01-31 17:23:44,856 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 77 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:44,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 71 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:44,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2022-01-31 17:23:44,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98.
[2022-01-31 17:23:44,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 92 states have (on average 1.108695652173913) internal successors, (102), 92 states have internal predecessors, (102), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:44,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions.
[2022-01-31 17:23:44,864 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 91
[2022-01-31 17:23:44,864 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:44,864 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions.
[2022-01-31 17:23:44,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 18 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:44,864 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions.
[2022-01-31 17:23:44,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94
[2022-01-31 17:23:44,865 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:44,865 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:44,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2022-01-31 17:23:44,865 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:44,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:44,866 INFO L85 PathProgramCache]: Analyzing trace with hash -836441825, now seen corresponding path program 16 times
[2022-01-31 17:23:44,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:44,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050058361]
[2022-01-31 17:23:44,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:44,868 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:44,868 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:44,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:44,871 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:45,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:45,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:45,080 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:45,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050058361]
[2022-01-31 17:23:45,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1050058361] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:45,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:45,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20
[2022-01-31 17:23:45,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250460305]
[2022-01-31 17:23:45,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:45,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2022-01-31 17:23:45,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:45,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2022-01-31 17:23:45,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380
[2022-01-31 17:23:45,081 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand has 20 states, 20 states have (on average 3.65) internal successors, (73), 19 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:45,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:45,418 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions.
[2022-01-31 17:23:45,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2022-01-31 17:23:45,419 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 19 states have internal predecessors, (73), 2 states have call successors, (3), 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 93
[2022-01-31 17:23:45,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:45,419 INFO L225 Difference]: With dead ends: 160
[2022-01-31 17:23:45,419 INFO L226 Difference]: Without dead ends: 101
[2022-01-31 17:23:45,420 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
[2022-01-31 17:23:45,421 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 79 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:45,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 71 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:45,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2022-01-31 17:23:45,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100.
[2022-01-31 17:23:45,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 94 states have (on average 1.1063829787234043) internal successors, (104), 94 states have internal predecessors, (104), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:45,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions.
[2022-01-31 17:23:45,428 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 93
[2022-01-31 17:23:45,428 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:45,428 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 109 transitions.
[2022-01-31 17:23:45,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 19 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:45,429 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 109 transitions.
[2022-01-31 17:23:45,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96
[2022-01-31 17:23:45,429 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:45,429 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:45,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2022-01-31 17:23:45,430 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:45,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:45,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1665117123, now seen corresponding path program 17 times
[2022-01-31 17:23:45,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:45,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482567107]
[2022-01-31 17:23:45,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:45,432 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:45,432 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:45,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:45,435 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:45,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:45,672 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:45,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482567107]
[2022-01-31 17:23:45,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1482567107] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:45,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:45,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21
[2022-01-31 17:23:45,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837862319]
[2022-01-31 17:23:45,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:45,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2022-01-31 17:23:45,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:45,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2022-01-31 17:23:45,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420
[2022-01-31 17:23:45,674 INFO L87 Difference]: Start difference. First operand 100 states and 109 transitions. Second operand has 21 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 20 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:46,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:46,042 INFO L93 Difference]: Finished difference Result 162 states and 180 transitions.
[2022-01-31 17:23:46,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2022-01-31 17:23:46,043 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 20 states have internal predecessors, (75), 2 states have call successors, (3), 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 95
[2022-01-31 17:23:46,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:46,043 INFO L225 Difference]: With dead ends: 162
[2022-01-31 17:23:46,043 INFO L226 Difference]: Without dead ends: 103
[2022-01-31 17:23:46,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482
[2022-01-31 17:23:46,045 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 81 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:46,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 66 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:46,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2022-01-31 17:23:46,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102.
[2022-01-31 17:23:46,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 96 states have (on average 1.1041666666666667) internal successors, (106), 96 states have internal predecessors, (106), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:46,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions.
[2022-01-31 17:23:46,053 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 95
[2022-01-31 17:23:46,053 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:46,053 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions.
[2022-01-31 17:23:46,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 20 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:46,054 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions.
[2022-01-31 17:23:46,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2022-01-31 17:23:46,054 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:46,054 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:46,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20
[2022-01-31 17:23:46,055 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:46,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:46,055 INFO L85 PathProgramCache]: Analyzing trace with hash 841838555, now seen corresponding path program 18 times
[2022-01-31 17:23:46,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:46,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126720698]
[2022-01-31 17:23:46,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:46,057 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:46,057 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:46,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:46,060 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:46,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:46,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:46,301 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:46,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126720698]
[2022-01-31 17:23:46,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [126720698] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:46,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:46,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22
[2022-01-31 17:23:46,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100598195]
[2022-01-31 17:23:46,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:46,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2022-01-31 17:23:46,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:46,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2022-01-31 17:23:46,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462
[2022-01-31 17:23:46,302 INFO L87 Difference]: Start difference. First operand 102 states and 111 transitions. Second operand has 22 states, 22 states have (on average 3.5) internal successors, (77), 21 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:46,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:46,646 INFO L93 Difference]: Finished difference Result 164 states and 182 transitions.
[2022-01-31 17:23:46,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2022-01-31 17:23:46,647 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.5) internal successors, (77), 21 states have internal predecessors, (77), 2 states have call successors, (3), 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 97
[2022-01-31 17:23:46,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:46,648 INFO L225 Difference]: With dead ends: 164
[2022-01-31 17:23:46,648 INFO L226 Difference]: Without dead ends: 105
[2022-01-31 17:23:46,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640
[2022-01-31 17:23:46,649 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 83 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:46,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 61 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:46,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2022-01-31 17:23:46,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104.
[2022-01-31 17:23:46,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 98 states have (on average 1.1020408163265305) internal successors, (108), 98 states have internal predecessors, (108), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:46,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 113 transitions.
[2022-01-31 17:23:46,657 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 113 transitions. Word has length 97
[2022-01-31 17:23:46,657 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:46,657 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 113 transitions.
[2022-01-31 17:23:46,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.5) internal successors, (77), 21 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:46,657 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 113 transitions.
[2022-01-31 17:23:46,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100
[2022-01-31 17:23:46,658 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:46,658 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:46,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21
[2022-01-31 17:23:46,658 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:46,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:46,659 INFO L85 PathProgramCache]: Analyzing trace with hash 549592057, now seen corresponding path program 19 times
[2022-01-31 17:23:46,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:46,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566994076]
[2022-01-31 17:23:46,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:46,661 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:46,661 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:46,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:46,664 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:46,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:46,944 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:46,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566994076]
[2022-01-31 17:23:46,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [566994076] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:46,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:46,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23
[2022-01-31 17:23:46,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086916381]
[2022-01-31 17:23:46,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:46,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2022-01-31 17:23:46,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:46,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2022-01-31 17:23:46,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506
[2022-01-31 17:23:46,946 INFO L87 Difference]: Start difference. First operand 104 states and 113 transitions. Second operand has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 22 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:47,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:47,336 INFO L93 Difference]: Finished difference Result 166 states and 184 transitions.
[2022-01-31 17:23:47,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2022-01-31 17:23:47,337 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 22 states have internal predecessors, (79), 2 states have call successors, (3), 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 99
[2022-01-31 17:23:47,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:47,338 INFO L225 Difference]: With dead ends: 166
[2022-01-31 17:23:47,338 INFO L226 Difference]: Without dead ends: 107
[2022-01-31 17:23:47,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806
[2022-01-31 17:23:47,339 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 85 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:47,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 61 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:47,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2022-01-31 17:23:47,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106.
[2022-01-31 17:23:47,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 100 states have (on average 1.1) internal successors, (110), 100 states have internal predecessors, (110), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:47,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 115 transitions.
[2022-01-31 17:23:47,348 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 115 transitions. Word has length 99
[2022-01-31 17:23:47,348 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:47,348 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 115 transitions.
[2022-01-31 17:23:47,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 22 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:47,349 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions.
[2022-01-31 17:23:47,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102
[2022-01-31 17:23:47,349 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:47,349 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:47,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22
[2022-01-31 17:23:47,350 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:47,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:47,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1126418281, now seen corresponding path program 20 times
[2022-01-31 17:23:47,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:47,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737798088]
[2022-01-31 17:23:47,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:47,352 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:47,352 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:47,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:47,373 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:47,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:47,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:47,652 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:47,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737798088]
[2022-01-31 17:23:47,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1737798088] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:47,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:47,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24
[2022-01-31 17:23:47,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300571856]
[2022-01-31 17:23:47,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:47,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-01-31 17:23:47,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:47,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-01-31 17:23:47,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552
[2022-01-31 17:23:47,654 INFO L87 Difference]: Start difference. First operand 106 states and 115 transitions. Second operand has 24 states, 24 states have (on average 3.375) internal successors, (81), 23 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:48,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:48,062 INFO L93 Difference]: Finished difference Result 168 states and 186 transitions.
[2022-01-31 17:23:48,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2022-01-31 17:23:48,062 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.375) internal successors, (81), 23 states have internal predecessors, (81), 2 states have call successors, (3), 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 101
[2022-01-31 17:23:48,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:48,063 INFO L225 Difference]: With dead ends: 168
[2022-01-31 17:23:48,063 INFO L226 Difference]: Without dead ends: 109
[2022-01-31 17:23:48,064 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
[2022-01-31 17:23:48,064 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 87 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:48,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 66 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:48,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2022-01-31 17:23:48,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108.
[2022-01-31 17:23:48,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 102 states have (on average 1.0980392156862746) internal successors, (112), 102 states have internal predecessors, (112), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:48,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions.
[2022-01-31 17:23:48,074 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 101
[2022-01-31 17:23:48,074 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:48,074 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions.
[2022-01-31 17:23:48,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.375) internal successors, (81), 23 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:48,075 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions.
[2022-01-31 17:23:48,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104
[2022-01-31 17:23:48,075 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:48,075 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:48,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23
[2022-01-31 17:23:48,076 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:48,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:48,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1159617099, now seen corresponding path program 21 times
[2022-01-31 17:23:48,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:48,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943581636]
[2022-01-31 17:23:48,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:48,081 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:48,081 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:48,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:48,085 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:48,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:48,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:48,388 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:48,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943581636]
[2022-01-31 17:23:48,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [943581636] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:48,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:48,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25
[2022-01-31 17:23:48,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741081189]
[2022-01-31 17:23:48,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:48,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2022-01-31 17:23:48,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:48,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2022-01-31 17:23:48,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600
[2022-01-31 17:23:48,390 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand has 25 states, 25 states have (on average 3.32) internal successors, (83), 24 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:48,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:48,859 INFO L93 Difference]: Finished difference Result 170 states and 188 transitions.
[2022-01-31 17:23:48,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2022-01-31 17:23:48,859 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.32) internal successors, (83), 24 states have internal predecessors, (83), 2 states have call successors, (3), 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 103
[2022-01-31 17:23:48,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:48,860 INFO L225 Difference]: With dead ends: 170
[2022-01-31 17:23:48,860 INFO L226 Difference]: Without dead ends: 111
[2022-01-31 17:23:48,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162
[2022-01-31 17:23:48,861 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 89 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:48,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 76 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:23:48,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states.
[2022-01-31 17:23:48,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110.
[2022-01-31 17:23:48,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 104 states have (on average 1.0961538461538463) internal successors, (114), 104 states have internal predecessors, (114), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:48,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 119 transitions.
[2022-01-31 17:23:48,890 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 119 transitions. Word has length 103
[2022-01-31 17:23:48,890 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:48,890 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 119 transitions.
[2022-01-31 17:23:48,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.32) internal successors, (83), 24 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:48,890 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 119 transitions.
[2022-01-31 17:23:48,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106
[2022-01-31 17:23:48,891 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:48,891 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:48,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24
[2022-01-31 17:23:48,891 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:48,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:48,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1296057171, now seen corresponding path program 22 times
[2022-01-31 17:23:48,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:48,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156226338]
[2022-01-31 17:23:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:48,894 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:48,894 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:48,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:48,898 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:49,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:49,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:49,207 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:49,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156226338]
[2022-01-31 17:23:49,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [156226338] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:49,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:49,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26
[2022-01-31 17:23:49,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370669805]
[2022-01-31 17:23:49,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:49,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-01-31 17:23:49,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:49,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-01-31 17:23:49,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650
[2022-01-31 17:23:49,209 INFO L87 Difference]: Start difference. First operand 110 states and 119 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:49,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:49,672 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions.
[2022-01-31 17:23:49,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2022-01-31 17:23:49,673 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 2 states have call successors, (3), 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 105
[2022-01-31 17:23:49,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:49,673 INFO L225 Difference]: With dead ends: 172
[2022-01-31 17:23:49,673 INFO L226 Difference]: Without dead ends: 113
[2022-01-31 17:23:49,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352
[2022-01-31 17:23:49,675 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 91 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:49,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 71 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:23:49,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states.
[2022-01-31 17:23:49,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112.
[2022-01-31 17:23:49,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 106 states have (on average 1.0943396226415094) internal successors, (116), 106 states have internal predecessors, (116), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:49,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 121 transitions.
[2022-01-31 17:23:49,688 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 121 transitions. Word has length 105
[2022-01-31 17:23:49,689 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:49,689 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 121 transitions.
[2022-01-31 17:23:49,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:49,689 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 121 transitions.
[2022-01-31 17:23:49,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108
[2022-01-31 17:23:49,690 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:49,690 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:49,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25
[2022-01-31 17:23:49,690 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:49,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:49,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1032982159, now seen corresponding path program 23 times
[2022-01-31 17:23:49,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:49,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852508689]
[2022-01-31 17:23:49,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:49,693 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:49,693 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:49,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:49,696 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:50,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:50,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:50,033 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:50,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852508689]
[2022-01-31 17:23:50,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1852508689] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:50,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:50,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27
[2022-01-31 17:23:50,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67978936]
[2022-01-31 17:23:50,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:50,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2022-01-31 17:23:50,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:50,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2022-01-31 17:23:50,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702
[2022-01-31 17:23:50,038 INFO L87 Difference]: Start difference. First operand 112 states and 121 transitions. Second operand has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:50,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:50,573 INFO L93 Difference]: Finished difference Result 174 states and 192 transitions.
[2022-01-31 17:23:50,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2022-01-31 17:23:50,574 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 2 states have call successors, (3), 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 107
[2022-01-31 17:23:50,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:50,574 INFO L225 Difference]: With dead ends: 174
[2022-01-31 17:23:50,575 INFO L226 Difference]: Without dead ends: 115
[2022-01-31 17:23:50,576 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
[2022-01-31 17:23:50,576 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 93 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:50,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 86 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:23:50,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2022-01-31 17:23:50,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114.
[2022-01-31 17:23:50,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 108 states have (on average 1.0925925925925926) internal successors, (118), 108 states have internal predecessors, (118), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:50,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions.
[2022-01-31 17:23:50,618 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 107
[2022-01-31 17:23:50,618 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:50,618 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions.
[2022-01-31 17:23:50,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:50,618 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions.
[2022-01-31 17:23:50,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110
[2022-01-31 17:23:50,619 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:50,619 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:50,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26
[2022-01-31 17:23:50,620 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:50,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:50,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1561817073, now seen corresponding path program 24 times
[2022-01-31 17:23:50,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:50,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870754536]
[2022-01-31 17:23:50,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:50,623 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:50,623 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:50,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:50,627 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:50,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:50,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:50,958 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:50,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870754536]
[2022-01-31 17:23:50,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1870754536] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:50,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:50,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28
[2022-01-31 17:23:50,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302672315]
[2022-01-31 17:23:50,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:50,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-01-31 17:23:50,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:50,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-01-31 17:23:50,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756
[2022-01-31 17:23:50,959 INFO L87 Difference]: Start difference. First operand 114 states and 123 transitions. Second operand has 28 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 27 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:51,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:51,509 INFO L93 Difference]: Finished difference Result 176 states and 194 transitions.
[2022-01-31 17:23:51,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2022-01-31 17:23:51,510 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 27 states have internal predecessors, (89), 2 states have call successors, (3), 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 109
[2022-01-31 17:23:51,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:51,511 INFO L225 Difference]: With dead ends: 176
[2022-01-31 17:23:51,511 INFO L226 Difference]: Without dead ends: 117
[2022-01-31 17:23:51,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756
[2022-01-31 17:23:51,512 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 95 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:51,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 81 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:23:51,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states.
[2022-01-31 17:23:51,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116.
[2022-01-31 17:23:51,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 110 states have (on average 1.0909090909090908) internal successors, (120), 110 states have internal predecessors, (120), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:51,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 125 transitions.
[2022-01-31 17:23:51,524 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 125 transitions. Word has length 109
[2022-01-31 17:23:51,524 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:51,524 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 125 transitions.
[2022-01-31 17:23:51,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 27 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:51,525 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 125 transitions.
[2022-01-31 17:23:51,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112
[2022-01-31 17:23:51,525 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:51,525 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:51,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27
[2022-01-31 17:23:51,525 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:51,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:51,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1328938797, now seen corresponding path program 25 times
[2022-01-31 17:23:51,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:51,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192417364]
[2022-01-31 17:23:51,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:51,528 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:51,528 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:51,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:51,532 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:51,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:51,905 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:51,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192417364]
[2022-01-31 17:23:51,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [192417364] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:51,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:51,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29
[2022-01-31 17:23:51,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031827146]
[2022-01-31 17:23:51,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:51,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2022-01-31 17:23:51,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:51,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2022-01-31 17:23:51,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812
[2022-01-31 17:23:51,907 INFO L87 Difference]: Start difference. First operand 116 states and 125 transitions. Second operand has 29 states, 29 states have (on average 3.1379310344827585) internal successors, (91), 28 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:52,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:52,446 INFO L93 Difference]: Finished difference Result 178 states and 196 transitions.
[2022-01-31 17:23:52,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2022-01-31 17:23:52,446 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.1379310344827585) internal successors, (91), 28 states have internal predecessors, (91), 2 states have call successors, (3), 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 111
[2022-01-31 17:23:52,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:52,447 INFO L225 Difference]: With dead ends: 178
[2022-01-31 17:23:52,447 INFO L226 Difference]: Without dead ends: 119
[2022-01-31 17:23:52,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970
[2022-01-31 17:23:52,448 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 97 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:52,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 76 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:52,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states.
[2022-01-31 17:23:52,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118.
[2022-01-31 17:23:52,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 112 states have (on average 1.0892857142857142) internal successors, (122), 112 states have internal predecessors, (122), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:52,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 127 transitions.
[2022-01-31 17:23:52,461 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 127 transitions. Word has length 111
[2022-01-31 17:23:52,461 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:52,461 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 127 transitions.
[2022-01-31 17:23:52,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.1379310344827585) internal successors, (91), 28 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:52,461 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 127 transitions.
[2022-01-31 17:23:52,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114
[2022-01-31 17:23:52,462 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:52,462 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:52,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28
[2022-01-31 17:23:52,462 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:52,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:52,462 INFO L85 PathProgramCache]: Analyzing trace with hash 501489355, now seen corresponding path program 26 times
[2022-01-31 17:23:52,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:52,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419212894]
[2022-01-31 17:23:52,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:52,464 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:52,465 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:52,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:52,468 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:52,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:52,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:52,858 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:52,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419212894]
[2022-01-31 17:23:52,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1419212894] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:52,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:52,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30
[2022-01-31 17:23:52,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539555294]
[2022-01-31 17:23:52,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:52,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states
[2022-01-31 17:23:52,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:52,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2022-01-31 17:23:52,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870
[2022-01-31 17:23:52,859 INFO L87 Difference]: Start difference. First operand 118 states and 127 transitions. Second operand has 30 states, 30 states have (on average 3.1) internal successors, (93), 29 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:53,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:53,388 INFO L93 Difference]: Finished difference Result 180 states and 198 transitions.
[2022-01-31 17:23:53,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2022-01-31 17:23:53,389 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.1) internal successors, (93), 29 states have internal predecessors, (93), 2 states have call successors, (3), 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 113
[2022-01-31 17:23:53,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:53,389 INFO L225 Difference]: With dead ends: 180
[2022-01-31 17:23:53,390 INFO L226 Difference]: Without dead ends: 121
[2022-01-31 17:23:53,391 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
[2022-01-31 17:23:53,391 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 99 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:53,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 71 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:23:53,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states.
[2022-01-31 17:23:53,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120.
[2022-01-31 17:23:53,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 114 states have (on average 1.087719298245614) internal successors, (124), 114 states have internal predecessors, (124), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:53,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 129 transitions.
[2022-01-31 17:23:53,407 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 129 transitions. Word has length 113
[2022-01-31 17:23:53,408 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:53,408 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 129 transitions.
[2022-01-31 17:23:53,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.1) internal successors, (93), 29 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:53,408 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 129 transitions.
[2022-01-31 17:23:53,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116
[2022-01-31 17:23:53,408 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:53,408 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:53,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29
[2022-01-31 17:23:53,409 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:53,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:53,409 INFO L85 PathProgramCache]: Analyzing trace with hash -108474647, now seen corresponding path program 27 times
[2022-01-31 17:23:53,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:53,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183207985]
[2022-01-31 17:23:53,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:53,412 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:53,412 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:53,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:53,418 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:53,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:53,847 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:53,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183207985]
[2022-01-31 17:23:53,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [183207985] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:53,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:53,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31
[2022-01-31 17:23:53,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709215722]
[2022-01-31 17:23:53,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:53,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states
[2022-01-31 17:23:53,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:53,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants.
[2022-01-31 17:23:53,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930
[2022-01-31 17:23:53,849 INFO L87 Difference]: Start difference. First operand 120 states and 129 transitions. Second operand has 31 states, 31 states have (on average 3.064516129032258) internal successors, (95), 30 states have internal predecessors, (95), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:54,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:54,368 INFO L93 Difference]: Finished difference Result 182 states and 200 transitions.
[2022-01-31 17:23:54,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2022-01-31 17:23:54,369 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.064516129032258) internal successors, (95), 30 states have internal predecessors, (95), 2 states have call successors, (3), 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 115
[2022-01-31 17:23:54,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:54,369 INFO L225 Difference]: With dead ends: 182
[2022-01-31 17:23:54,369 INFO L226 Difference]: Without dead ends: 123
[2022-01-31 17:23:54,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422
[2022-01-31 17:23:54,371 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 101 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:54,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 61 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:54,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2022-01-31 17:23:54,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122.
[2022-01-31 17:23:54,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 116 states have (on average 1.0862068965517242) internal successors, (126), 116 states have internal predecessors, (126), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:54,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 131 transitions.
[2022-01-31 17:23:54,382 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 131 transitions. Word has length 115
[2022-01-31 17:23:54,382 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:54,382 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 131 transitions.
[2022-01-31 17:23:54,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.064516129032258) internal successors, (95), 30 states have internal predecessors, (95), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:54,382 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 131 transitions.
[2022-01-31 17:23:54,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118
[2022-01-31 17:23:54,383 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:54,383 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:54,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30
[2022-01-31 17:23:54,383 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:54,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:54,383 INFO L85 PathProgramCache]: Analyzing trace with hash 2126638983, now seen corresponding path program 28 times
[2022-01-31 17:23:54,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:54,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973803028]
[2022-01-31 17:23:54,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:54,386 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:54,386 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:54,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:54,390 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:54,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:54,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:54,829 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:54,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973803028]
[2022-01-31 17:23:54,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [973803028] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:54,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:54,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32
[2022-01-31 17:23:54,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181041502]
[2022-01-31 17:23:54,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:54,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2022-01-31 17:23:54,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:54,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2022-01-31 17:23:54,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992
[2022-01-31 17:23:54,831 INFO L87 Difference]: Start difference. First operand 122 states and 131 transitions. Second operand has 32 states, 32 states have (on average 3.03125) internal successors, (97), 31 states have internal predecessors, (97), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:55,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:55,442 INFO L93 Difference]: Finished difference Result 184 states and 202 transitions.
[2022-01-31 17:23:55,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2022-01-31 17:23:55,443 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.03125) internal successors, (97), 31 states have internal predecessors, (97), 2 states have call successors, (3), 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 117
[2022-01-31 17:23:55,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:55,443 INFO L225 Difference]: With dead ends: 184
[2022-01-31 17:23:55,444 INFO L226 Difference]: Without dead ends: 125
[2022-01-31 17:23:55,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660
[2022-01-31 17:23:55,445 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 103 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:55,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 81 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:23:55,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states.
[2022-01-31 17:23:55,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124.
[2022-01-31 17:23:55,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 118 states have (on average 1.0847457627118644) internal successors, (128), 118 states have internal predecessors, (128), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:55,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 133 transitions.
[2022-01-31 17:23:55,457 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 133 transitions. Word has length 117
[2022-01-31 17:23:55,457 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:55,457 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 133 transitions.
[2022-01-31 17:23:55,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.03125) internal successors, (97), 31 states have internal predecessors, (97), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:55,457 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 133 transitions.
[2022-01-31 17:23:55,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120
[2022-01-31 17:23:55,457 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:55,458 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:55,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31
[2022-01-31 17:23:55,458 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:55,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:55,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1707777883, now seen corresponding path program 29 times
[2022-01-31 17:23:55,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:55,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868271852]
[2022-01-31 17:23:55,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:55,460 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:55,460 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:55,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:55,464 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:55,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:55,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:55,913 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:55,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868271852]
[2022-01-31 17:23:55,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1868271852] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:55,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:55,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33
[2022-01-31 17:23:55,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077847421]
[2022-01-31 17:23:55,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:55,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states
[2022-01-31 17:23:55,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:55,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2022-01-31 17:23:55,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056
[2022-01-31 17:23:55,915 INFO L87 Difference]: Start difference. First operand 124 states and 133 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:56,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:56,489 INFO L93 Difference]: Finished difference Result 186 states and 204 transitions.
[2022-01-31 17:23:56,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2022-01-31 17:23:56,489 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 2 states have call successors, (3), 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 119
[2022-01-31 17:23:56,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:56,490 INFO L225 Difference]: With dead ends: 186
[2022-01-31 17:23:56,490 INFO L226 Difference]: Without dead ends: 127
[2022-01-31 17:23:56,492 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
[2022-01-31 17:23:56,492 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 105 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:56,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 71 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:23:56,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states.
[2022-01-31 17:23:56,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126.
[2022-01-31 17:23:56,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 120 states have (on average 1.0833333333333333) internal successors, (130), 120 states have internal predecessors, (130), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:56,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 135 transitions.
[2022-01-31 17:23:56,504 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 135 transitions. Word has length 119
[2022-01-31 17:23:56,504 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:56,504 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 135 transitions.
[2022-01-31 17:23:56,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:56,504 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 135 transitions.
[2022-01-31 17:23:56,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122
[2022-01-31 17:23:56,505 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:56,505 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:56,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32
[2022-01-31 17:23:56,505 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:56,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:56,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1500446141, now seen corresponding path program 30 times
[2022-01-31 17:23:56,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:56,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498165840]
[2022-01-31 17:23:56,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:56,507 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:56,507 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:56,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:56,511 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:56,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:56,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:56,991 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:56,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498165840]
[2022-01-31 17:23:56,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [498165840] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:56,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:56,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34
[2022-01-31 17:23:56,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969934671]
[2022-01-31 17:23:56,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:56,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states
[2022-01-31 17:23:56,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:56,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2022-01-31 17:23:56,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122
[2022-01-31 17:23:56,993 INFO L87 Difference]: Start difference. First operand 126 states and 135 transitions. Second operand has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 33 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:57,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:57,612 INFO L93 Difference]: Finished difference Result 188 states and 206 transitions.
[2022-01-31 17:23:57,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2022-01-31 17:23:57,612 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 33 states have internal predecessors, (101), 2 states have call successors, (3), 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 121
[2022-01-31 17:23:57,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:57,613 INFO L225 Difference]: With dead ends: 188
[2022-01-31 17:23:57,613 INFO L226 Difference]: Without dead ends: 129
[2022-01-31 17:23:57,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160
[2022-01-31 17:23:57,614 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 107 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:57,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 71 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:23:57,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states.
[2022-01-31 17:23:57,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128.
[2022-01-31 17:23:57,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 122 states have (on average 1.0819672131147542) internal successors, (132), 122 states have internal predecessors, (132), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:57,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 137 transitions.
[2022-01-31 17:23:57,625 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 137 transitions. Word has length 121
[2022-01-31 17:23:57,625 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:57,625 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 137 transitions.
[2022-01-31 17:23:57,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 33 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:57,625 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 137 transitions.
[2022-01-31 17:23:57,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124
[2022-01-31 17:23:57,625 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:57,625 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:57,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33
[2022-01-31 17:23:57,626 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:57,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:57,626 INFO L85 PathProgramCache]: Analyzing trace with hash 176862305, now seen corresponding path program 31 times
[2022-01-31 17:23:57,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:57,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471335931]
[2022-01-31 17:23:57,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:57,628 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:57,628 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:57,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:57,631 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:58,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:58,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:58,151 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:58,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471335931]
[2022-01-31 17:23:58,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [471335931] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:58,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:58,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35
[2022-01-31 17:23:58,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584912456]
[2022-01-31 17:23:58,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:58,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states
[2022-01-31 17:23:58,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:58,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2022-01-31 17:23:58,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190
[2022-01-31 17:23:58,153 INFO L87 Difference]: Start difference. First operand 128 states and 137 transitions. Second operand has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 34 states have internal predecessors, (103), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:58,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:23:58,806 INFO L93 Difference]: Finished difference Result 190 states and 208 transitions.
[2022-01-31 17:23:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2022-01-31 17:23:58,807 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 34 states have internal predecessors, (103), 2 states have call successors, (3), 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 123
[2022-01-31 17:23:58,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:23:58,808 INFO L225 Difference]: With dead ends: 190
[2022-01-31 17:23:58,808 INFO L226 Difference]: Without dead ends: 131
[2022-01-31 17:23:58,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422
[2022-01-31 17:23:58,809 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 109 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:23:58,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 86 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:23:58,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2022-01-31 17:23:58,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130.
[2022-01-31 17:23:58,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 124 states have (on average 1.0806451612903225) internal successors, (134), 124 states have internal predecessors, (134), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:23:58,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 139 transitions.
[2022-01-31 17:23:58,840 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 139 transitions. Word has length 123
[2022-01-31 17:23:58,841 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:23:58,841 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 139 transitions.
[2022-01-31 17:23:58,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 34 states have internal predecessors, (103), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:23:58,841 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 139 transitions.
[2022-01-31 17:23:58,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126
[2022-01-31 17:23:58,842 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:23:58,842 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:23:58,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34
[2022-01-31 17:23:58,842 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:23:58,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:23:58,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1457542911, now seen corresponding path program 32 times
[2022-01-31 17:23:58,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:23:58,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032095648]
[2022-01-31 17:23:58,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:23:58,845 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:23:58,845 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:23:58,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:23:58,850 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:23:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:59,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:23:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:23:59,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:23:59,430 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:23:59,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032095648]
[2022-01-31 17:23:59,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2032095648] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:23:59,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:23:59,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36
[2022-01-31 17:23:59,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952222461]
[2022-01-31 17:23:59,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:23:59,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states
[2022-01-31 17:23:59,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:23:59,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2022-01-31 17:23:59,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260
[2022-01-31 17:23:59,432 INFO L87 Difference]: Start difference. First operand 130 states and 139 transitions. Second operand has 36 states, 36 states have (on average 2.9166666666666665) internal successors, (105), 35 states have internal predecessors, (105), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:00,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:00,122 INFO L93 Difference]: Finished difference Result 192 states and 210 transitions.
[2022-01-31 17:24:00,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2022-01-31 17:24:00,122 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.9166666666666665) internal successors, (105), 35 states have internal predecessors, (105), 2 states have call successors, (3), 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 125
[2022-01-31 17:24:00,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:00,123 INFO L225 Difference]: With dead ends: 192
[2022-01-31 17:24:00,123 INFO L226 Difference]: Without dead ends: 133
[2022-01-31 17:24:00,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692
[2022-01-31 17:24:00,124 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 111 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:00,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 76 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:00,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states.
[2022-01-31 17:24:00,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132.
[2022-01-31 17:24:00,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 126 states have (on average 1.0793650793650793) internal successors, (136), 126 states have internal predecessors, (136), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:00,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 141 transitions.
[2022-01-31 17:24:00,139 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 141 transitions. Word has length 125
[2022-01-31 17:24:00,139 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:00,139 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 141 transitions.
[2022-01-31 17:24:00,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.9166666666666665) internal successors, (105), 35 states have internal predecessors, (105), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:00,139 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 141 transitions.
[2022-01-31 17:24:00,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128
[2022-01-31 17:24:00,139 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:00,140 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:00,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35
[2022-01-31 17:24:00,140 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:00,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:00,140 INFO L85 PathProgramCache]: Analyzing trace with hash -464008675, now seen corresponding path program 33 times
[2022-01-31 17:24:00,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:00,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794689536]
[2022-01-31 17:24:00,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:00,142 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:00,142 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:00,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:00,147 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:00,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:00,678 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:00,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794689536]
[2022-01-31 17:24:00,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1794689536] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:00,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:00,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37
[2022-01-31 17:24:00,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51261739]
[2022-01-31 17:24:00,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:00,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states
[2022-01-31 17:24:00,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:00,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2022-01-31 17:24:00,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332
[2022-01-31 17:24:00,679 INFO L87 Difference]: Start difference. First operand 132 states and 141 transitions. Second operand has 37 states, 37 states have (on average 2.891891891891892) internal successors, (107), 36 states have internal predecessors, (107), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:01,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:01,431 INFO L93 Difference]: Finished difference Result 194 states and 212 transitions.
[2022-01-31 17:24:01,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2022-01-31 17:24:01,432 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.891891891891892) internal successors, (107), 36 states have internal predecessors, (107), 2 states have call successors, (3), 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 127
[2022-01-31 17:24:01,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:01,432 INFO L225 Difference]: With dead ends: 194
[2022-01-31 17:24:01,432 INFO L226 Difference]: Without dead ends: 135
[2022-01-31 17:24:01,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970
[2022-01-31 17:24:01,434 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 113 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:01,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 66 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:01,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2022-01-31 17:24:01,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134.
[2022-01-31 17:24:01,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 128 states have (on average 1.078125) internal successors, (138), 128 states have internal predecessors, (138), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:01,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions.
[2022-01-31 17:24:01,447 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 127
[2022-01-31 17:24:01,447 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:01,447 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions.
[2022-01-31 17:24:01,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.891891891891892) internal successors, (107), 36 states have internal predecessors, (107), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:01,447 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions.
[2022-01-31 17:24:01,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2022-01-31 17:24:01,448 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:01,448 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:01,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36
[2022-01-31 17:24:01,448 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:01,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:01,448 INFO L85 PathProgramCache]: Analyzing trace with hash -239145541, now seen corresponding path program 34 times
[2022-01-31 17:24:01,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:01,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568386719]
[2022-01-31 17:24:01,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:01,450 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:01,450 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:01,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:01,455 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:02,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:02,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:02,004 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:02,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568386719]
[2022-01-31 17:24:02,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [568386719] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:02,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:02,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38
[2022-01-31 17:24:02,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155880490]
[2022-01-31 17:24:02,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:02,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states
[2022-01-31 17:24:02,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:02,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2022-01-31 17:24:02,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406
[2022-01-31 17:24:02,005 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand has 38 states, 38 states have (on average 2.8684210526315788) internal successors, (109), 37 states have internal predecessors, (109), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:02,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:02,741 INFO L93 Difference]: Finished difference Result 196 states and 214 transitions.
[2022-01-31 17:24:02,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2022-01-31 17:24:02,741 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.8684210526315788) internal successors, (109), 37 states have internal predecessors, (109), 2 states have call successors, (3), 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 129
[2022-01-31 17:24:02,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:02,742 INFO L225 Difference]: With dead ends: 196
[2022-01-31 17:24:02,742 INFO L226 Difference]: Without dead ends: 137
[2022-01-31 17:24:02,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256
[2022-01-31 17:24:02,744 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 115 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:02,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 61 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:02,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states.
[2022-01-31 17:24:02,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136.
[2022-01-31 17:24:02,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 130 states have (on average 1.0769230769230769) internal successors, (140), 130 states have internal predecessors, (140), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:02,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 145 transitions.
[2022-01-31 17:24:02,777 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 145 transitions. Word has length 129
[2022-01-31 17:24:02,777 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:02,777 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 145 transitions.
[2022-01-31 17:24:02,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.8684210526315788) internal successors, (109), 37 states have internal predecessors, (109), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:02,777 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 145 transitions.
[2022-01-31 17:24:02,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132
[2022-01-31 17:24:02,778 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:02,778 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:02,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37
[2022-01-31 17:24:02,778 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:02,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:02,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1105961433, now seen corresponding path program 35 times
[2022-01-31 17:24:02,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:02,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973311898]
[2022-01-31 17:24:02,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:02,782 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:02,782 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:02,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:02,788 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:03,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:03,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:03,352 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:03,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973311898]
[2022-01-31 17:24:03,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [973311898] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:03,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:03,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39
[2022-01-31 17:24:03,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162937832]
[2022-01-31 17:24:03,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:03,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states
[2022-01-31 17:24:03,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:03,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants.
[2022-01-31 17:24:03,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482
[2022-01-31 17:24:03,354 INFO L87 Difference]: Start difference. First operand 136 states and 145 transitions. Second operand has 39 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 38 states have internal predecessors, (111), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:04,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:04,076 INFO L93 Difference]: Finished difference Result 198 states and 216 transitions.
[2022-01-31 17:24:04,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2022-01-31 17:24:04,076 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 38 states have internal predecessors, (111), 2 states have call successors, (3), 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 131
[2022-01-31 17:24:04,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:04,080 INFO L225 Difference]: With dead ends: 198
[2022-01-31 17:24:04,080 INFO L226 Difference]: Without dead ends: 139
[2022-01-31 17:24:04,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550
[2022-01-31 17:24:04,081 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 117 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:04,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 76 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:04,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states.
[2022-01-31 17:24:04,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138.
[2022-01-31 17:24:04,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 132 states have (on average 1.0757575757575757) internal successors, (142), 132 states have internal predecessors, (142), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:04,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 147 transitions.
[2022-01-31 17:24:04,098 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 147 transitions. Word has length 131
[2022-01-31 17:24:04,098 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:04,098 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 147 transitions.
[2022-01-31 17:24:04,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 38 states have internal predecessors, (111), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:04,098 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 147 transitions.
[2022-01-31 17:24:04,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134
[2022-01-31 17:24:04,099 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:04,099 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:04,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38
[2022-01-31 17:24:04,099 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:04,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:04,100 INFO L85 PathProgramCache]: Analyzing trace with hash 968607351, now seen corresponding path program 36 times
[2022-01-31 17:24:04,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:04,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963838664]
[2022-01-31 17:24:04,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:04,102 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:04,102 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:04,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:04,107 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:04,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:04,743 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:04,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963838664]
[2022-01-31 17:24:04,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1963838664] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:04,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:04,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40
[2022-01-31 17:24:04,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58505949]
[2022-01-31 17:24:04,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:04,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states
[2022-01-31 17:24:04,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:04,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants.
[2022-01-31 17:24:04,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560
[2022-01-31 17:24:04,744 INFO L87 Difference]: Start difference. First operand 138 states and 147 transitions. Second operand has 40 states, 40 states have (on average 2.825) internal successors, (113), 39 states have internal predecessors, (113), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:05,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:05,522 INFO L93 Difference]: Finished difference Result 200 states and 218 transitions.
[2022-01-31 17:24:05,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2022-01-31 17:24:05,522 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.825) internal successors, (113), 39 states have internal predecessors, (113), 2 states have call successors, (3), 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 133
[2022-01-31 17:24:05,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:05,523 INFO L225 Difference]: With dead ends: 200
[2022-01-31 17:24:05,523 INFO L226 Difference]: Without dead ends: 141
[2022-01-31 17:24:05,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852
[2022-01-31 17:24:05,524 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 119 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:05,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 61 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:05,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states.
[2022-01-31 17:24:05,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140.
[2022-01-31 17:24:05,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 134 states have (on average 1.0746268656716418) internal successors, (144), 134 states have internal predecessors, (144), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:05,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 149 transitions.
[2022-01-31 17:24:05,540 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 149 transitions. Word has length 133
[2022-01-31 17:24:05,541 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:05,541 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 149 transitions.
[2022-01-31 17:24:05,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.825) internal successors, (113), 39 states have internal predecessors, (113), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:05,541 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 149 transitions.
[2022-01-31 17:24:05,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2022-01-31 17:24:05,542 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:05,542 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:05,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39
[2022-01-31 17:24:05,542 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:05,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:05,542 INFO L85 PathProgramCache]: Analyzing trace with hash 2115320725, now seen corresponding path program 37 times
[2022-01-31 17:24:05,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:05,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037509794]
[2022-01-31 17:24:05,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:05,545 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:05,545 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:05,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:05,550 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:06,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:06,148 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:06,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037509794]
[2022-01-31 17:24:06,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1037509794] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:06,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:06,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41
[2022-01-31 17:24:06,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363163897]
[2022-01-31 17:24:06,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:06,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states
[2022-01-31 17:24:06,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:06,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants.
[2022-01-31 17:24:06,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640
[2022-01-31 17:24:06,150 INFO L87 Difference]: Start difference. First operand 140 states and 149 transitions. Second operand has 41 states, 41 states have (on average 2.8048780487804876) internal successors, (115), 40 states have internal predecessors, (115), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:06,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:06,963 INFO L93 Difference]: Finished difference Result 202 states and 220 transitions.
[2022-01-31 17:24:06,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2022-01-31 17:24:06,963 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.8048780487804876) internal successors, (115), 40 states have internal predecessors, (115), 2 states have call successors, (3), 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 135
[2022-01-31 17:24:06,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:06,964 INFO L225 Difference]: With dead ends: 202
[2022-01-31 17:24:06,964 INFO L226 Difference]: Without dead ends: 143
[2022-01-31 17:24:06,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162
[2022-01-31 17:24:06,965 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 121 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:06,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 81 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:06,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states.
[2022-01-31 17:24:06,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142.
[2022-01-31 17:24:06,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 136 states have (on average 1.0735294117647058) internal successors, (146), 136 states have internal predecessors, (146), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:06,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 151 transitions.
[2022-01-31 17:24:06,985 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 151 transitions. Word has length 135
[2022-01-31 17:24:06,985 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:06,985 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 151 transitions.
[2022-01-31 17:24:06,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.8048780487804876) internal successors, (115), 40 states have internal predecessors, (115), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:06,985 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 151 transitions.
[2022-01-31 17:24:06,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138
[2022-01-31 17:24:06,985 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:06,986 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:06,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40
[2022-01-31 17:24:06,986 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:06,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:06,986 INFO L85 PathProgramCache]: Analyzing trace with hash 300278067, now seen corresponding path program 38 times
[2022-01-31 17:24:06,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:06,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928123913]
[2022-01-31 17:24:06,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:06,989 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:06,989 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:06,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:06,994 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:07,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:07,626 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:07,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928123913]
[2022-01-31 17:24:07,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1928123913] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:07,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:07,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42
[2022-01-31 17:24:07,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110032768]
[2022-01-31 17:24:07,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:07,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states
[2022-01-31 17:24:07,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:07,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants.
[2022-01-31 17:24:07,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722
[2022-01-31 17:24:07,627 INFO L87 Difference]: Start difference. First operand 142 states and 151 transitions. Second operand has 42 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 41 states have internal predecessors, (117), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:08,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:08,400 INFO L93 Difference]: Finished difference Result 204 states and 222 transitions.
[2022-01-31 17:24:08,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2022-01-31 17:24:08,400 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 41 states have internal predecessors, (117), 2 states have call successors, (3), 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 137
[2022-01-31 17:24:08,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:08,401 INFO L225 Difference]: With dead ends: 204
[2022-01-31 17:24:08,401 INFO L226 Difference]: Without dead ends: 145
[2022-01-31 17:24:08,402 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
[2022-01-31 17:24:08,403 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 123 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:08,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 61 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:08,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states.
[2022-01-31 17:24:08,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144.
[2022-01-31 17:24:08,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 138 states have (on average 1.0724637681159421) internal successors, (148), 138 states have internal predecessors, (148), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:08,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 153 transitions.
[2022-01-31 17:24:08,430 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 153 transitions. Word has length 137
[2022-01-31 17:24:08,431 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:08,431 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 153 transitions.
[2022-01-31 17:24:08,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 41 states have internal predecessors, (117), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:08,431 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 153 transitions.
[2022-01-31 17:24:08,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140
[2022-01-31 17:24:08,432 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:08,432 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:08,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41
[2022-01-31 17:24:08,432 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:08,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:08,432 INFO L85 PathProgramCache]: Analyzing trace with hash -198994095, now seen corresponding path program 39 times
[2022-01-31 17:24:08,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:08,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244766474]
[2022-01-31 17:24:08,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:08,435 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:08,435 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:08,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:08,440 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:09,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:09,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:09,102 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:09,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244766474]
[2022-01-31 17:24:09,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1244766474] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:09,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:09,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43
[2022-01-31 17:24:09,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392803152]
[2022-01-31 17:24:09,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:09,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states
[2022-01-31 17:24:09,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:09,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants.
[2022-01-31 17:24:09,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806
[2022-01-31 17:24:09,103 INFO L87 Difference]: Start difference. First operand 144 states and 153 transitions. Second operand has 43 states, 43 states have (on average 2.7674418604651163) internal successors, (119), 42 states have internal predecessors, (119), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:09,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:09,944 INFO L93 Difference]: Finished difference Result 206 states and 224 transitions.
[2022-01-31 17:24:09,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2022-01-31 17:24:09,944 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.7674418604651163) internal successors, (119), 42 states have internal predecessors, (119), 2 states have call successors, (3), 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 139
[2022-01-31 17:24:09,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:09,945 INFO L225 Difference]: With dead ends: 206
[2022-01-31 17:24:09,945 INFO L226 Difference]: Without dead ends: 147
[2022-01-31 17:24:09,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806
[2022-01-31 17:24:09,946 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 125 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:09,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 81 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:09,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states.
[2022-01-31 17:24:09,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146.
[2022-01-31 17:24:09,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 140 states have (on average 1.0714285714285714) internal successors, (150), 140 states have internal predecessors, (150), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:09,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 155 transitions.
[2022-01-31 17:24:09,966 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 155 transitions. Word has length 139
[2022-01-31 17:24:09,966 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:09,966 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 155 transitions.
[2022-01-31 17:24:09,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.7674418604651163) internal successors, (119), 42 states have internal predecessors, (119), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:09,966 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 155 transitions.
[2022-01-31 17:24:09,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142
[2022-01-31 17:24:09,967 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:09,967 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:09,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42
[2022-01-31 17:24:09,967 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:09,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:09,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1036795375, now seen corresponding path program 40 times
[2022-01-31 17:24:09,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:09,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986608068]
[2022-01-31 17:24:09,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:09,970 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:09,970 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:09,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:09,976 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:10,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:10,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:10,747 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:10,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986608068]
[2022-01-31 17:24:10,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [986608068] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:10,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:10,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44
[2022-01-31 17:24:10,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406441972]
[2022-01-31 17:24:10,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:10,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states
[2022-01-31 17:24:10,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:10,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants.
[2022-01-31 17:24:10,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892
[2022-01-31 17:24:10,748 INFO L87 Difference]: Start difference. First operand 146 states and 155 transitions. Second operand has 44 states, 44 states have (on average 2.75) internal successors, (121), 43 states have internal predecessors, (121), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:11,600 INFO L93 Difference]: Finished difference Result 208 states and 226 transitions.
[2022-01-31 17:24:11,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2022-01-31 17:24:11,601 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.75) internal successors, (121), 43 states have internal predecessors, (121), 2 states have call successors, (3), 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 141
[2022-01-31 17:24:11,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:11,602 INFO L225 Difference]: With dead ends: 208
[2022-01-31 17:24:11,602 INFO L226 Difference]: Without dead ends: 149
[2022-01-31 17:24:11,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140
[2022-01-31 17:24:11,604 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 127 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:11,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 66 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:11,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states.
[2022-01-31 17:24:11,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148.
[2022-01-31 17:24:11,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 142 states have (on average 1.0704225352112675) internal successors, (152), 142 states have internal predecessors, (152), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:11,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 157 transitions.
[2022-01-31 17:24:11,625 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 157 transitions. Word has length 141
[2022-01-31 17:24:11,626 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:11,626 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 157 transitions.
[2022-01-31 17:24:11,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.75) internal successors, (121), 43 states have internal predecessors, (121), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:11,626 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 157 transitions.
[2022-01-31 17:24:11,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144
[2022-01-31 17:24:11,627 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:11,627 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:11,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43
[2022-01-31 17:24:11,627 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:11,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:11,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1075464947, now seen corresponding path program 41 times
[2022-01-31 17:24:11,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:11,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650516638]
[2022-01-31 17:24:11,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:11,633 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:11,633 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:11,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:11,639 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:12,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:12,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:12,416 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:12,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650516638]
[2022-01-31 17:24:12,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [650516638] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:12,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:12,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45
[2022-01-31 17:24:12,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545416267]
[2022-01-31 17:24:12,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:12,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states
[2022-01-31 17:24:12,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:12,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2022-01-31 17:24:12,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980
[2022-01-31 17:24:12,418 INFO L87 Difference]: Start difference. First operand 148 states and 157 transitions. Second operand has 45 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 44 states have internal predecessors, (123), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:13,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:13,387 INFO L93 Difference]: Finished difference Result 210 states and 228 transitions.
[2022-01-31 17:24:13,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2022-01-31 17:24:13,388 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 44 states have internal predecessors, (123), 2 states have call successors, (3), 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 143
[2022-01-31 17:24:13,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:13,389 INFO L225 Difference]: With dead ends: 210
[2022-01-31 17:24:13,389 INFO L226 Difference]: Without dead ends: 151
[2022-01-31 17:24:13,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2838, Invalid=4644, Unknown=0, NotChecked=0, Total=7482
[2022-01-31 17:24:13,390 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 129 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:13,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 81 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:13,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states.
[2022-01-31 17:24:13,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150.
[2022-01-31 17:24:13,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 144 states have (on average 1.0694444444444444) internal successors, (154), 144 states have internal predecessors, (154), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:13,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 159 transitions.
[2022-01-31 17:24:13,405 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 159 transitions. Word has length 143
[2022-01-31 17:24:13,406 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:13,406 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 159 transitions.
[2022-01-31 17:24:13,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 44 states have internal predecessors, (123), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:13,406 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 159 transitions.
[2022-01-31 17:24:13,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146
[2022-01-31 17:24:13,407 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:13,407 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:13,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44
[2022-01-31 17:24:13,407 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:13,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:13,407 INFO L85 PathProgramCache]: Analyzing trace with hash 561896619, now seen corresponding path program 42 times
[2022-01-31 17:24:13,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:13,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335678991]
[2022-01-31 17:24:13,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:13,410 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:13,410 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:13,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:13,416 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:14,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:14,172 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:14,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335678991]
[2022-01-31 17:24:14,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [335678991] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:14,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:14,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46
[2022-01-31 17:24:14,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163163309]
[2022-01-31 17:24:14,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:14,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states
[2022-01-31 17:24:14,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:14,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants.
[2022-01-31 17:24:14,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070
[2022-01-31 17:24:14,173 INFO L87 Difference]: Start difference. First operand 150 states and 159 transitions. Second operand has 46 states, 46 states have (on average 2.717391304347826) internal successors, (125), 45 states have internal predecessors, (125), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:15,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:15,074 INFO L93 Difference]: Finished difference Result 212 states and 230 transitions.
[2022-01-31 17:24:15,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2022-01-31 17:24:15,074 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.717391304347826) internal successors, (125), 45 states have internal predecessors, (125), 2 states have call successors, (3), 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 145
[2022-01-31 17:24:15,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:15,075 INFO L225 Difference]: With dead ends: 212
[2022-01-31 17:24:15,075 INFO L226 Difference]: Without dead ends: 153
[2022-01-31 17:24:15,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2970, Invalid=4862, Unknown=0, NotChecked=0, Total=7832
[2022-01-31 17:24:15,076 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 131 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:15,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 66 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:15,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states.
[2022-01-31 17:24:15,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152.
[2022-01-31 17:24:15,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 146 states have (on average 1.0684931506849316) internal successors, (156), 146 states have internal predecessors, (156), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:15,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 161 transitions.
[2022-01-31 17:24:15,093 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 161 transitions. Word has length 145
[2022-01-31 17:24:15,093 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:15,093 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 161 transitions.
[2022-01-31 17:24:15,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.717391304347826) internal successors, (125), 45 states have internal predecessors, (125), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:15,093 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 161 transitions.
[2022-01-31 17:24:15,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148
[2022-01-31 17:24:15,094 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:15,094 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:15,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45
[2022-01-31 17:24:15,094 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:15,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:15,094 INFO L85 PathProgramCache]: Analyzing trace with hash 2108331209, now seen corresponding path program 43 times
[2022-01-31 17:24:15,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:15,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466942386]
[2022-01-31 17:24:15,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:15,097 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:15,097 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:15,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:15,103 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:15,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:15,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:15,927 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:15,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466942386]
[2022-01-31 17:24:15,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1466942386] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:15,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:15,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47
[2022-01-31 17:24:15,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424659310]
[2022-01-31 17:24:15,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:15,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states
[2022-01-31 17:24:15,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:15,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants.
[2022-01-31 17:24:15,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162
[2022-01-31 17:24:15,928 INFO L87 Difference]: Start difference. First operand 152 states and 161 transitions. Second operand has 47 states, 47 states have (on average 2.702127659574468) internal successors, (127), 46 states have internal predecessors, (127), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:16,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:16,927 INFO L93 Difference]: Finished difference Result 214 states and 232 transitions.
[2022-01-31 17:24:16,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2022-01-31 17:24:16,928 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.702127659574468) internal successors, (127), 46 states have internal predecessors, (127), 2 states have call successors, (3), 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 147
[2022-01-31 17:24:16,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:16,928 INFO L225 Difference]: With dead ends: 214
[2022-01-31 17:24:16,929 INFO L226 Difference]: Without dead ends: 155
[2022-01-31 17:24:16,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190
[2022-01-31 17:24:16,930 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 133 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:16,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 76 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:16,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states.
[2022-01-31 17:24:16,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154.
[2022-01-31 17:24:16,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 148 states have (on average 1.0675675675675675) internal successors, (158), 148 states have internal predecessors, (158), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:16,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 163 transitions.
[2022-01-31 17:24:16,949 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 163 transitions. Word has length 147
[2022-01-31 17:24:16,949 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:16,949 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 163 transitions.
[2022-01-31 17:24:16,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.702127659574468) internal successors, (127), 46 states have internal predecessors, (127), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:16,949 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 163 transitions.
[2022-01-31 17:24:16,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150
[2022-01-31 17:24:16,949 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:16,950 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:16,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46
[2022-01-31 17:24:16,950 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:16,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:16,950 INFO L85 PathProgramCache]: Analyzing trace with hash -2121679513, now seen corresponding path program 44 times
[2022-01-31 17:24:16,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:16,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444074356]
[2022-01-31 17:24:16,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:16,952 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:16,953 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:16,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:16,958 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:17,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:17,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:17,790 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:17,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444074356]
[2022-01-31 17:24:17,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1444074356] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:17,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:17,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48
[2022-01-31 17:24:17,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020895106]
[2022-01-31 17:24:17,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:17,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states
[2022-01-31 17:24:17,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:17,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants.
[2022-01-31 17:24:17,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256
[2022-01-31 17:24:17,792 INFO L87 Difference]: Start difference. First operand 154 states and 163 transitions. Second operand has 48 states, 48 states have (on average 2.6875) internal successors, (129), 47 states have internal predecessors, (129), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:18,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:18,863 INFO L93 Difference]: Finished difference Result 216 states and 234 transitions.
[2022-01-31 17:24:18,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2022-01-31 17:24:18,864 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.6875) internal successors, (129), 47 states have internal predecessors, (129), 2 states have call successors, (3), 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 149
[2022-01-31 17:24:18,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:18,865 INFO L225 Difference]: With dead ends: 216
[2022-01-31 17:24:18,865 INFO L226 Difference]: Without dead ends: 157
[2022-01-31 17:24:18,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3243, Invalid=5313, Unknown=0, NotChecked=0, Total=8556
[2022-01-31 17:24:18,867 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 135 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:18,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 96 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:18,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states.
[2022-01-31 17:24:18,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156.
[2022-01-31 17:24:18,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 150 states have (on average 1.0666666666666667) internal successors, (160), 150 states have internal predecessors, (160), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:18,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 165 transitions.
[2022-01-31 17:24:18,888 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 165 transitions. Word has length 149
[2022-01-31 17:24:18,889 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:18,889 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 165 transitions.
[2022-01-31 17:24:18,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.6875) internal successors, (129), 47 states have internal predecessors, (129), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:18,889 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 165 transitions.
[2022-01-31 17:24:18,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152
[2022-01-31 17:24:18,889 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:18,889 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:18,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47
[2022-01-31 17:24:18,890 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:18,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:18,890 INFO L85 PathProgramCache]: Analyzing trace with hash 172045957, now seen corresponding path program 45 times
[2022-01-31 17:24:18,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:18,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373404231]
[2022-01-31 17:24:18,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:18,892 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:18,892 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:18,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:18,898 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:19,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:19,802 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:19,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373404231]
[2022-01-31 17:24:19,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1373404231] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:19,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:19,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49
[2022-01-31 17:24:19,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215750118]
[2022-01-31 17:24:19,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:19,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states
[2022-01-31 17:24:19,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:19,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants.
[2022-01-31 17:24:19,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352
[2022-01-31 17:24:19,803 INFO L87 Difference]: Start difference. First operand 156 states and 165 transitions. Second operand has 49 states, 49 states have (on average 2.673469387755102) internal successors, (131), 48 states have internal predecessors, (131), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:20,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:20,860 INFO L93 Difference]: Finished difference Result 218 states and 236 transitions.
[2022-01-31 17:24:20,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states.
[2022-01-31 17:24:20,860 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.673469387755102) internal successors, (131), 48 states have internal predecessors, (131), 2 states have call successors, (3), 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 151
[2022-01-31 17:24:20,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:20,861 INFO L225 Difference]: With dead ends: 218
[2022-01-31 17:24:20,861 INFO L226 Difference]: Without dead ends: 159
[2022-01-31 17:24:20,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930
[2022-01-31 17:24:20,863 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 137 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:20,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 76 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:20,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states.
[2022-01-31 17:24:20,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158.
[2022-01-31 17:24:20,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 152 states have (on average 1.0657894736842106) internal successors, (162), 152 states have internal predecessors, (162), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:20,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 167 transitions.
[2022-01-31 17:24:20,887 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 167 transitions. Word has length 151
[2022-01-31 17:24:20,887 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:20,887 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 167 transitions.
[2022-01-31 17:24:20,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.673469387755102) internal successors, (131), 48 states have internal predecessors, (131), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:20,887 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 167 transitions.
[2022-01-31 17:24:20,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2022-01-31 17:24:20,888 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:20,888 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:20,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48
[2022-01-31 17:24:20,888 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:20,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:20,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1123999779, now seen corresponding path program 46 times
[2022-01-31 17:24:20,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:20,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111825248]
[2022-01-31 17:24:20,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:20,891 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:20,891 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:20,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:20,898 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:21,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:21,827 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:21,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111825248]
[2022-01-31 17:24:21,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2111825248] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:21,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:21,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50
[2022-01-31 17:24:21,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350302359]
[2022-01-31 17:24:21,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:21,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states
[2022-01-31 17:24:21,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:21,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants.
[2022-01-31 17:24:21,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450
[2022-01-31 17:24:21,829 INFO L87 Difference]: Start difference. First operand 158 states and 167 transitions. Second operand has 50 states, 50 states have (on average 2.66) internal successors, (133), 49 states have internal predecessors, (133), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:22,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:22,892 INFO L93 Difference]: Finished difference Result 220 states and 238 transitions.
[2022-01-31 17:24:22,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2022-01-31 17:24:22,892 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.66) internal successors, (133), 49 states have internal predecessors, (133), 2 states have call successors, (3), 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 153
[2022-01-31 17:24:22,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:22,893 INFO L225 Difference]: With dead ends: 220
[2022-01-31 17:24:22,893 INFO L226 Difference]: Without dead ends: 161
[2022-01-31 17:24:22,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3528, Invalid=5784, Unknown=0, NotChecked=0, Total=9312
[2022-01-31 17:24:22,895 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 139 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:22,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 56 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:22,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states.
[2022-01-31 17:24:22,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160.
[2022-01-31 17:24:22,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 154 states have (on average 1.0649350649350648) internal successors, (164), 154 states have internal predecessors, (164), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:22,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 169 transitions.
[2022-01-31 17:24:22,920 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 169 transitions. Word has length 153
[2022-01-31 17:24:22,920 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:22,920 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 169 transitions.
[2022-01-31 17:24:22,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.66) internal successors, (133), 49 states have internal predecessors, (133), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:22,921 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 169 transitions.
[2022-01-31 17:24:22,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156
[2022-01-31 17:24:22,921 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:22,922 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:22,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49
[2022-01-31 17:24:22,922 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:22,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:22,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1123588673, now seen corresponding path program 47 times
[2022-01-31 17:24:22,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:22,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288582486]
[2022-01-31 17:24:22,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:22,924 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:22,924 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:22,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:22,931 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:23,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:23,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:23,824 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:23,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288582486]
[2022-01-31 17:24:23,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [288582486] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:23,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:23,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51
[2022-01-31 17:24:23,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846127721]
[2022-01-31 17:24:23,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:23,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states
[2022-01-31 17:24:23,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:23,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants.
[2022-01-31 17:24:23,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550
[2022-01-31 17:24:23,825 INFO L87 Difference]: Start difference. First operand 160 states and 169 transitions. Second operand has 51 states, 51 states have (on average 2.6470588235294117) internal successors, (135), 50 states have internal predecessors, (135), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:24,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:24,939 INFO L93 Difference]: Finished difference Result 222 states and 240 transitions.
[2022-01-31 17:24:24,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states.
[2022-01-31 17:24:24,940 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.6470588235294117) internal successors, (135), 50 states have internal predecessors, (135), 2 states have call successors, (3), 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 155
[2022-01-31 17:24:24,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:24,941 INFO L225 Difference]: With dead ends: 222
[2022-01-31 17:24:24,941 INFO L226 Difference]: Without dead ends: 163
[2022-01-31 17:24:24,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702
[2022-01-31 17:24:24,942 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 141 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:24,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 81 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:24,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states.
[2022-01-31 17:24:24,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162.
[2022-01-31 17:24:24,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 156 states have (on average 1.064102564102564) internal successors, (166), 156 states have internal predecessors, (166), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:24,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 171 transitions.
[2022-01-31 17:24:24,968 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 171 transitions. Word has length 155
[2022-01-31 17:24:24,968 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:24,969 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 171 transitions.
[2022-01-31 17:24:24,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.6470588235294117) internal successors, (135), 50 states have internal predecessors, (135), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:24,969 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 171 transitions.
[2022-01-31 17:24:24,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158
[2022-01-31 17:24:24,970 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:24,970 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:24,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50
[2022-01-31 17:24:24,970 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:24,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:24,970 INFO L85 PathProgramCache]: Analyzing trace with hash 728515807, now seen corresponding path program 48 times
[2022-01-31 17:24:24,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:24,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617944189]
[2022-01-31 17:24:24,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:24,972 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:24,972 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:24,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:24,979 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:26,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:26,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:26,005 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:26,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617944189]
[2022-01-31 17:24:26,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [617944189] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:26,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:26,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52
[2022-01-31 17:24:26,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691415559]
[2022-01-31 17:24:26,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:26,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states
[2022-01-31 17:24:26,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:26,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants.
[2022-01-31 17:24:26,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652
[2022-01-31 17:24:26,007 INFO L87 Difference]: Start difference. First operand 162 states and 171 transitions. Second operand has 52 states, 52 states have (on average 2.6346153846153846) internal successors, (137), 51 states have internal predecessors, (137), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:27,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:27,198 INFO L93 Difference]: Finished difference Result 224 states and 242 transitions.
[2022-01-31 17:24:27,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states.
[2022-01-31 17:24:27,199 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.6346153846153846) internal successors, (137), 51 states have internal predecessors, (137), 2 states have call successors, (3), 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 157
[2022-01-31 17:24:27,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:27,200 INFO L225 Difference]: With dead ends: 224
[2022-01-31 17:24:27,200 INFO L226 Difference]: Without dead ends: 165
[2022-01-31 17:24:27,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3825, Invalid=6275, Unknown=0, NotChecked=0, Total=10100
[2022-01-31 17:24:27,202 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 143 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:27,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 76 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:27,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states.
[2022-01-31 17:24:27,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164.
[2022-01-31 17:24:27,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 158 states have (on average 1.0632911392405062) internal successors, (168), 158 states have internal predecessors, (168), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:27,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 173 transitions.
[2022-01-31 17:24:27,229 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 173 transitions. Word has length 157
[2022-01-31 17:24:27,229 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:27,229 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 173 transitions.
[2022-01-31 17:24:27,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.6346153846153846) internal successors, (137), 51 states have internal predecessors, (137), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:27,230 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 173 transitions.
[2022-01-31 17:24:27,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160
[2022-01-31 17:24:27,230 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:27,230 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:27,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51
[2022-01-31 17:24:27,231 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:27,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:27,231 INFO L85 PathProgramCache]: Analyzing trace with hash -979386371, now seen corresponding path program 49 times
[2022-01-31 17:24:27,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:27,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773297316]
[2022-01-31 17:24:27,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:27,233 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:27,233 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:27,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:27,241 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:28,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:28,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:28,264 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:28,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773297316]
[2022-01-31 17:24:28,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1773297316] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:28,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:28,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53
[2022-01-31 17:24:28,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471930986]
[2022-01-31 17:24:28,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:28,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states
[2022-01-31 17:24:28,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:28,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants.
[2022-01-31 17:24:28,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756
[2022-01-31 17:24:28,265 INFO L87 Difference]: Start difference. First operand 164 states and 173 transitions. Second operand has 53 states, 53 states have (on average 2.6226415094339623) internal successors, (139), 52 states have internal predecessors, (139), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:29,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:29,439 INFO L93 Difference]: Finished difference Result 226 states and 244 transitions.
[2022-01-31 17:24:29,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2022-01-31 17:24:29,439 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.6226415094339623) internal successors, (139), 52 states have internal predecessors, (139), 2 states have call successors, (3), 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 159
[2022-01-31 17:24:29,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:29,440 INFO L225 Difference]: With dead ends: 226
[2022-01-31 17:24:29,440 INFO L226 Difference]: Without dead ends: 167
[2022-01-31 17:24:29,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506
[2022-01-31 17:24:29,442 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 145 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:29,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 66 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:29,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states.
[2022-01-31 17:24:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166.
[2022-01-31 17:24:29,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 160 states have (on average 1.0625) internal successors, (170), 160 states have internal predecessors, (170), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:29,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 175 transitions.
[2022-01-31 17:24:29,476 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 175 transitions. Word has length 159
[2022-01-31 17:24:29,477 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:29,477 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 175 transitions.
[2022-01-31 17:24:29,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.6226415094339623) internal successors, (139), 52 states have internal predecessors, (139), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:29,477 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 175 transitions.
[2022-01-31 17:24:29,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162
[2022-01-31 17:24:29,477 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:29,477 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:29,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52
[2022-01-31 17:24:29,478 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:29,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:29,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1595872357, now seen corresponding path program 50 times
[2022-01-31 17:24:29,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:29,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85752830]
[2022-01-31 17:24:29,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:29,480 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:29,480 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:29,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:29,486 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:30,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:30,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:30,510 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:30,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85752830]
[2022-01-31 17:24:30,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [85752830] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:30,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:30,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54
[2022-01-31 17:24:30,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137518143]
[2022-01-31 17:24:30,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:30,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states
[2022-01-31 17:24:30,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:30,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants.
[2022-01-31 17:24:30,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862
[2022-01-31 17:24:30,511 INFO L87 Difference]: Start difference. First operand 166 states and 175 transitions. Second operand has 54 states, 54 states have (on average 2.611111111111111) internal successors, (141), 53 states have internal predecessors, (141), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:31,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:31,768 INFO L93 Difference]: Finished difference Result 228 states and 246 transitions.
[2022-01-31 17:24:31,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states.
[2022-01-31 17:24:31,768 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.611111111111111) internal successors, (141), 53 states have internal predecessors, (141), 2 states have call successors, (3), 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 161
[2022-01-31 17:24:31,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:31,769 INFO L225 Difference]: With dead ends: 228
[2022-01-31 17:24:31,769 INFO L226 Difference]: Without dead ends: 169
[2022-01-31 17:24:31,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920
[2022-01-31 17:24:31,770 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 147 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:31,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 76 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:31,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states.
[2022-01-31 17:24:31,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168.
[2022-01-31 17:24:31,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 162 states have (on average 1.0617283950617284) internal successors, (172), 162 states have internal predecessors, (172), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:31,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 177 transitions.
[2022-01-31 17:24:31,798 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 177 transitions. Word has length 161
[2022-01-31 17:24:31,798 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:31,798 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 177 transitions.
[2022-01-31 17:24:31,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.611111111111111) internal successors, (141), 53 states have internal predecessors, (141), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:31,798 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 177 transitions.
[2022-01-31 17:24:31,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164
[2022-01-31 17:24:31,799 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:31,799 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:31,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53
[2022-01-31 17:24:31,800 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:31,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:31,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1333418055, now seen corresponding path program 51 times
[2022-01-31 17:24:31,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:31,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246941082]
[2022-01-31 17:24:31,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:31,802 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:31,802 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:31,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:31,811 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:32,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:32,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:32,819 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:32,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246941082]
[2022-01-31 17:24:32,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [246941082] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:32,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:32,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55
[2022-01-31 17:24:32,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447881129]
[2022-01-31 17:24:32,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:32,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states
[2022-01-31 17:24:32,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:32,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants.
[2022-01-31 17:24:32,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970
[2022-01-31 17:24:32,821 INFO L87 Difference]: Start difference. First operand 168 states and 177 transitions. Second operand has 55 states, 55 states have (on average 2.6) internal successors, (143), 54 states have internal predecessors, (143), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:34,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:34,073 INFO L93 Difference]: Finished difference Result 230 states and 248 transitions.
[2022-01-31 17:24:34,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2022-01-31 17:24:34,074 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.6) internal successors, (143), 54 states have internal predecessors, (143), 2 states have call successors, (3), 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 163
[2022-01-31 17:24:34,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:34,074 INFO L225 Difference]: With dead ends: 230
[2022-01-31 17:24:34,074 INFO L226 Difference]: Without dead ends: 171
[2022-01-31 17:24:34,075 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
[2022-01-31 17:24:34,076 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 149 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:34,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 71 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:34,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states.
[2022-01-31 17:24:34,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170.
[2022-01-31 17:24:34,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 164 states have (on average 1.0609756097560976) internal successors, (174), 164 states have internal predecessors, (174), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:34,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 179 transitions.
[2022-01-31 17:24:34,105 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 179 transitions. Word has length 163
[2022-01-31 17:24:34,105 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:34,105 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 179 transitions.
[2022-01-31 17:24:34,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.6) internal successors, (143), 54 states have internal predecessors, (143), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:34,106 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 179 transitions.
[2022-01-31 17:24:34,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166
[2022-01-31 17:24:34,106 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:34,106 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:34,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54
[2022-01-31 17:24:34,107 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:34,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:34,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1777062999, now seen corresponding path program 52 times
[2022-01-31 17:24:34,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:34,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883033994]
[2022-01-31 17:24:34,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:34,109 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:34,109 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:34,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:34,118 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:35,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:35,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:35,212 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:35,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883033994]
[2022-01-31 17:24:35,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1883033994] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:35,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:35,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56
[2022-01-31 17:24:35,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359258289]
[2022-01-31 17:24:35,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:35,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states
[2022-01-31 17:24:35,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:35,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants.
[2022-01-31 17:24:35,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080
[2022-01-31 17:24:35,215 INFO L87 Difference]: Start difference. First operand 170 states and 179 transitions. Second operand has 56 states, 56 states have (on average 2.5892857142857144) internal successors, (145), 55 states have internal predecessors, (145), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:36,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:36,478 INFO L93 Difference]: Finished difference Result 232 states and 250 transitions.
[2022-01-31 17:24:36,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states.
[2022-01-31 17:24:36,479 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.5892857142857144) internal successors, (145), 55 states have internal predecessors, (145), 2 states have call successors, (3), 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 165
[2022-01-31 17:24:36,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:36,479 INFO L225 Difference]: With dead ends: 232
[2022-01-31 17:24:36,479 INFO L226 Difference]: Without dead ends: 173
[2022-01-31 17:24:36,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4455, Invalid=7317, Unknown=0, NotChecked=0, Total=11772
[2022-01-31 17:24:36,481 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 151 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:36,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 61 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:24:36,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states.
[2022-01-31 17:24:36,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172.
[2022-01-31 17:24:36,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 166 states have (on average 1.0602409638554218) internal successors, (176), 166 states have internal predecessors, (176), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:36,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 181 transitions.
[2022-01-31 17:24:36,504 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 181 transitions. Word has length 165
[2022-01-31 17:24:36,504 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:36,504 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 181 transitions.
[2022-01-31 17:24:36,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.5892857142857144) internal successors, (145), 55 states have internal predecessors, (145), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:36,504 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 181 transitions.
[2022-01-31 17:24:36,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168
[2022-01-31 17:24:36,504 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:36,504 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:36,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55
[2022-01-31 17:24:36,505 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:36,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:36,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1652117877, now seen corresponding path program 53 times
[2022-01-31 17:24:36,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:36,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111543226]
[2022-01-31 17:24:36,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:36,507 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:36,507 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:36,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:36,515 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:37,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:37,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:37,616 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:37,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111543226]
[2022-01-31 17:24:37,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [111543226] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:37,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:37,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57
[2022-01-31 17:24:37,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30820136]
[2022-01-31 17:24:37,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:37,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states
[2022-01-31 17:24:37,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:37,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants.
[2022-01-31 17:24:37,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192
[2022-01-31 17:24:37,618 INFO L87 Difference]: Start difference. First operand 172 states and 181 transitions. Second operand has 57 states, 57 states have (on average 2.5789473684210527) internal successors, (147), 56 states have internal predecessors, (147), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:38,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:38,980 INFO L93 Difference]: Finished difference Result 234 states and 252 transitions.
[2022-01-31 17:24:38,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states.
[2022-01-31 17:24:38,980 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.5789473684210527) internal successors, (147), 56 states have internal predecessors, (147), 2 states have call successors, (3), 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 167
[2022-01-31 17:24:38,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:38,981 INFO L225 Difference]: With dead ends: 234
[2022-01-31 17:24:38,981 INFO L226 Difference]: Without dead ends: 175
[2022-01-31 17:24:38,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4620, Invalid=7590, Unknown=0, NotChecked=0, Total=12210
[2022-01-31 17:24:38,983 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 153 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:38,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 76 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:38,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states.
[2022-01-31 17:24:39,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174.
[2022-01-31 17:24:39,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 168 states have (on average 1.0595238095238095) internal successors, (178), 168 states have internal predecessors, (178), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:39,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 183 transitions.
[2022-01-31 17:24:39,027 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 183 transitions. Word has length 167
[2022-01-31 17:24:39,028 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:39,028 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 183 transitions.
[2022-01-31 17:24:39,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.5789473684210527) internal successors, (147), 56 states have internal predecessors, (147), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:39,028 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 183 transitions.
[2022-01-31 17:24:39,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170
[2022-01-31 17:24:39,029 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:39,029 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:39,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56
[2022-01-31 17:24:39,029 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:39,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:39,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1838939923, now seen corresponding path program 54 times
[2022-01-31 17:24:39,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:39,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039217743]
[2022-01-31 17:24:39,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:39,031 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:39,031 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:39,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:39,041 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:40,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:40,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:40,156 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:40,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039217743]
[2022-01-31 17:24:40,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2039217743] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:40,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:40,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58
[2022-01-31 17:24:40,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647873293]
[2022-01-31 17:24:40,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:40,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states
[2022-01-31 17:24:40,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:40,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants.
[2022-01-31 17:24:40,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306
[2022-01-31 17:24:40,158 INFO L87 Difference]: Start difference. First operand 174 states and 183 transitions. Second operand has 58 states, 58 states have (on average 2.5689655172413794) internal successors, (149), 57 states have internal predecessors, (149), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:41,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:41,558 INFO L93 Difference]: Finished difference Result 236 states and 254 transitions.
[2022-01-31 17:24:41,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states.
[2022-01-31 17:24:41,559 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.5689655172413794) internal successors, (149), 57 states have internal predecessors, (149), 2 states have call successors, (3), 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 169
[2022-01-31 17:24:41,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:41,560 INFO L225 Difference]: With dead ends: 236
[2022-01-31 17:24:41,560 INFO L226 Difference]: Without dead ends: 177
[2022-01-31 17:24:41,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4788, Invalid=7868, Unknown=0, NotChecked=0, Total=12656
[2022-01-31 17:24:41,561 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 155 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:41,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 81 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:41,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states.
[2022-01-31 17:24:41,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176.
[2022-01-31 17:24:41,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 170 states have (on average 1.0588235294117647) internal successors, (180), 170 states have internal predecessors, (180), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:41,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 185 transitions.
[2022-01-31 17:24:41,585 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 185 transitions. Word has length 169
[2022-01-31 17:24:41,585 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:41,585 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 185 transitions.
[2022-01-31 17:24:41,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.5689655172413794) internal successors, (149), 57 states have internal predecessors, (149), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:41,585 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 185 transitions.
[2022-01-31 17:24:41,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172
[2022-01-31 17:24:41,586 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:41,586 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:41,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57
[2022-01-31 17:24:41,586 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:41,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:41,586 INFO L85 PathProgramCache]: Analyzing trace with hash 986299697, now seen corresponding path program 55 times
[2022-01-31 17:24:41,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:41,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157402585]
[2022-01-31 17:24:41,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:41,588 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:41,588 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:41,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:41,598 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:42,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:42,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:42,770 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:42,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157402585]
[2022-01-31 17:24:42,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [157402585] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:42,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:42,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59
[2022-01-31 17:24:42,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158070214]
[2022-01-31 17:24:42,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:42,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states
[2022-01-31 17:24:42,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:42,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants.
[2022-01-31 17:24:42,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422
[2022-01-31 17:24:42,772 INFO L87 Difference]: Start difference. First operand 176 states and 185 transitions. Second operand has 59 states, 59 states have (on average 2.559322033898305) internal successors, (151), 58 states have internal predecessors, (151), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:44,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:44,178 INFO L93 Difference]: Finished difference Result 238 states and 256 transitions.
[2022-01-31 17:24:44,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states.
[2022-01-31 17:24:44,178 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.559322033898305) internal successors, (151), 58 states have internal predecessors, (151), 2 states have call successors, (3), 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 171
[2022-01-31 17:24:44,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:44,179 INFO L225 Difference]: With dead ends: 238
[2022-01-31 17:24:44,179 INFO L226 Difference]: Without dead ends: 179
[2022-01-31 17:24:44,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110
[2022-01-31 17:24:44,180 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 157 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:44,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 66 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:44,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states.
[2022-01-31 17:24:44,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178.
[2022-01-31 17:24:44,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 172 states have (on average 1.058139534883721) internal successors, (182), 172 states have internal predecessors, (182), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:44,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 187 transitions.
[2022-01-31 17:24:44,203 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 187 transitions. Word has length 171
[2022-01-31 17:24:44,203 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:44,203 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 187 transitions.
[2022-01-31 17:24:44,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.559322033898305) internal successors, (151), 58 states have internal predecessors, (151), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:44,203 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 187 transitions.
[2022-01-31 17:24:44,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174
[2022-01-31 17:24:44,204 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:44,204 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:44,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58
[2022-01-31 17:24:44,204 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:44,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:44,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1937796047, now seen corresponding path program 56 times
[2022-01-31 17:24:44,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:44,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432093480]
[2022-01-31 17:24:44,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:44,206 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:44,207 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:44,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:44,216 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:45,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:45,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:45,445 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:45,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432093480]
[2022-01-31 17:24:45,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1432093480] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:45,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:45,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60
[2022-01-31 17:24:45,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620928174]
[2022-01-31 17:24:45,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:45,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states
[2022-01-31 17:24:45,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:45,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants.
[2022-01-31 17:24:45,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540
[2022-01-31 17:24:45,447 INFO L87 Difference]: Start difference. First operand 178 states and 187 transitions. Second operand has 60 states, 60 states have (on average 2.55) internal successors, (153), 59 states have internal predecessors, (153), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:46,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:46,946 INFO L93 Difference]: Finished difference Result 240 states and 258 transitions.
[2022-01-31 17:24:46,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2022-01-31 17:24:46,946 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.55) internal successors, (153), 59 states have internal predecessors, (153), 2 states have call successors, (3), 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 173
[2022-01-31 17:24:46,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:46,947 INFO L225 Difference]: With dead ends: 240
[2022-01-31 17:24:46,947 INFO L226 Difference]: Without dead ends: 181
[2022-01-31 17:24:46,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5133, Invalid=8439, Unknown=0, NotChecked=0, Total=13572
[2022-01-31 17:24:46,948 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 159 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:46,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 76 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:46,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states.
[2022-01-31 17:24:46,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180.
[2022-01-31 17:24:46,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 174 states have (on average 1.0574712643678161) internal successors, (184), 174 states have internal predecessors, (184), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:46,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 189 transitions.
[2022-01-31 17:24:46,973 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 189 transitions. Word has length 173
[2022-01-31 17:24:46,973 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:46,973 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 189 transitions.
[2022-01-31 17:24:46,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.55) internal successors, (153), 59 states have internal predecessors, (153), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:46,974 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 189 transitions.
[2022-01-31 17:24:46,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176
[2022-01-31 17:24:46,974 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:46,974 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:46,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59
[2022-01-31 17:24:46,975 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:46,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:46,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1497754349, now seen corresponding path program 57 times
[2022-01-31 17:24:46,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:46,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814067435]
[2022-01-31 17:24:46,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:46,977 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:46,977 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:46,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:46,987 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:48,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:48,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:48,266 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:48,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814067435]
[2022-01-31 17:24:48,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [814067435] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:48,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:48,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61
[2022-01-31 17:24:48,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881722495]
[2022-01-31 17:24:48,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:48,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states
[2022-01-31 17:24:48,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:48,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants.
[2022-01-31 17:24:48,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660
[2022-01-31 17:24:48,269 INFO L87 Difference]: Start difference. First operand 180 states and 189 transitions. Second operand has 61 states, 61 states have (on average 2.540983606557377) internal successors, (155), 60 states have internal predecessors, (155), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:49,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:49,806 INFO L93 Difference]: Finished difference Result 242 states and 260 transitions.
[2022-01-31 17:24:49,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states.
[2022-01-31 17:24:49,806 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.540983606557377) internal successors, (155), 60 states have internal predecessors, (155), 2 states have call successors, (3), 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 175
[2022-01-31 17:24:49,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:49,807 INFO L225 Difference]: With dead ends: 242
[2022-01-31 17:24:49,807 INFO L226 Difference]: Without dead ends: 183
[2022-01-31 17:24:49,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=5310, Invalid=8732, Unknown=0, NotChecked=0, Total=14042
[2022-01-31 17:24:49,808 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 161 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:49,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 81 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:49,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states.
[2022-01-31 17:24:49,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182.
[2022-01-31 17:24:49,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 176 states have (on average 1.0568181818181819) internal successors, (186), 176 states have internal predecessors, (186), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:49,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 191 transitions.
[2022-01-31 17:24:49,831 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 191 transitions. Word has length 175
[2022-01-31 17:24:49,832 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:49,832 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 191 transitions.
[2022-01-31 17:24:49,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.540983606557377) internal successors, (155), 60 states have internal predecessors, (155), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:49,832 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 191 transitions.
[2022-01-31 17:24:49,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178
[2022-01-31 17:24:49,832 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:49,833 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:49,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60
[2022-01-31 17:24:49,833 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:49,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:49,833 INFO L85 PathProgramCache]: Analyzing trace with hash -475522421, now seen corresponding path program 58 times
[2022-01-31 17:24:49,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:49,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898186281]
[2022-01-31 17:24:49,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:49,835 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:49,835 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:49,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:49,842 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:51,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:51,090 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:51,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898186281]
[2022-01-31 17:24:51,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1898186281] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:51,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:51,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62
[2022-01-31 17:24:51,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054526460]
[2022-01-31 17:24:51,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:51,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states
[2022-01-31 17:24:51,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:51,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants.
[2022-01-31 17:24:51,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782
[2022-01-31 17:24:51,092 INFO L87 Difference]: Start difference. First operand 182 states and 191 transitions. Second operand has 62 states, 62 states have (on average 2.532258064516129) internal successors, (157), 61 states have internal predecessors, (157), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:52,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:52,638 INFO L93 Difference]: Finished difference Result 244 states and 262 transitions.
[2022-01-31 17:24:52,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states.
[2022-01-31 17:24:52,638 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.532258064516129) internal successors, (157), 61 states have internal predecessors, (157), 2 states have call successors, (3), 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 177
[2022-01-31 17:24:52,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:52,639 INFO L225 Difference]: With dead ends: 244
[2022-01-31 17:24:52,639 INFO L226 Difference]: Without dead ends: 185
[2022-01-31 17:24:52,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=5490, Invalid=9030, Unknown=0, NotChecked=0, Total=14520
[2022-01-31 17:24:52,640 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 163 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:52,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 66 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:52,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states.
[2022-01-31 17:24:52,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184.
[2022-01-31 17:24:52,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 178 states have (on average 1.0561797752808988) internal successors, (188), 178 states have internal predecessors, (188), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:52,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 193 transitions.
[2022-01-31 17:24:52,666 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 193 transitions. Word has length 177
[2022-01-31 17:24:52,666 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:52,666 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 193 transitions.
[2022-01-31 17:24:52,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.532258064516129) internal successors, (157), 61 states have internal predecessors, (157), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:52,666 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 193 transitions.
[2022-01-31 17:24:52,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180
[2022-01-31 17:24:52,667 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:52,667 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:52,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61
[2022-01-31 17:24:52,667 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:52,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:52,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1581046441, now seen corresponding path program 59 times
[2022-01-31 17:24:52,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:52,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379981408]
[2022-01-31 17:24:52,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:52,669 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:52,669 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:52,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:52,678 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:53,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:53,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:53,970 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:53,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379981408]
[2022-01-31 17:24:53,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1379981408] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:53,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:53,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63
[2022-01-31 17:24:53,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328438643]
[2022-01-31 17:24:53,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:53,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states
[2022-01-31 17:24:53,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:53,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants.
[2022-01-31 17:24:53,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906
[2022-01-31 17:24:53,972 INFO L87 Difference]: Start difference. First operand 184 states and 193 transitions. Second operand has 63 states, 63 states have (on average 2.5238095238095237) internal successors, (159), 62 states have internal predecessors, (159), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:55,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:55,610 INFO L93 Difference]: Finished difference Result 246 states and 264 transitions.
[2022-01-31 17:24:55,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states.
[2022-01-31 17:24:55,611 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.5238095238095237) internal successors, (159), 62 states have internal predecessors, (159), 2 states have call successors, (3), 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 179
[2022-01-31 17:24:55,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:55,611 INFO L225 Difference]: With dead ends: 246
[2022-01-31 17:24:55,612 INFO L226 Difference]: Without dead ends: 187
[2022-01-31 17:24:55,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006
[2022-01-31 17:24:55,613 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 165 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:55,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 86 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:55,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states.
[2022-01-31 17:24:55,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 186.
[2022-01-31 17:24:55,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 180 states have (on average 1.0555555555555556) internal successors, (190), 180 states have internal predecessors, (190), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:55,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 195 transitions.
[2022-01-31 17:24:55,638 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 195 transitions. Word has length 179
[2022-01-31 17:24:55,638 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:55,638 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 195 transitions.
[2022-01-31 17:24:55,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.5238095238095237) internal successors, (159), 62 states have internal predecessors, (159), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:55,638 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 195 transitions.
[2022-01-31 17:24:55,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182
[2022-01-31 17:24:55,639 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:55,639 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:55,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62
[2022-01-31 17:24:55,639 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:55,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:55,639 INFO L85 PathProgramCache]: Analyzing trace with hash -2036200633, now seen corresponding path program 60 times
[2022-01-31 17:24:55,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:55,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727029]
[2022-01-31 17:24:55,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:55,641 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:55,641 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:55,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:55,649 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:56,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:24:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:24:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:24:56,964 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:24:56,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727029]
[2022-01-31 17:24:56,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1727029] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:24:56,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:24:56,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64
[2022-01-31 17:24:56,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646383096]
[2022-01-31 17:24:56,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:24:56,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states
[2022-01-31 17:24:56,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:24:56,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants.
[2022-01-31 17:24:56,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032
[2022-01-31 17:24:56,966 INFO L87 Difference]: Start difference. First operand 186 states and 195 transitions. Second operand has 64 states, 64 states have (on average 2.515625) internal successors, (161), 63 states have internal predecessors, (161), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:58,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:24:58,606 INFO L93 Difference]: Finished difference Result 248 states and 266 transitions.
[2022-01-31 17:24:58,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states.
[2022-01-31 17:24:58,606 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.515625) internal successors, (161), 63 states have internal predecessors, (161), 2 states have call successors, (3), 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 181
[2022-01-31 17:24:58,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:24:58,607 INFO L225 Difference]: With dead ends: 248
[2022-01-31 17:24:58,607 INFO L226 Difference]: Without dead ends: 189
[2022-01-31 17:24:58,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1890 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5859, Invalid=9641, Unknown=0, NotChecked=0, Total=15500
[2022-01-31 17:24:58,608 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 167 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:24:58,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 71 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:24:58,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states.
[2022-01-31 17:24:58,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188.
[2022-01-31 17:24:58,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 182 states have (on average 1.054945054945055) internal successors, (192), 182 states have internal predecessors, (192), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:24:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 197 transitions.
[2022-01-31 17:24:58,635 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 197 transitions. Word has length 181
[2022-01-31 17:24:58,635 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:24:58,635 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 197 transitions.
[2022-01-31 17:24:58,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.515625) internal successors, (161), 63 states have internal predecessors, (161), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:24:58,635 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 197 transitions.
[2022-01-31 17:24:58,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184
[2022-01-31 17:24:58,636 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:24:58,636 INFO L514 BasicCegarLoop]: trace histogram [61, 61, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:24:58,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63
[2022-01-31 17:24:58,636 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:24:58,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:24:58,636 INFO L85 PathProgramCache]: Analyzing trace with hash 712871013, now seen corresponding path program 61 times
[2022-01-31 17:24:58,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:24:58,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748602525]
[2022-01-31 17:24:58,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:24:58,638 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:24:58,638 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:24:58,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:24:58,647 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:24:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:00,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:00,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:00,009 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:00,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748602525]
[2022-01-31 17:25:00,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1748602525] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:00,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:00,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65
[2022-01-31 17:25:00,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398087440]
[2022-01-31 17:25:00,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:00,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states
[2022-01-31 17:25:00,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:00,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants.
[2022-01-31 17:25:00,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160
[2022-01-31 17:25:00,011 INFO L87 Difference]: Start difference. First operand 188 states and 197 transitions. Second operand has 65 states, 65 states have (on average 2.5076923076923077) internal successors, (163), 64 states have internal predecessors, (163), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:01,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:01,717 INFO L93 Difference]: Finished difference Result 250 states and 268 transitions.
[2022-01-31 17:25:01,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states.
[2022-01-31 17:25:01,717 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.5076923076923077) internal successors, (163), 64 states have internal predecessors, (163), 2 states have call successors, (3), 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 183
[2022-01-31 17:25:01,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:01,718 INFO L225 Difference]: With dead ends: 250
[2022-01-31 17:25:01,718 INFO L226 Difference]: Without dead ends: 191
[2022-01-31 17:25:01,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1952 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=6048, Invalid=9954, Unknown=0, NotChecked=0, Total=16002
[2022-01-31 17:25:01,719 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 169 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:01,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 71 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:01,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states.
[2022-01-31 17:25:01,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190.
[2022-01-31 17:25:01,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 184 states have (on average 1.0543478260869565) internal successors, (194), 184 states have internal predecessors, (194), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:25:01,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 199 transitions.
[2022-01-31 17:25:01,747 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 199 transitions. Word has length 183
[2022-01-31 17:25:01,747 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:01,747 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 199 transitions.
[2022-01-31 17:25:01,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.5076923076923077) internal successors, (163), 64 states have internal predecessors, (163), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:01,747 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 199 transitions.
[2022-01-31 17:25:01,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186
[2022-01-31 17:25:01,748 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:01,748 INFO L514 BasicCegarLoop]: trace histogram [62, 62, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:01,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64
[2022-01-31 17:25:01,749 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:01,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:01,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1165835779, now seen corresponding path program 62 times
[2022-01-31 17:25:01,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:01,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463679935]
[2022-01-31 17:25:01,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:01,751 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:01,751 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:01,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:01,760 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:03,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:03,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:03,232 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:03,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463679935]
[2022-01-31 17:25:03,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [463679935] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:03,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:03,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66
[2022-01-31 17:25:03,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575053938]
[2022-01-31 17:25:03,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:03,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states
[2022-01-31 17:25:03,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:03,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants.
[2022-01-31 17:25:03,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290
[2022-01-31 17:25:03,234 INFO L87 Difference]: Start difference. First operand 190 states and 199 transitions. Second operand has 66 states, 66 states have (on average 2.5) internal successors, (165), 65 states have internal predecessors, (165), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:04,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:04,960 INFO L93 Difference]: Finished difference Result 252 states and 270 transitions.
[2022-01-31 17:25:04,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states.
[2022-01-31 17:25:04,961 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.5) internal successors, (165), 65 states have internal predecessors, (165), 2 states have call successors, (3), 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 185
[2022-01-31 17:25:04,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:04,962 INFO L225 Difference]: With dead ends: 252
[2022-01-31 17:25:04,962 INFO L226 Difference]: Without dead ends: 193
[2022-01-31 17:25:04,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=6240, Invalid=10272, Unknown=0, NotChecked=0, Total=16512
[2022-01-31 17:25:04,963 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 171 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:04,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 66 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:04,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states.
[2022-01-31 17:25:05,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 192.
[2022-01-31 17:25:05,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 186 states have (on average 1.053763440860215) internal successors, (196), 186 states have internal predecessors, (196), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:25:05,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 201 transitions.
[2022-01-31 17:25:05,004 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 201 transitions. Word has length 185
[2022-01-31 17:25:05,004 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:05,004 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 201 transitions.
[2022-01-31 17:25:05,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.5) internal successors, (165), 65 states have internal predecessors, (165), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:05,005 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 201 transitions.
[2022-01-31 17:25:05,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188
[2022-01-31 17:25:05,005 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:05,006 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:05,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65
[2022-01-31 17:25:05,006 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:05,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:05,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1621688287, now seen corresponding path program 63 times
[2022-01-31 17:25:05,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:05,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648755267]
[2022-01-31 17:25:05,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:05,008 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:05,008 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:05,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:05,019 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:06,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:06,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:06,475 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:06,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648755267]
[2022-01-31 17:25:06,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [648755267] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:06,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:06,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67
[2022-01-31 17:25:06,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392914639]
[2022-01-31 17:25:06,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:06,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states
[2022-01-31 17:25:06,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:06,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants.
[2022-01-31 17:25:06,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422
[2022-01-31 17:25:06,477 INFO L87 Difference]: Start difference. First operand 192 states and 201 transitions. Second operand has 67 states, 67 states have (on average 2.4925373134328357) internal successors, (167), 66 states have internal predecessors, (167), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:08,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:08,292 INFO L93 Difference]: Finished difference Result 254 states and 272 transitions.
[2022-01-31 17:25:08,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states.
[2022-01-31 17:25:08,292 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.4925373134328357) internal successors, (167), 66 states have internal predecessors, (167), 2 states have call successors, (3), 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 187
[2022-01-31 17:25:08,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:08,293 INFO L225 Difference]: With dead ends: 254
[2022-01-31 17:25:08,293 INFO L226 Difference]: Without dead ends: 195
[2022-01-31 17:25:08,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2079 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030
[2022-01-31 17:25:08,294 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 173 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:08,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 86 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:08,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states.
[2022-01-31 17:25:08,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194.
[2022-01-31 17:25:08,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 188 states have (on average 1.053191489361702) internal successors, (198), 188 states have internal predecessors, (198), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:25:08,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 203 transitions.
[2022-01-31 17:25:08,322 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 203 transitions. Word has length 187
[2022-01-31 17:25:08,322 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:08,322 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 203 transitions.
[2022-01-31 17:25:08,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.4925373134328357) internal successors, (167), 66 states have internal predecessors, (167), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:08,322 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 203 transitions.
[2022-01-31 17:25:08,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190
[2022-01-31 17:25:08,323 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:08,323 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:08,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66
[2022-01-31 17:25:08,323 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:08,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:08,323 INFO L85 PathProgramCache]: Analyzing trace with hash -372723009, now seen corresponding path program 64 times
[2022-01-31 17:25:08,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:08,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843402722]
[2022-01-31 17:25:08,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:08,326 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:08,326 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:08,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:08,337 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:09,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:09,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:09,861 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:09,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843402722]
[2022-01-31 17:25:09,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1843402722] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:09,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:09,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68
[2022-01-31 17:25:09,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663399808]
[2022-01-31 17:25:09,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:09,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states
[2022-01-31 17:25:09,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:09,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants.
[2022-01-31 17:25:09,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556
[2022-01-31 17:25:09,863 INFO L87 Difference]: Start difference. First operand 194 states and 203 transitions. Second operand has 68 states, 68 states have (on average 2.485294117647059) internal successors, (169), 67 states have internal predecessors, (169), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:11,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:11,688 INFO L93 Difference]: Finished difference Result 256 states and 274 transitions.
[2022-01-31 17:25:11,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states.
[2022-01-31 17:25:11,688 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.485294117647059) internal successors, (169), 67 states have internal predecessors, (169), 2 states have call successors, (3), 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 189
[2022-01-31 17:25:11,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:11,689 INFO L225 Difference]: With dead ends: 256
[2022-01-31 17:25:11,689 INFO L226 Difference]: Without dead ends: 197
[2022-01-31 17:25:11,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=6633, Invalid=10923, Unknown=0, NotChecked=0, Total=17556
[2022-01-31 17:25:11,691 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 175 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:11,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 66 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:11,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states.
[2022-01-31 17:25:11,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196.
[2022-01-31 17:25:11,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 190 states have (on average 1.0526315789473684) internal successors, (200), 190 states have internal predecessors, (200), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:25:11,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 205 transitions.
[2022-01-31 17:25:11,723 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 205 transitions. Word has length 189
[2022-01-31 17:25:11,723 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:11,723 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 205 transitions.
[2022-01-31 17:25:11,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.485294117647059) internal successors, (169), 67 states have internal predecessors, (169), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:11,723 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 205 transitions.
[2022-01-31 17:25:11,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192
[2022-01-31 17:25:11,724 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:11,724 INFO L514 BasicCegarLoop]: trace histogram [65, 65, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:11,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67
[2022-01-31 17:25:11,724 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:11,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:11,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1587033565, now seen corresponding path program 65 times
[2022-01-31 17:25:11,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:11,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174735542]
[2022-01-31 17:25:11,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:11,727 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:11,727 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:11,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:11,738 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:13,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:13,281 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:13,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174735542]
[2022-01-31 17:25:13,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1174735542] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:13,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:13,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69
[2022-01-31 17:25:13,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584519741]
[2022-01-31 17:25:13,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:13,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states
[2022-01-31 17:25:13,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:13,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants.
[2022-01-31 17:25:13,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692
[2022-01-31 17:25:13,283 INFO L87 Difference]: Start difference. First operand 196 states and 205 transitions. Second operand has 69 states, 69 states have (on average 2.4782608695652173) internal successors, (171), 68 states have internal predecessors, (171), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:15,186 INFO L93 Difference]: Finished difference Result 258 states and 276 transitions.
[2022-01-31 17:25:15,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states.
[2022-01-31 17:25:15,186 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.4782608695652173) internal successors, (171), 68 states have internal predecessors, (171), 2 states have call successors, (3), 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 191
[2022-01-31 17:25:15,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:15,187 INFO L225 Difference]: With dead ends: 258
[2022-01-31 17:25:15,187 INFO L226 Difference]: Without dead ends: 199
[2022-01-31 17:25:15,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=6834, Invalid=11256, Unknown=0, NotChecked=0, Total=18090
[2022-01-31 17:25:15,189 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 177 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:15,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 76 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:15,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states.
[2022-01-31 17:25:15,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198.
[2022-01-31 17:25:15,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 192 states have (on average 1.0520833333333333) internal successors, (202), 192 states have internal predecessors, (202), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:25:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 207 transitions.
[2022-01-31 17:25:15,222 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 207 transitions. Word has length 191
[2022-01-31 17:25:15,222 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:15,222 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 207 transitions.
[2022-01-31 17:25:15,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.4782608695652173) internal successors, (171), 68 states have internal predecessors, (171), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:15,222 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 207 transitions.
[2022-01-31 17:25:15,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194
[2022-01-31 17:25:15,223 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:15,223 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:15,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68
[2022-01-31 17:25:15,223 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:15,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:15,224 INFO L85 PathProgramCache]: Analyzing trace with hash -577541765, now seen corresponding path program 66 times
[2022-01-31 17:25:15,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:15,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565084486]
[2022-01-31 17:25:15,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:15,226 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:15,226 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:15,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:15,236 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:16,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:16,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:16,825 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:16,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565084486]
[2022-01-31 17:25:16,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1565084486] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:16,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:16,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70
[2022-01-31 17:25:16,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884461087]
[2022-01-31 17:25:16,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:16,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states
[2022-01-31 17:25:16,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:16,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants.
[2022-01-31 17:25:16,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830
[2022-01-31 17:25:16,829 INFO L87 Difference]: Start difference. First operand 198 states and 207 transitions. Second operand has 70 states, 70 states have (on average 2.4714285714285715) internal successors, (173), 69 states have internal predecessors, (173), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:18,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:18,789 INFO L93 Difference]: Finished difference Result 260 states and 278 transitions.
[2022-01-31 17:25:18,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states.
[2022-01-31 17:25:18,789 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.4714285714285715) internal successors, (173), 69 states have internal predecessors, (173), 2 states have call successors, (3), 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 193
[2022-01-31 17:25:18,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:18,790 INFO L225 Difference]: With dead ends: 260
[2022-01-31 17:25:18,790 INFO L226 Difference]: Without dead ends: 201
[2022-01-31 17:25:18,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=7038, Invalid=11594, Unknown=0, NotChecked=0, Total=18632
[2022-01-31 17:25:18,791 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 179 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:18,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 76 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:18,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states.
[2022-01-31 17:25:18,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200.
[2022-01-31 17:25:18,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 194 states have (on average 1.0515463917525774) internal successors, (204), 194 states have internal predecessors, (204), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:25:18,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 209 transitions.
[2022-01-31 17:25:18,836 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 209 transitions. Word has length 193
[2022-01-31 17:25:18,836 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:18,836 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 209 transitions.
[2022-01-31 17:25:18,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.4714285714285715) internal successors, (173), 69 states have internal predecessors, (173), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:18,836 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 209 transitions.
[2022-01-31 17:25:18,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196
[2022-01-31 17:25:18,837 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:18,837 INFO L514 BasicCegarLoop]: trace histogram [67, 67, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:18,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69
[2022-01-31 17:25:18,837 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:18,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:18,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1970262631, now seen corresponding path program 67 times
[2022-01-31 17:25:18,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:18,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603869550]
[2022-01-31 17:25:18,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:18,839 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:18,839 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:18,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:18,849 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:20,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:20,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:20,474 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:20,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603869550]
[2022-01-31 17:25:20,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [603869550] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:20,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:20,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71
[2022-01-31 17:25:20,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471247447]
[2022-01-31 17:25:20,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:20,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states
[2022-01-31 17:25:20,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:20,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants.
[2022-01-31 17:25:20,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970
[2022-01-31 17:25:20,475 INFO L87 Difference]: Start difference. First operand 200 states and 209 transitions. Second operand has 71 states, 71 states have (on average 2.464788732394366) internal successors, (175), 70 states have internal predecessors, (175), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:22,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:22,466 INFO L93 Difference]: Finished difference Result 262 states and 280 transitions.
[2022-01-31 17:25:22,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states.
[2022-01-31 17:25:22,467 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.464788732394366) internal successors, (175), 70 states have internal predecessors, (175), 2 states have call successors, (3), 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 195
[2022-01-31 17:25:22,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:22,467 INFO L225 Difference]: With dead ends: 262
[2022-01-31 17:25:22,468 INFO L226 Difference]: Without dead ends: 203
[2022-01-31 17:25:22,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182
[2022-01-31 17:25:22,470 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 181 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:22,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 76 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:22,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states.
[2022-01-31 17:25:22,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202.
[2022-01-31 17:25:22,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 196 states have (on average 1.0510204081632653) internal successors, (206), 196 states have internal predecessors, (206), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:25:22,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 211 transitions.
[2022-01-31 17:25:22,540 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 211 transitions. Word has length 195
[2022-01-31 17:25:22,541 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:22,541 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 211 transitions.
[2022-01-31 17:25:22,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.464788732394366) internal successors, (175), 70 states have internal predecessors, (175), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:22,541 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 211 transitions.
[2022-01-31 17:25:22,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198
[2022-01-31 17:25:22,542 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:22,542 INFO L514 BasicCegarLoop]: trace histogram [68, 68, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:22,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70
[2022-01-31 17:25:22,542 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:22,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:22,542 INFO L85 PathProgramCache]: Analyzing trace with hash -345218505, now seen corresponding path program 68 times
[2022-01-31 17:25:22,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:22,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563042067]
[2022-01-31 17:25:22,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:22,544 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:22,544 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:22,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:22,558 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:24,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:24,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:24,218 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:24,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563042067]
[2022-01-31 17:25:24,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [563042067] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:24,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:24,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72
[2022-01-31 17:25:24,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95087714]
[2022-01-31 17:25:24,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:24,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states
[2022-01-31 17:25:24,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:24,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants.
[2022-01-31 17:25:24,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112
[2022-01-31 17:25:24,220 INFO L87 Difference]: Start difference. First operand 202 states and 211 transitions. Second operand has 72 states, 72 states have (on average 2.4583333333333335) internal successors, (177), 71 states have internal predecessors, (177), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:26,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:26,236 INFO L93 Difference]: Finished difference Result 264 states and 282 transitions.
[2022-01-31 17:25:26,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states.
[2022-01-31 17:25:26,237 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.4583333333333335) internal successors, (177), 71 states have internal predecessors, (177), 2 states have call successors, (3), 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 197
[2022-01-31 17:25:26,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:26,238 INFO L225 Difference]: With dead ends: 264
[2022-01-31 17:25:26,238 INFO L226 Difference]: Without dead ends: 205
[2022-01-31 17:25:26,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=7455, Invalid=12285, Unknown=0, NotChecked=0, Total=19740
[2022-01-31 17:25:26,240 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 183 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:26,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 66 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:26,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states.
[2022-01-31 17:25:26,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204.
[2022-01-31 17:25:26,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 198 states have (on average 1.0505050505050506) internal successors, (208), 198 states have internal predecessors, (208), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:25:26,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 213 transitions.
[2022-01-31 17:25:26,283 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 213 transitions. Word has length 197
[2022-01-31 17:25:26,283 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:26,283 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 213 transitions.
[2022-01-31 17:25:26,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.4583333333333335) internal successors, (177), 71 states have internal predecessors, (177), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:26,283 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 213 transitions.
[2022-01-31 17:25:26,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200
[2022-01-31 17:25:26,284 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:26,284 INFO L514 BasicCegarLoop]: trace histogram [69, 69, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:26,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71
[2022-01-31 17:25:26,284 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:26,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:26,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2045909163, now seen corresponding path program 69 times
[2022-01-31 17:25:26,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:26,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303172378]
[2022-01-31 17:25:26,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:26,286 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:26,286 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:26,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:26,300 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:28,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:28,008 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:28,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303172378]
[2022-01-31 17:25:28,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [303172378] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:28,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:28,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73
[2022-01-31 17:25:28,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316241108]
[2022-01-31 17:25:28,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:28,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states
[2022-01-31 17:25:28,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:28,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants.
[2022-01-31 17:25:28,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256
[2022-01-31 17:25:28,010 INFO L87 Difference]: Start difference. First operand 204 states and 213 transitions. Second operand has 73 states, 73 states have (on average 2.452054794520548) internal successors, (179), 72 states have internal predecessors, (179), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:30,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:30,085 INFO L93 Difference]: Finished difference Result 266 states and 284 transitions.
[2022-01-31 17:25:30,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states.
[2022-01-31 17:25:30,086 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.452054794520548) internal successors, (179), 72 states have internal predecessors, (179), 2 states have call successors, (3), 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 199
[2022-01-31 17:25:30,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:30,086 INFO L225 Difference]: With dead ends: 266
[2022-01-31 17:25:30,086 INFO L226 Difference]: Without dead ends: 207
[2022-01-31 17:25:30,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2484 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=7668, Invalid=12638, Unknown=0, NotChecked=0, Total=20306
[2022-01-31 17:25:30,087 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 185 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:30,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 61 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:30,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states.
[2022-01-31 17:25:30,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206.
[2022-01-31 17:25:30,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 200 states have (on average 1.05) internal successors, (210), 200 states have internal predecessors, (210), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:25:30,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 215 transitions.
[2022-01-31 17:25:30,120 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 215 transitions. Word has length 199
[2022-01-31 17:25:30,120 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:30,120 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 215 transitions.
[2022-01-31 17:25:30,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.452054794520548) internal successors, (179), 72 states have internal predecessors, (179), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:30,121 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 215 transitions.
[2022-01-31 17:25:30,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202
[2022-01-31 17:25:30,122 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:30,122 INFO L514 BasicCegarLoop]: trace histogram [70, 70, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:30,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72
[2022-01-31 17:25:30,122 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:30,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:30,122 INFO L85 PathProgramCache]: Analyzing trace with hash -27091725, now seen corresponding path program 70 times
[2022-01-31 17:25:30,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:30,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65480514]
[2022-01-31 17:25:30,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:30,124 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:30,125 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:30,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:30,140 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:32,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:32,113 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:32,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65480514]
[2022-01-31 17:25:32,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [65480514] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:32,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:32,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74
[2022-01-31 17:25:32,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701219619]
[2022-01-31 17:25:32,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:32,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states
[2022-01-31 17:25:32,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:32,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants.
[2022-01-31 17:25:32,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402
[2022-01-31 17:25:32,114 INFO L87 Difference]: Start difference. First operand 206 states and 215 transitions. Second operand has 74 states, 74 states have (on average 2.445945945945946) internal successors, (181), 73 states have internal predecessors, (181), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:34,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:34,266 INFO L93 Difference]: Finished difference Result 268 states and 286 transitions.
[2022-01-31 17:25:34,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states.
[2022-01-31 17:25:34,267 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.445945945945946) internal successors, (181), 73 states have internal predecessors, (181), 2 states have call successors, (3), 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 201
[2022-01-31 17:25:34,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:34,268 INFO L225 Difference]: With dead ends: 268
[2022-01-31 17:25:34,268 INFO L226 Difference]: Without dead ends: 209
[2022-01-31 17:25:34,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2555 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=7884, Invalid=12996, Unknown=0, NotChecked=0, Total=20880
[2022-01-31 17:25:34,269 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 187 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:34,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 66 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:34,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states.
[2022-01-31 17:25:34,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208.
[2022-01-31 17:25:34,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 202 states have (on average 1.0495049504950495) internal successors, (212), 202 states have internal predecessors, (212), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:25:34,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 217 transitions.
[2022-01-31 17:25:34,321 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 217 transitions. Word has length 201
[2022-01-31 17:25:34,321 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:34,321 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 217 transitions.
[2022-01-31 17:25:34,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.445945945945946) internal successors, (181), 73 states have internal predecessors, (181), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:34,321 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 217 transitions.
[2022-01-31 17:25:34,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204
[2022-01-31 17:25:34,322 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:34,322 INFO L514 BasicCegarLoop]: trace histogram [71, 71, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:34,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73
[2022-01-31 17:25:34,322 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:34,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:34,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1268751599, now seen corresponding path program 71 times
[2022-01-31 17:25:34,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:34,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25545075]
[2022-01-31 17:25:34,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:34,324 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:34,324 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:34,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:34,338 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:36,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:36,122 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:36,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25545075]
[2022-01-31 17:25:36,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [25545075] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:36,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:36,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75
[2022-01-31 17:25:36,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105415788]
[2022-01-31 17:25:36,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:36,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states
[2022-01-31 17:25:36,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:36,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants.
[2022-01-31 17:25:36,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550
[2022-01-31 17:25:36,124 INFO L87 Difference]: Start difference. First operand 208 states and 217 transitions. Second operand has 75 states, 75 states have (on average 2.44) internal successors, (183), 74 states have internal predecessors, (183), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:38,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:38,339 INFO L93 Difference]: Finished difference Result 270 states and 288 transitions.
[2022-01-31 17:25:38,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states.
[2022-01-31 17:25:38,339 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.44) internal successors, (183), 74 states have internal predecessors, (183), 2 states have call successors, (3), 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 203
[2022-01-31 17:25:38,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:38,340 INFO L225 Difference]: With dead ends: 270
[2022-01-31 17:25:38,340 INFO L226 Difference]: Without dead ends: 211
[2022-01-31 17:25:38,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2627 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462
[2022-01-31 17:25:38,341 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 189 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:38,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 81 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:38,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states.
[2022-01-31 17:25:38,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 210.
[2022-01-31 17:25:38,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 204 states have (on average 1.0490196078431373) internal successors, (214), 204 states have internal predecessors, (214), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:25:38,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 219 transitions.
[2022-01-31 17:25:38,375 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 219 transitions. Word has length 203
[2022-01-31 17:25:38,375 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:38,375 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 219 transitions.
[2022-01-31 17:25:38,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.44) internal successors, (183), 74 states have internal predecessors, (183), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:38,375 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 219 transitions.
[2022-01-31 17:25:38,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206
[2022-01-31 17:25:38,375 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:38,376 INFO L514 BasicCegarLoop]: trace histogram [72, 72, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:38,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74
[2022-01-31 17:25:38,376 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:38,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:38,376 INFO L85 PathProgramCache]: Analyzing trace with hash -502982225, now seen corresponding path program 72 times
[2022-01-31 17:25:38,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:38,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051011634]
[2022-01-31 17:25:38,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:38,378 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:38,378 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:38,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:38,390 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:40,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:40,223 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:40,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051011634]
[2022-01-31 17:25:40,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2051011634] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:40,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:40,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76
[2022-01-31 17:25:40,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467469210]
[2022-01-31 17:25:40,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:40,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states
[2022-01-31 17:25:40,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:40,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants.
[2022-01-31 17:25:40,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700
[2022-01-31 17:25:40,225 INFO L87 Difference]: Start difference. First operand 210 states and 219 transitions. Second operand has 76 states, 76 states have (on average 2.4342105263157894) internal successors, (185), 75 states have internal predecessors, (185), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:42,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:42,460 INFO L93 Difference]: Finished difference Result 272 states and 290 transitions.
[2022-01-31 17:25:42,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states.
[2022-01-31 17:25:42,461 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.4342105263157894) internal successors, (185), 75 states have internal predecessors, (185), 2 states have call successors, (3), 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 205
[2022-01-31 17:25:42,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:42,461 INFO L225 Difference]: With dead ends: 272
[2022-01-31 17:25:42,462 INFO L226 Difference]: Without dead ends: 213
[2022-01-31 17:25:42,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=8325, Invalid=13727, Unknown=0, NotChecked=0, Total=22052
[2022-01-31 17:25:42,463 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 191 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:42,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 66 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:42,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states.
[2022-01-31 17:25:42,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 212.
[2022-01-31 17:25:42,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 206 states have (on average 1.0485436893203883) internal successors, (216), 206 states have internal predecessors, (216), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:25:42,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 221 transitions.
[2022-01-31 17:25:42,515 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 221 transitions. Word has length 205
[2022-01-31 17:25:42,516 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:42,516 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 221 transitions.
[2022-01-31 17:25:42,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.4342105263157894) internal successors, (185), 75 states have internal predecessors, (185), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:42,516 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 221 transitions.
[2022-01-31 17:25:42,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208
[2022-01-31 17:25:42,517 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:42,517 INFO L514 BasicCegarLoop]: trace histogram [73, 73, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:42,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75
[2022-01-31 17:25:42,517 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:42,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:42,517 INFO L85 PathProgramCache]: Analyzing trace with hash 961978573, now seen corresponding path program 73 times
[2022-01-31 17:25:42,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:42,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926147647]
[2022-01-31 17:25:42,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:42,519 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:42,519 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:42,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:42,534 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:44,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:44,497 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:44,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926147647]
[2022-01-31 17:25:44,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [926147647] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:44,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:44,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77
[2022-01-31 17:25:44,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510858431]
[2022-01-31 17:25:44,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:44,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states
[2022-01-31 17:25:44,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:44,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants.
[2022-01-31 17:25:44,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852
[2022-01-31 17:25:44,499 INFO L87 Difference]: Start difference. First operand 212 states and 221 transitions. Second operand has 77 states, 77 states have (on average 2.4285714285714284) internal successors, (187), 76 states have internal predecessors, (187), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:46,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:46,799 INFO L93 Difference]: Finished difference Result 274 states and 292 transitions.
[2022-01-31 17:25:46,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states.
[2022-01-31 17:25:46,799 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.4285714285714284) internal successors, (187), 76 states have internal predecessors, (187), 2 states have call successors, (3), 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 207
[2022-01-31 17:25:46,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:46,800 INFO L225 Difference]: With dead ends: 274
[2022-01-31 17:25:46,800 INFO L226 Difference]: Without dead ends: 215
[2022-01-31 17:25:46,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2774 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=8550, Invalid=14100, Unknown=0, NotChecked=0, Total=22650
[2022-01-31 17:25:46,802 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 193 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:46,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 71 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:46,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states.
[2022-01-31 17:25:46,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214.
[2022-01-31 17:25:46,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 208 states have (on average 1.0480769230769231) internal successors, (218), 208 states have internal predecessors, (218), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:25:46,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 223 transitions.
[2022-01-31 17:25:46,879 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 223 transitions. Word has length 207
[2022-01-31 17:25:46,879 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:46,879 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 223 transitions.
[2022-01-31 17:25:46,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.4285714285714284) internal successors, (187), 76 states have internal predecessors, (187), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:46,879 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 223 transitions.
[2022-01-31 17:25:46,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210
[2022-01-31 17:25:46,880 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:46,880 INFO L514 BasicCegarLoop]: trace histogram [74, 74, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:46,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76
[2022-01-31 17:25:46,880 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:46,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:46,881 INFO L85 PathProgramCache]: Analyzing trace with hash 40032363, now seen corresponding path program 74 times
[2022-01-31 17:25:46,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:46,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921840700]
[2022-01-31 17:25:46,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:46,883 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:46,883 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:46,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:46,895 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:48,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:48,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:48,810 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:48,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921840700]
[2022-01-31 17:25:48,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [921840700] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:48,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:48,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78
[2022-01-31 17:25:48,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92405247]
[2022-01-31 17:25:48,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:48,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states
[2022-01-31 17:25:48,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:48,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants.
[2022-01-31 17:25:48,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006
[2022-01-31 17:25:48,812 INFO L87 Difference]: Start difference. First operand 214 states and 223 transitions. Second operand has 78 states, 78 states have (on average 2.423076923076923) internal successors, (189), 77 states have internal predecessors, (189), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:51,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:51,201 INFO L93 Difference]: Finished difference Result 276 states and 294 transitions.
[2022-01-31 17:25:51,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states.
[2022-01-31 17:25:51,201 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.423076923076923) internal successors, (189), 77 states have internal predecessors, (189), 2 states have call successors, (3), 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 209
[2022-01-31 17:25:51,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:51,202 INFO L225 Difference]: With dead ends: 276
[2022-01-31 17:25:51,202 INFO L226 Difference]: Without dead ends: 217
[2022-01-31 17:25:51,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2849 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=8778, Invalid=14478, Unknown=0, NotChecked=0, Total=23256
[2022-01-31 17:25:51,203 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 195 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:51,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 71 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:25:51,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states.
[2022-01-31 17:25:51,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 216.
[2022-01-31 17:25:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 210 states have (on average 1.0476190476190477) internal successors, (220), 210 states have internal predecessors, (220), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:25:51,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 225 transitions.
[2022-01-31 17:25:51,240 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 225 transitions. Word has length 209
[2022-01-31 17:25:51,240 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:51,240 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 225 transitions.
[2022-01-31 17:25:51,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.423076923076923) internal successors, (189), 77 states have internal predecessors, (189), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:51,240 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 225 transitions.
[2022-01-31 17:25:51,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212
[2022-01-31 17:25:51,241 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:51,241 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:51,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77
[2022-01-31 17:25:51,241 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:51,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:51,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1187012471, now seen corresponding path program 75 times
[2022-01-31 17:25:51,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:51,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515062263]
[2022-01-31 17:25:51,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:51,243 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:51,243 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:51,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:51,258 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:53,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:53,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:53,235 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:53,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515062263]
[2022-01-31 17:25:53,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1515062263] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:53,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:53,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79
[2022-01-31 17:25:53,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669980229]
[2022-01-31 17:25:53,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:53,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states
[2022-01-31 17:25:53,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:53,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants.
[2022-01-31 17:25:53,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162
[2022-01-31 17:25:53,237 INFO L87 Difference]: Start difference. First operand 216 states and 225 transitions. Second operand has 79 states, 79 states have (on average 2.4177215189873418) internal successors, (191), 78 states have internal predecessors, (191), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:55,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:25:55,728 INFO L93 Difference]: Finished difference Result 278 states and 296 transitions.
[2022-01-31 17:25:55,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states.
[2022-01-31 17:25:55,728 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.4177215189873418) internal successors, (191), 78 states have internal predecessors, (191), 2 states have call successors, (3), 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 211
[2022-01-31 17:25:55,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:25:55,729 INFO L225 Difference]: With dead ends: 278
[2022-01-31 17:25:55,729 INFO L226 Difference]: Without dead ends: 219
[2022-01-31 17:25:55,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2925 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870
[2022-01-31 17:25:55,730 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 197 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:25:55,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 96 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:25:55,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states.
[2022-01-31 17:25:55,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 218.
[2022-01-31 17:25:55,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 212 states have (on average 1.0471698113207548) internal successors, (222), 212 states have internal predecessors, (222), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:25:55,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 227 transitions.
[2022-01-31 17:25:55,767 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 227 transitions. Word has length 211
[2022-01-31 17:25:55,767 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:25:55,768 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 227 transitions.
[2022-01-31 17:25:55,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.4177215189873418) internal successors, (191), 78 states have internal predecessors, (191), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:25:55,768 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 227 transitions.
[2022-01-31 17:25:55,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214
[2022-01-31 17:25:55,768 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:25:55,768 INFO L514 BasicCegarLoop]: trace histogram [76, 76, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:25:55,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78
[2022-01-31 17:25:55,769 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:25:55,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:25:55,769 INFO L85 PathProgramCache]: Analyzing trace with hash 738908455, now seen corresponding path program 76 times
[2022-01-31 17:25:55,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:25:55,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767427971]
[2022-01-31 17:25:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:25:55,770 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:25:55,770 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:25:55,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:25:55,782 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:25:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:57,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:25:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:25:57,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:25:57,803 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:25:57,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767427971]
[2022-01-31 17:25:57,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1767427971] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:25:57,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:25:57,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80
[2022-01-31 17:25:57,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607584340]
[2022-01-31 17:25:57,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:25:57,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states
[2022-01-31 17:25:57,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:25:57,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants.
[2022-01-31 17:25:57,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320
[2022-01-31 17:25:57,805 INFO L87 Difference]: Start difference. First operand 218 states and 227 transitions. Second operand has 80 states, 80 states have (on average 2.4125) internal successors, (193), 79 states have internal predecessors, (193), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:00,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:00,497 INFO L93 Difference]: Finished difference Result 280 states and 298 transitions.
[2022-01-31 17:26:00,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states.
[2022-01-31 17:26:00,497 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.4125) internal successors, (193), 79 states have internal predecessors, (193), 2 states have call successors, (3), 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 213
[2022-01-31 17:26:00,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:00,498 INFO L225 Difference]: With dead ends: 280
[2022-01-31 17:26:00,498 INFO L226 Difference]: Without dead ends: 221
[2022-01-31 17:26:00,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3002 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=9243, Invalid=15249, Unknown=0, NotChecked=0, Total=24492
[2022-01-31 17:26:00,500 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 199 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:00,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 71 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:26:00,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states.
[2022-01-31 17:26:00,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220.
[2022-01-31 17:26:00,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 214 states have (on average 1.0467289719626167) internal successors, (224), 214 states have internal predecessors, (224), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:00,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 229 transitions.
[2022-01-31 17:26:00,543 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 229 transitions. Word has length 213
[2022-01-31 17:26:00,543 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:00,543 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 229 transitions.
[2022-01-31 17:26:00,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.4125) internal successors, (193), 79 states have internal predecessors, (193), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:00,543 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 229 transitions.
[2022-01-31 17:26:00,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216
[2022-01-31 17:26:00,544 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:00,544 INFO L514 BasicCegarLoop]: trace histogram [77, 77, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:00,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79
[2022-01-31 17:26:00,544 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:00,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:00,544 INFO L85 PathProgramCache]: Analyzing trace with hash 418013765, now seen corresponding path program 77 times
[2022-01-31 17:26:00,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:00,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931574101]
[2022-01-31 17:26:00,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:00,546 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:00,546 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:00,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:00,564 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:02,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:02,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:02,632 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:02,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931574101]
[2022-01-31 17:26:02,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [931574101] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:02,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:02,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81
[2022-01-31 17:26:02,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376861525]
[2022-01-31 17:26:02,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:02,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states
[2022-01-31 17:26:02,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:02,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants.
[2022-01-31 17:26:02,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480
[2022-01-31 17:26:02,634 INFO L87 Difference]: Start difference. First operand 220 states and 229 transitions. Second operand has 81 states, 81 states have (on average 2.4074074074074074) internal successors, (195), 80 states have internal predecessors, (195), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:05,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:05,243 INFO L93 Difference]: Finished difference Result 282 states and 300 transitions.
[2022-01-31 17:26:05,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states.
[2022-01-31 17:26:05,244 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.4074074074074074) internal successors, (195), 80 states have internal predecessors, (195), 2 states have call successors, (3), 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 215
[2022-01-31 17:26:05,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:05,244 INFO L225 Difference]: With dead ends: 282
[2022-01-31 17:26:05,244 INFO L226 Difference]: Without dead ends: 223
[2022-01-31 17:26:05,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=9480, Invalid=15642, Unknown=0, NotChecked=0, Total=25122
[2022-01-31 17:26:05,247 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 201 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:05,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 86 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:26:05,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states.
[2022-01-31 17:26:05,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222.
[2022-01-31 17:26:05,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 216 states have (on average 1.0462962962962963) internal successors, (226), 216 states have internal predecessors, (226), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:05,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 231 transitions.
[2022-01-31 17:26:05,326 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 231 transitions. Word has length 215
[2022-01-31 17:26:05,326 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:05,326 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 231 transitions.
[2022-01-31 17:26:05,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.4074074074074074) internal successors, (195), 80 states have internal predecessors, (195), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:05,326 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 231 transitions.
[2022-01-31 17:26:05,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218
[2022-01-31 17:26:05,327 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:05,327 INFO L514 BasicCegarLoop]: trace histogram [78, 78, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:05,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80
[2022-01-31 17:26:05,327 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:05,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:05,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1275861987, now seen corresponding path program 78 times
[2022-01-31 17:26:05,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:05,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431957198]
[2022-01-31 17:26:05,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:05,329 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:05,329 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:05,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:05,351 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:07,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:07,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:07,536 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:07,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431957198]
[2022-01-31 17:26:07,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [431957198] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:07,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:07,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82
[2022-01-31 17:26:07,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034131011]
[2022-01-31 17:26:07,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:07,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states
[2022-01-31 17:26:07,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:07,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants.
[2022-01-31 17:26:07,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642
[2022-01-31 17:26:07,538 INFO L87 Difference]: Start difference. First operand 222 states and 231 transitions. Second operand has 82 states, 82 states have (on average 2.402439024390244) internal successors, (197), 81 states have internal predecessors, (197), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:10,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:10,220 INFO L93 Difference]: Finished difference Result 284 states and 302 transitions.
[2022-01-31 17:26:10,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states.
[2022-01-31 17:26:10,221 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.402439024390244) internal successors, (197), 81 states have internal predecessors, (197), 2 states have call successors, (3), 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 217
[2022-01-31 17:26:10,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:10,221 INFO L225 Difference]: With dead ends: 284
[2022-01-31 17:26:10,221 INFO L226 Difference]: Without dead ends: 225
[2022-01-31 17:26:10,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3159 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=9720, Invalid=16040, Unknown=0, NotChecked=0, Total=25760
[2022-01-31 17:26:10,224 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 203 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:10,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 86 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:26:10,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states.
[2022-01-31 17:26:10,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 224.
[2022-01-31 17:26:10,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 218 states have (on average 1.0458715596330275) internal successors, (228), 218 states have internal predecessors, (228), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 233 transitions.
[2022-01-31 17:26:10,276 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 233 transitions. Word has length 217
[2022-01-31 17:26:10,276 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:10,276 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 233 transitions.
[2022-01-31 17:26:10,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.402439024390244) internal successors, (197), 81 states have internal predecessors, (197), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 233 transitions.
[2022-01-31 17:26:10,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220
[2022-01-31 17:26:10,277 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:10,277 INFO L514 BasicCegarLoop]: trace histogram [79, 79, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:10,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81
[2022-01-31 17:26:10,277 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:10,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:10,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1034282497, now seen corresponding path program 79 times
[2022-01-31 17:26:10,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:10,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796625823]
[2022-01-31 17:26:10,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:10,279 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:10,279 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:10,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:10,294 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:12,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:12,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:12,479 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:12,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796625823]
[2022-01-31 17:26:12,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1796625823] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:12,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:12,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83
[2022-01-31 17:26:12,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656517059]
[2022-01-31 17:26:12,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:12,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states
[2022-01-31 17:26:12,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:12,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants.
[2022-01-31 17:26:12,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806
[2022-01-31 17:26:12,482 INFO L87 Difference]: Start difference. First operand 224 states and 233 transitions. Second operand has 83 states, 83 states have (on average 2.397590361445783) internal successors, (199), 82 states have internal predecessors, (199), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:15,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:15,233 INFO L93 Difference]: Finished difference Result 286 states and 304 transitions.
[2022-01-31 17:26:15,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states.
[2022-01-31 17:26:15,234 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.397590361445783) internal successors, (199), 82 states have internal predecessors, (199), 2 states have call successors, (3), 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 219
[2022-01-31 17:26:15,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:15,235 INFO L225 Difference]: With dead ends: 286
[2022-01-31 17:26:15,235 INFO L226 Difference]: Without dead ends: 227
[2022-01-31 17:26:15,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3239 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406
[2022-01-31 17:26:15,236 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 205 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:15,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 86 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:26:15,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states.
[2022-01-31 17:26:15,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 226.
[2022-01-31 17:26:15,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 220 states have (on average 1.0454545454545454) internal successors, (230), 220 states have internal predecessors, (230), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:15,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 235 transitions.
[2022-01-31 17:26:15,277 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 235 transitions. Word has length 219
[2022-01-31 17:26:15,277 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:15,277 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 235 transitions.
[2022-01-31 17:26:15,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.397590361445783) internal successors, (199), 82 states have internal predecessors, (199), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:15,277 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 235 transitions.
[2022-01-31 17:26:15,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222
[2022-01-31 17:26:15,278 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:15,278 INFO L514 BasicCegarLoop]: trace histogram [80, 80, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:15,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82
[2022-01-31 17:26:15,278 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:15,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:15,279 INFO L85 PathProgramCache]: Analyzing trace with hash 804626591, now seen corresponding path program 80 times
[2022-01-31 17:26:15,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:15,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865255460]
[2022-01-31 17:26:15,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:15,281 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:15,281 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:15,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:15,296 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:17,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:17,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:17,537 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:17,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865255460]
[2022-01-31 17:26:17,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [865255460] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:17,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:17,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84
[2022-01-31 17:26:17,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144060337]
[2022-01-31 17:26:17,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:17,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states
[2022-01-31 17:26:17,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:17,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants.
[2022-01-31 17:26:17,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972
[2022-01-31 17:26:17,539 INFO L87 Difference]: Start difference. First operand 226 states and 235 transitions. Second operand has 84 states, 84 states have (on average 2.392857142857143) internal successors, (201), 83 states have internal predecessors, (201), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:20,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:20,283 INFO L93 Difference]: Finished difference Result 288 states and 306 transitions.
[2022-01-31 17:26:20,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states.
[2022-01-31 17:26:20,283 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.392857142857143) internal successors, (201), 83 states have internal predecessors, (201), 2 states have call successors, (3), 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 221
[2022-01-31 17:26:20,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:20,284 INFO L225 Difference]: With dead ends: 288
[2022-01-31 17:26:20,284 INFO L226 Difference]: Without dead ends: 229
[2022-01-31 17:26:20,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3320 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=10209, Invalid=16851, Unknown=0, NotChecked=0, Total=27060
[2022-01-31 17:26:20,286 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 207 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:20,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 76 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:26:20,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states.
[2022-01-31 17:26:20,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 228.
[2022-01-31 17:26:20,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 222 states have (on average 1.045045045045045) internal successors, (232), 222 states have internal predecessors, (232), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:20,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 237 transitions.
[2022-01-31 17:26:20,326 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 237 transitions. Word has length 221
[2022-01-31 17:26:20,326 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:20,327 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 237 transitions.
[2022-01-31 17:26:20,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.392857142857143) internal successors, (201), 83 states have internal predecessors, (201), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:20,327 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 237 transitions.
[2022-01-31 17:26:20,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224
[2022-01-31 17:26:20,327 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:20,327 INFO L514 BasicCegarLoop]: trace histogram [81, 81, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:20,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83
[2022-01-31 17:26:20,328 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:20,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:20,328 INFO L85 PathProgramCache]: Analyzing trace with hash -851366979, now seen corresponding path program 81 times
[2022-01-31 17:26:20,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:20,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429345352]
[2022-01-31 17:26:20,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:20,330 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:20,330 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:20,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:20,344 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:22,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:22,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:22,616 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:22,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429345352]
[2022-01-31 17:26:22,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1429345352] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:22,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:22,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85
[2022-01-31 17:26:22,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116363903]
[2022-01-31 17:26:22,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:22,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states
[2022-01-31 17:26:22,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:22,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants.
[2022-01-31 17:26:22,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140
[2022-01-31 17:26:22,618 INFO L87 Difference]: Start difference. First operand 228 states and 237 transitions. Second operand has 85 states, 85 states have (on average 2.388235294117647) internal successors, (203), 84 states have internal predecessors, (203), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:25,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:25,402 INFO L93 Difference]: Finished difference Result 290 states and 308 transitions.
[2022-01-31 17:26:25,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states.
[2022-01-31 17:26:25,403 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.388235294117647) internal successors, (203), 84 states have internal predecessors, (203), 2 states have call successors, (3), 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 223
[2022-01-31 17:26:25,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:25,403 INFO L225 Difference]: With dead ends: 290
[2022-01-31 17:26:25,403 INFO L226 Difference]: Without dead ends: 231
[2022-01-31 17:26:25,405 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
[2022-01-31 17:26:25,405 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 209 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:25,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 66 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:26:25,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states.
[2022-01-31 17:26:25,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230.
[2022-01-31 17:26:25,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 224 states have (on average 1.0446428571428572) internal successors, (234), 224 states have internal predecessors, (234), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:25,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 239 transitions.
[2022-01-31 17:26:25,469 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 239 transitions. Word has length 223
[2022-01-31 17:26:25,469 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:25,469 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 239 transitions.
[2022-01-31 17:26:25,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.388235294117647) internal successors, (203), 84 states have internal predecessors, (203), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:25,469 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 239 transitions.
[2022-01-31 17:26:25,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226
[2022-01-31 17:26:25,470 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:25,470 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:25,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84
[2022-01-31 17:26:25,471 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:25,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:25,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1171679067, now seen corresponding path program 82 times
[2022-01-31 17:26:25,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:25,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114428795]
[2022-01-31 17:26:25,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:25,473 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:25,473 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:25,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:25,491 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:27,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:27,843 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:27,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114428795]
[2022-01-31 17:26:27,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2114428795] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:27,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:27,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86
[2022-01-31 17:26:27,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404488803]
[2022-01-31 17:26:27,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:27,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states
[2022-01-31 17:26:27,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:27,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants.
[2022-01-31 17:26:27,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310
[2022-01-31 17:26:27,847 INFO L87 Difference]: Start difference. First operand 230 states and 239 transitions. Second operand has 86 states, 86 states have (on average 2.383720930232558) internal successors, (205), 85 states have internal predecessors, (205), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:30,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:30,819 INFO L93 Difference]: Finished difference Result 292 states and 310 transitions.
[2022-01-31 17:26:30,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states.
[2022-01-31 17:26:30,820 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.383720930232558) internal successors, (205), 85 states have internal predecessors, (205), 2 states have call successors, (3), 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 225
[2022-01-31 17:26:30,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:30,820 INFO L225 Difference]: With dead ends: 292
[2022-01-31 17:26:30,820 INFO L226 Difference]: Without dead ends: 233
[2022-01-31 17:26:30,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=10710, Invalid=17682, Unknown=0, NotChecked=0, Total=28392
[2022-01-31 17:26:30,823 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 211 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:30,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 71 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:26:30,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states.
[2022-01-31 17:26:30,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 232.
[2022-01-31 17:26:30,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 226 states have (on average 1.0442477876106195) internal successors, (236), 226 states have internal predecessors, (236), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:30,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 241 transitions.
[2022-01-31 17:26:30,877 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 241 transitions. Word has length 225
[2022-01-31 17:26:30,877 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:30,877 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 241 transitions.
[2022-01-31 17:26:30,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.383720930232558) internal successors, (205), 85 states have internal predecessors, (205), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:30,877 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 241 transitions.
[2022-01-31 17:26:30,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228
[2022-01-31 17:26:30,878 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:30,878 INFO L514 BasicCegarLoop]: trace histogram [83, 83, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:30,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85
[2022-01-31 17:26:30,878 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:30,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:30,879 INFO L85 PathProgramCache]: Analyzing trace with hash -301255815, now seen corresponding path program 83 times
[2022-01-31 17:26:30,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:30,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908540235]
[2022-01-31 17:26:30,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:30,880 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:30,880 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:30,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:30,894 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:33,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:33,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:33,262 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:33,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908540235]
[2022-01-31 17:26:33,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1908540235] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:33,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:33,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87
[2022-01-31 17:26:33,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659001740]
[2022-01-31 17:26:33,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:33,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states
[2022-01-31 17:26:33,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:33,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants.
[2022-01-31 17:26:33,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482
[2022-01-31 17:26:33,264 INFO L87 Difference]: Start difference. First operand 232 states and 241 transitions. Second operand has 87 states, 87 states have (on average 2.3793103448275863) internal successors, (207), 86 states have internal predecessors, (207), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:36,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:36,225 INFO L93 Difference]: Finished difference Result 294 states and 312 transitions.
[2022-01-31 17:26:36,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states.
[2022-01-31 17:26:36,225 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.3793103448275863) internal successors, (207), 86 states have internal predecessors, (207), 2 states have call successors, (3), 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 227
[2022-01-31 17:26:36,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:36,226 INFO L225 Difference]: With dead ends: 294
[2022-01-31 17:26:36,226 INFO L226 Difference]: Without dead ends: 235
[2022-01-31 17:26:36,227 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
[2022-01-31 17:26:36,228 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 213 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:36,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 91 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:26:36,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states.
[2022-01-31 17:26:36,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 234.
[2022-01-31 17:26:36,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 228 states have (on average 1.043859649122807) internal successors, (238), 228 states have internal predecessors, (238), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:36,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 243 transitions.
[2022-01-31 17:26:36,274 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 243 transitions. Word has length 227
[2022-01-31 17:26:36,274 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:36,274 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 243 transitions.
[2022-01-31 17:26:36,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 2.3793103448275863) internal successors, (207), 86 states have internal predecessors, (207), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:36,274 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 243 transitions.
[2022-01-31 17:26:36,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230
[2022-01-31 17:26:36,275 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:36,275 INFO L514 BasicCegarLoop]: trace histogram [84, 84, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:36,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86
[2022-01-31 17:26:36,275 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:36,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:36,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1547530263, now seen corresponding path program 84 times
[2022-01-31 17:26:36,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:36,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249328658]
[2022-01-31 17:26:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:36,277 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:36,277 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:36,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:36,293 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:38,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:38,728 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:38,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249328658]
[2022-01-31 17:26:38,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1249328658] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:38,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:38,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88
[2022-01-31 17:26:38,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191313599]
[2022-01-31 17:26:38,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:38,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states
[2022-01-31 17:26:38,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:38,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants.
[2022-01-31 17:26:38,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656
[2022-01-31 17:26:38,730 INFO L87 Difference]: Start difference. First operand 234 states and 243 transitions. Second operand has 88 states, 88 states have (on average 2.375) internal successors, (209), 87 states have internal predecessors, (209), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:41,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:41,697 INFO L93 Difference]: Finished difference Result 296 states and 314 transitions.
[2022-01-31 17:26:41,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states.
[2022-01-31 17:26:41,698 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.375) internal successors, (209), 87 states have internal predecessors, (209), 2 states have call successors, (3), 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 229
[2022-01-31 17:26:41,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:41,699 INFO L225 Difference]: With dead ends: 296
[2022-01-31 17:26:41,699 INFO L226 Difference]: Without dead ends: 237
[2022-01-31 17:26:41,701 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
[2022-01-31 17:26:41,701 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 215 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:41,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 76 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:26:41,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states.
[2022-01-31 17:26:41,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 236.
[2022-01-31 17:26:41,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 230 states have (on average 1.0434782608695652) internal successors, (240), 230 states have internal predecessors, (240), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:41,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 245 transitions.
[2022-01-31 17:26:41,770 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 245 transitions. Word has length 229
[2022-01-31 17:26:41,770 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:41,770 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 245 transitions.
[2022-01-31 17:26:41,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.375) internal successors, (209), 87 states have internal predecessors, (209), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:41,771 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 245 transitions.
[2022-01-31 17:26:41,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232
[2022-01-31 17:26:41,771 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:41,772 INFO L514 BasicCegarLoop]: trace histogram [85, 85, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:41,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87
[2022-01-31 17:26:41,772 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:41,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:41,772 INFO L85 PathProgramCache]: Analyzing trace with hash 114490677, now seen corresponding path program 85 times
[2022-01-31 17:26:41,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:41,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558282671]
[2022-01-31 17:26:41,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:41,774 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:41,774 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:41,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:41,793 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:44,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:44,292 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:44,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558282671]
[2022-01-31 17:26:44,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1558282671] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:44,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:44,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89
[2022-01-31 17:26:44,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550157973]
[2022-01-31 17:26:44,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:44,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states
[2022-01-31 17:26:44,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:44,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants.
[2022-01-31 17:26:44,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832
[2022-01-31 17:26:44,294 INFO L87 Difference]: Start difference. First operand 236 states and 245 transitions. Second operand has 89 states, 89 states have (on average 2.3707865168539324) internal successors, (211), 88 states have internal predecessors, (211), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:47,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:47,316 INFO L93 Difference]: Finished difference Result 298 states and 316 transitions.
[2022-01-31 17:26:47,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states.
[2022-01-31 17:26:47,316 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.3707865168539324) internal successors, (211), 88 states have internal predecessors, (211), 2 states have call successors, (3), 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 231
[2022-01-31 17:26:47,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:47,317 INFO L225 Difference]: With dead ends: 298
[2022-01-31 17:26:47,317 INFO L226 Difference]: Without dead ends: 239
[2022-01-31 17:26:47,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3740 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=11484, Invalid=18966, Unknown=0, NotChecked=0, Total=30450
[2022-01-31 17:26:47,318 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 217 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:47,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 71 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:26:47,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states.
[2022-01-31 17:26:47,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238.
[2022-01-31 17:26:47,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 232 states have (on average 1.043103448275862) internal successors, (242), 232 states have internal predecessors, (242), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:47,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 247 transitions.
[2022-01-31 17:26:47,368 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 247 transitions. Word has length 231
[2022-01-31 17:26:47,368 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:47,368 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 247 transitions.
[2022-01-31 17:26:47,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.3707865168539324) internal successors, (211), 88 states have internal predecessors, (211), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:47,368 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 247 transitions.
[2022-01-31 17:26:47,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234
[2022-01-31 17:26:47,369 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:47,369 INFO L514 BasicCegarLoop]: trace histogram [86, 86, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:47,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88
[2022-01-31 17:26:47,369 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:47,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:47,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1647950547, now seen corresponding path program 86 times
[2022-01-31 17:26:47,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:47,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76792934]
[2022-01-31 17:26:47,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:47,371 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:47,371 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:47,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:47,385 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:49,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:49,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:49,914 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:49,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76792934]
[2022-01-31 17:26:49,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [76792934] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:49,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:49,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90
[2022-01-31 17:26:49,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303587743]
[2022-01-31 17:26:49,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:49,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states
[2022-01-31 17:26:49,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:49,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants.
[2022-01-31 17:26:49,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010
[2022-01-31 17:26:49,916 INFO L87 Difference]: Start difference. First operand 238 states and 247 transitions. Second operand has 90 states, 90 states have (on average 2.3666666666666667) internal successors, (213), 89 states have internal predecessors, (213), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:53,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:53,110 INFO L93 Difference]: Finished difference Result 300 states and 318 transitions.
[2022-01-31 17:26:53,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states.
[2022-01-31 17:26:53,110 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.3666666666666667) internal successors, (213), 89 states have internal predecessors, (213), 2 states have call successors, (3), 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 233
[2022-01-31 17:26:53,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:53,111 INFO L225 Difference]: With dead ends: 300
[2022-01-31 17:26:53,111 INFO L226 Difference]: Without dead ends: 241
[2022-01-31 17:26:53,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3827 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=11748, Invalid=19404, Unknown=0, NotChecked=0, Total=31152
[2022-01-31 17:26:53,114 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 219 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:53,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 96 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:26:53,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states.
[2022-01-31 17:26:53,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240.
[2022-01-31 17:26:53,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 234 states have (on average 1.0427350427350428) internal successors, (244), 234 states have internal predecessors, (244), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:53,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 249 transitions.
[2022-01-31 17:26:53,177 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 249 transitions. Word has length 233
[2022-01-31 17:26:53,178 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:53,178 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 249 transitions.
[2022-01-31 17:26:53,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.3666666666666667) internal successors, (213), 89 states have internal predecessors, (213), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:53,178 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 249 transitions.
[2022-01-31 17:26:53,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236
[2022-01-31 17:26:53,178 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:53,179 INFO L514 BasicCegarLoop]: trace histogram [87, 87, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:53,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89
[2022-01-31 17:26:53,179 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:53,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:53,179 INFO L85 PathProgramCache]: Analyzing trace with hash 2129103089, now seen corresponding path program 87 times
[2022-01-31 17:26:53,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:53,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073237644]
[2022-01-31 17:26:53,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:53,180 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:53,180 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:53,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:53,195 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:55,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:26:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:26:55,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:26:55,794 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:26:55,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073237644]
[2022-01-31 17:26:55,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1073237644] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:26:55,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:26:55,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91
[2022-01-31 17:26:55,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619807628]
[2022-01-31 17:26:55,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:26:55,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states
[2022-01-31 17:26:55,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:26:55,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants.
[2022-01-31 17:26:55,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190
[2022-01-31 17:26:55,796 INFO L87 Difference]: Start difference. First operand 240 states and 249 transitions. Second operand has 91 states, 91 states have (on average 2.3626373626373627) internal successors, (215), 90 states have internal predecessors, (215), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:59,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:26:59,039 INFO L93 Difference]: Finished difference Result 302 states and 320 transitions.
[2022-01-31 17:26:59,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states.
[2022-01-31 17:26:59,043 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.3626373626373627) internal successors, (215), 90 states have internal predecessors, (215), 2 states have call successors, (3), 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 235
[2022-01-31 17:26:59,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:26:59,044 INFO L225 Difference]: With dead ends: 302
[2022-01-31 17:26:59,044 INFO L226 Difference]: Without dead ends: 243
[2022-01-31 17:26:59,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3915 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862
[2022-01-31 17:26:59,045 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 221 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:26:59,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 76 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:26:59,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states.
[2022-01-31 17:26:59,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 242.
[2022-01-31 17:26:59,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 236 states have (on average 1.0423728813559323) internal successors, (246), 236 states have internal predecessors, (246), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:26:59,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 251 transitions.
[2022-01-31 17:26:59,119 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 251 transitions. Word has length 235
[2022-01-31 17:26:59,119 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:26:59,119 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 251 transitions.
[2022-01-31 17:26:59,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.3626373626373627) internal successors, (215), 90 states have internal predecessors, (215), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:26:59,120 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 251 transitions.
[2022-01-31 17:26:59,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238
[2022-01-31 17:26:59,120 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:26:59,120 INFO L514 BasicCegarLoop]: trace histogram [88, 88, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:26:59,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90
[2022-01-31 17:26:59,120 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:26:59,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:26:59,121 INFO L85 PathProgramCache]: Analyzing trace with hash 660227983, now seen corresponding path program 88 times
[2022-01-31 17:26:59,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:26:59,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385167088]
[2022-01-31 17:26:59,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:26:59,123 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:26:59,123 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:26:59,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:26:59,145 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:26:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:01,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:27:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:27:01,815 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:27:01,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385167088]
[2022-01-31 17:27:01,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [385167088] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:27:01,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:27:01,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92
[2022-01-31 17:27:01,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588732090]
[2022-01-31 17:27:01,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:27:01,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states
[2022-01-31 17:27:01,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:27:01,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants.
[2022-01-31 17:27:01,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372
[2022-01-31 17:27:01,817 INFO L87 Difference]: Start difference. First operand 242 states and 251 transitions. Second operand has 92 states, 92 states have (on average 2.358695652173913) internal successors, (217), 91 states have internal predecessors, (217), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:05,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:27:05,018 INFO L93 Difference]: Finished difference Result 304 states and 322 transitions.
[2022-01-31 17:27:05,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states.
[2022-01-31 17:27:05,018 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.358695652173913) internal successors, (217), 91 states have internal predecessors, (217), 2 states have call successors, (3), 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 237
[2022-01-31 17:27:05,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:27:05,019 INFO L225 Difference]: With dead ends: 304
[2022-01-31 17:27:05,019 INFO L226 Difference]: Without dead ends: 245
[2022-01-31 17:27:05,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4004 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=12285, Invalid=20295, Unknown=0, NotChecked=0, Total=32580
[2022-01-31 17:27:05,021 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 223 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:27:05,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 61 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:27:05,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states.
[2022-01-31 17:27:05,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 244.
[2022-01-31 17:27:05,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 238 states have (on average 1.0420168067226891) internal successors, (248), 238 states have internal predecessors, (248), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:27:05,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 253 transitions.
[2022-01-31 17:27:05,070 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 253 transitions. Word has length 237
[2022-01-31 17:27:05,070 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:27:05,070 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 253 transitions.
[2022-01-31 17:27:05,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.358695652173913) internal successors, (217), 91 states have internal predecessors, (217), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:05,070 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 253 transitions.
[2022-01-31 17:27:05,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240
[2022-01-31 17:27:05,071 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:27:05,071 INFO L514 BasicCegarLoop]: trace histogram [89, 89, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:27:05,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91
[2022-01-31 17:27:05,071 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:27:05,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:27:05,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2115491501, now seen corresponding path program 89 times
[2022-01-31 17:27:05,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:27:05,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459081457]
[2022-01-31 17:27:05,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:27:05,073 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:27:05,073 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:27:05,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:27:05,097 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:27:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:07,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:27:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:27:07,852 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:27:07,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459081457]
[2022-01-31 17:27:07,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1459081457] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:27:07,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:27:07,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93
[2022-01-31 17:27:07,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610610473]
[2022-01-31 17:27:07,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:27:07,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states
[2022-01-31 17:27:07,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:27:07,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants.
[2022-01-31 17:27:07,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556
[2022-01-31 17:27:07,855 INFO L87 Difference]: Start difference. First operand 244 states and 253 transitions. Second operand has 93 states, 93 states have (on average 2.3548387096774195) internal successors, (219), 92 states have internal predecessors, (219), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:11,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:27:11,284 INFO L93 Difference]: Finished difference Result 306 states and 324 transitions.
[2022-01-31 17:27:11,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states.
[2022-01-31 17:27:11,285 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.3548387096774195) internal successors, (219), 92 states have internal predecessors, (219), 2 states have call successors, (3), 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 239
[2022-01-31 17:27:11,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:27:11,286 INFO L225 Difference]: With dead ends: 306
[2022-01-31 17:27:11,286 INFO L226 Difference]: Without dead ends: 247
[2022-01-31 17:27:11,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4094 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=12558, Invalid=20748, Unknown=0, NotChecked=0, Total=33306
[2022-01-31 17:27:11,296 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 225 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:27:11,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 81 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:27:11,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states.
[2022-01-31 17:27:11,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 246.
[2022-01-31 17:27:11,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 240 states have (on average 1.0416666666666667) internal successors, (250), 240 states have internal predecessors, (250), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:27:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 255 transitions.
[2022-01-31 17:27:11,376 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 255 transitions. Word has length 239
[2022-01-31 17:27:11,376 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:27:11,376 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 255 transitions.
[2022-01-31 17:27:11,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.3548387096774195) internal successors, (219), 92 states have internal predecessors, (219), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:11,376 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 255 transitions.
[2022-01-31 17:27:11,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242
[2022-01-31 17:27:11,377 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:27:11,377 INFO L514 BasicCegarLoop]: trace histogram [90, 90, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:27:11,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92
[2022-01-31 17:27:11,377 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:27:11,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:27:11,378 INFO L85 PathProgramCache]: Analyzing trace with hash 464393803, now seen corresponding path program 90 times
[2022-01-31 17:27:11,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:27:11,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530239679]
[2022-01-31 17:27:11,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:27:11,382 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:27:11,382 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:27:11,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:27:11,405 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:27:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:14,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:27:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:14,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:27:14,228 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:27:14,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530239679]
[2022-01-31 17:27:14,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1530239679] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:27:14,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:27:14,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94
[2022-01-31 17:27:14,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866558540]
[2022-01-31 17:27:14,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:27:14,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states
[2022-01-31 17:27:14,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:27:14,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants.
[2022-01-31 17:27:14,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742
[2022-01-31 17:27:14,231 INFO L87 Difference]: Start difference. First operand 246 states and 255 transitions. Second operand has 94 states, 94 states have (on average 2.351063829787234) internal successors, (221), 93 states have internal predecessors, (221), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:17,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:27:17,936 INFO L93 Difference]: Finished difference Result 308 states and 326 transitions.
[2022-01-31 17:27:17,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states.
[2022-01-31 17:27:17,936 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.351063829787234) internal successors, (221), 93 states have internal predecessors, (221), 2 states have call successors, (3), 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 241
[2022-01-31 17:27:17,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:27:17,937 INFO L225 Difference]: With dead ends: 308
[2022-01-31 17:27:17,937 INFO L226 Difference]: Without dead ends: 249
[2022-01-31 17:27:17,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4185 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=12834, Invalid=21206, Unknown=0, NotChecked=0, Total=34040
[2022-01-31 17:27:17,938 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 227 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:27:17,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 71 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:27:17,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states.
[2022-01-31 17:27:18,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 248.
[2022-01-31 17:27:18,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 242 states have (on average 1.0413223140495869) internal successors, (252), 242 states have internal predecessors, (252), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:27:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 257 transitions.
[2022-01-31 17:27:18,018 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 257 transitions. Word has length 241
[2022-01-31 17:27:18,018 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:27:18,018 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 257 transitions.
[2022-01-31 17:27:18,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.351063829787234) internal successors, (221), 93 states have internal predecessors, (221), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:18,018 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 257 transitions.
[2022-01-31 17:27:18,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244
[2022-01-31 17:27:18,020 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:27:18,020 INFO L514 BasicCegarLoop]: trace histogram [91, 91, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:27:18,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93
[2022-01-31 17:27:18,020 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:27:18,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:27:18,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1397561751, now seen corresponding path program 91 times
[2022-01-31 17:27:18,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:27:18,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833495000]
[2022-01-31 17:27:18,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:27:18,023 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:27:18,023 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:27:18,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:27:18,046 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:27:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:21,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:27:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:21,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:27:21,204 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:27:21,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833495000]
[2022-01-31 17:27:21,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1833495000] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:27:21,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:27:21,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95
[2022-01-31 17:27:21,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105487369]
[2022-01-31 17:27:21,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:27:21,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states
[2022-01-31 17:27:21,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:27:21,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants.
[2022-01-31 17:27:21,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930
[2022-01-31 17:27:21,207 INFO L87 Difference]: Start difference. First operand 248 states and 257 transitions. Second operand has 95 states, 95 states have (on average 2.3473684210526318) internal successors, (223), 94 states have internal predecessors, (223), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:25,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:27:25,290 INFO L93 Difference]: Finished difference Result 310 states and 328 transitions.
[2022-01-31 17:27:25,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states.
[2022-01-31 17:27:25,291 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.3473684210526318) internal successors, (223), 94 states have internal predecessors, (223), 2 states have call successors, (3), 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 243
[2022-01-31 17:27:25,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:27:25,292 INFO L225 Difference]: With dead ends: 310
[2022-01-31 17:27:25,292 INFO L226 Difference]: Without dead ends: 251
[2022-01-31 17:27:25,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4277 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782
[2022-01-31 17:27:25,294 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 229 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:27:25,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 76 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:27:25,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states.
[2022-01-31 17:27:25,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 250.
[2022-01-31 17:27:25,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 244 states have (on average 1.040983606557377) internal successors, (254), 244 states have internal predecessors, (254), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:27:25,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 259 transitions.
[2022-01-31 17:27:25,364 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 259 transitions. Word has length 243
[2022-01-31 17:27:25,364 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:27:25,364 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 259 transitions.
[2022-01-31 17:27:25,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.3473684210526318) internal successors, (223), 94 states have internal predecessors, (223), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:25,364 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 259 transitions.
[2022-01-31 17:27:25,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246
[2022-01-31 17:27:25,365 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:27:25,366 INFO L514 BasicCegarLoop]: trace histogram [92, 92, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:27:25,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94
[2022-01-31 17:27:25,366 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:27:25,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:27:25,366 INFO L85 PathProgramCache]: Analyzing trace with hash 264513287, now seen corresponding path program 92 times
[2022-01-31 17:27:25,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:27:25,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431492551]
[2022-01-31 17:27:25,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:27:25,368 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:27:25,368 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:27:25,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:27:25,392 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:27:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:28,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:27:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:28,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:27:28,774 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:27:28,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431492551]
[2022-01-31 17:27:28,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1431492551] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:27:28,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:27:28,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96
[2022-01-31 17:27:28,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747622092]
[2022-01-31 17:27:28,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:27:28,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states
[2022-01-31 17:27:28,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:27:28,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants.
[2022-01-31 17:27:28,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120
[2022-01-31 17:27:28,777 INFO L87 Difference]: Start difference. First operand 250 states and 259 transitions. Second operand has 96 states, 96 states have (on average 2.34375) internal successors, (225), 95 states have internal predecessors, (225), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:32,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:27:32,354 INFO L93 Difference]: Finished difference Result 312 states and 330 transitions.
[2022-01-31 17:27:32,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states.
[2022-01-31 17:27:32,355 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.34375) internal successors, (225), 95 states have internal predecessors, (225), 2 states have call successors, (3), 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 245
[2022-01-31 17:27:32,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:27:32,355 INFO L225 Difference]: With dead ends: 312
[2022-01-31 17:27:32,356 INFO L226 Difference]: Without dead ends: 253
[2022-01-31 17:27:32,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4370 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=13395, Invalid=22137, Unknown=0, NotChecked=0, Total=35532
[2022-01-31 17:27:32,358 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 231 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:27:32,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 66 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:27:32,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states.
[2022-01-31 17:27:32,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 252.
[2022-01-31 17:27:32,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 246 states have (on average 1.0406504065040652) internal successors, (256), 246 states have internal predecessors, (256), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:27:32,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 261 transitions.
[2022-01-31 17:27:32,427 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 261 transitions. Word has length 245
[2022-01-31 17:27:32,427 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:27:32,427 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 261 transitions.
[2022-01-31 17:27:32,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.34375) internal successors, (225), 95 states have internal predecessors, (225), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:32,428 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 261 transitions.
[2022-01-31 17:27:32,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248
[2022-01-31 17:27:32,428 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:27:32,428 INFO L514 BasicCegarLoop]: trace histogram [93, 93, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:27:32,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95
[2022-01-31 17:27:32,428 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:27:32,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:27:32,429 INFO L85 PathProgramCache]: Analyzing trace with hash -209209307, now seen corresponding path program 93 times
[2022-01-31 17:27:32,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:27:32,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488454914]
[2022-01-31 17:27:32,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:27:32,430 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:27:32,430 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:27:32,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:27:32,446 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:27:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:35,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:27:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:35,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:27:35,445 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:27:35,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488454914]
[2022-01-31 17:27:35,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [488454914] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:27:35,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:27:35,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97
[2022-01-31 17:27:35,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293789172]
[2022-01-31 17:27:35,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:27:35,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states
[2022-01-31 17:27:35,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:27:35,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants.
[2022-01-31 17:27:35,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312
[2022-01-31 17:27:35,447 INFO L87 Difference]: Start difference. First operand 252 states and 261 transitions. Second operand has 97 states, 97 states have (on average 2.3402061855670104) internal successors, (227), 96 states have internal predecessors, (227), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:39,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:27:39,032 INFO L93 Difference]: Finished difference Result 314 states and 332 transitions.
[2022-01-31 17:27:39,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states.
[2022-01-31 17:27:39,032 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.3402061855670104) internal successors, (227), 96 states have internal predecessors, (227), 2 states have call successors, (3), 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 247
[2022-01-31 17:27:39,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:27:39,033 INFO L225 Difference]: With dead ends: 314
[2022-01-31 17:27:39,033 INFO L226 Difference]: Without dead ends: 255
[2022-01-31 17:27:39,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4464 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=13680, Invalid=22610, Unknown=0, NotChecked=0, Total=36290
[2022-01-31 17:27:39,035 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 233 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:27:39,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 76 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:27:39,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states.
[2022-01-31 17:27:39,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254.
[2022-01-31 17:27:39,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 248 states have (on average 1.0403225806451613) internal successors, (258), 248 states have internal predecessors, (258), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:27:39,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 263 transitions.
[2022-01-31 17:27:39,105 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 263 transitions. Word has length 247
[2022-01-31 17:27:39,105 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:27:39,105 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 263 transitions.
[2022-01-31 17:27:39,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.3402061855670104) internal successors, (227), 96 states have internal predecessors, (227), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:39,105 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 263 transitions.
[2022-01-31 17:27:39,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250
[2022-01-31 17:27:39,106 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:27:39,106 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:27:39,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96
[2022-01-31 17:27:39,106 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:27:39,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:27:39,106 INFO L85 PathProgramCache]: Analyzing trace with hash -190088765, now seen corresponding path program 94 times
[2022-01-31 17:27:39,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:27:39,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821376932]
[2022-01-31 17:27:39,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:27:39,109 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:27:39,109 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:27:39,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:27:39,133 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:27:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:42,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:27:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:27:42,312 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:27:42,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821376932]
[2022-01-31 17:27:42,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1821376932] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:27:42,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:27:42,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98
[2022-01-31 17:27:42,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063119968]
[2022-01-31 17:27:42,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:27:42,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states
[2022-01-31 17:27:42,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:27:42,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants.
[2022-01-31 17:27:42,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506
[2022-01-31 17:27:42,314 INFO L87 Difference]: Start difference. First operand 254 states and 263 transitions. Second operand has 98 states, 98 states have (on average 2.336734693877551) internal successors, (229), 97 states have internal predecessors, (229), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:45,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:27:45,994 INFO L93 Difference]: Finished difference Result 316 states and 334 transitions.
[2022-01-31 17:27:45,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states.
[2022-01-31 17:27:45,994 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.336734693877551) internal successors, (229), 97 states have internal predecessors, (229), 2 states have call successors, (3), 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 249
[2022-01-31 17:27:45,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:27:45,995 INFO L225 Difference]: With dead ends: 316
[2022-01-31 17:27:45,995 INFO L226 Difference]: Without dead ends: 257
[2022-01-31 17:27:45,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4559 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=13968, Invalid=23088, Unknown=0, NotChecked=0, Total=37056
[2022-01-31 17:27:45,997 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 235 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:27:45,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 61 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:27:45,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states.
[2022-01-31 17:27:46,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 256.
[2022-01-31 17:27:46,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 250 states have (on average 1.04) internal successors, (260), 250 states have internal predecessors, (260), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:27:46,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 265 transitions.
[2022-01-31 17:27:46,057 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 265 transitions. Word has length 249
[2022-01-31 17:27:46,057 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:27:46,057 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 265 transitions.
[2022-01-31 17:27:46,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.336734693877551) internal successors, (229), 97 states have internal predecessors, (229), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:46,057 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 265 transitions.
[2022-01-31 17:27:46,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252
[2022-01-31 17:27:46,058 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:27:46,058 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:27:46,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97
[2022-01-31 17:27:46,058 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:27:46,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:27:46,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1004882913, now seen corresponding path program 95 times
[2022-01-31 17:27:46,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:27:46,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716804237]
[2022-01-31 17:27:46,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:27:46,060 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:27:46,061 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:27:46,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:27:46,078 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:27:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:49,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:27:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:49,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:27:49,601 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:27:49,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716804237]
[2022-01-31 17:27:49,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [716804237] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:27:49,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:27:49,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99
[2022-01-31 17:27:49,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384069203]
[2022-01-31 17:27:49,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:27:49,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states
[2022-01-31 17:27:49,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:27:49,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants.
[2022-01-31 17:27:49,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702
[2022-01-31 17:27:49,604 INFO L87 Difference]: Start difference. First operand 256 states and 265 transitions. Second operand has 99 states, 99 states have (on average 2.3333333333333335) internal successors, (231), 98 states have internal predecessors, (231), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:53,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:27:53,682 INFO L93 Difference]: Finished difference Result 318 states and 336 transitions.
[2022-01-31 17:27:53,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states.
[2022-01-31 17:27:53,682 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.3333333333333335) internal successors, (231), 98 states have internal predecessors, (231), 2 states have call successors, (3), 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 251
[2022-01-31 17:27:53,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:27:53,683 INFO L225 Difference]: With dead ends: 318
[2022-01-31 17:27:53,683 INFO L226 Difference]: Without dead ends: 259
[2022-01-31 17:27:53,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4655 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830
[2022-01-31 17:27:53,686 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 237 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:27:53,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 86 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:27:53,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states.
[2022-01-31 17:27:53,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 258.
[2022-01-31 17:27:53,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 252 states have (on average 1.0396825396825398) internal successors, (262), 252 states have internal predecessors, (262), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:27:53,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 267 transitions.
[2022-01-31 17:27:53,742 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 267 transitions. Word has length 251
[2022-01-31 17:27:53,742 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:27:53,742 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 267 transitions.
[2022-01-31 17:27:53,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.3333333333333335) internal successors, (231), 98 states have internal predecessors, (231), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:27:53,743 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 267 transitions.
[2022-01-31 17:27:53,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254
[2022-01-31 17:27:53,743 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:27:53,743 INFO L514 BasicCegarLoop]: trace histogram [96, 96, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:27:53,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98
[2022-01-31 17:27:53,743 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:27:53,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:27:53,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1678569857, now seen corresponding path program 96 times
[2022-01-31 17:27:53,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:27:53,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242200455]
[2022-01-31 17:27:53,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:27:53,748 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:27:53,748 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:27:53,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:27:53,765 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:27:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:57,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:27:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:27:57,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:27:57,382 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:27:57,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242200455]
[2022-01-31 17:27:57,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1242200455] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:27:57,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:27:57,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100
[2022-01-31 17:27:57,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884607537]
[2022-01-31 17:27:57,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:27:57,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states
[2022-01-31 17:27:57,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:27:57,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants.
[2022-01-31 17:27:57,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900
[2022-01-31 17:27:57,385 INFO L87 Difference]: Start difference. First operand 258 states and 267 transitions. Second operand has 100 states, 100 states have (on average 2.33) internal successors, (233), 99 states have internal predecessors, (233), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:01,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:28:01,609 INFO L93 Difference]: Finished difference Result 320 states and 338 transitions.
[2022-01-31 17:28:01,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states.
[2022-01-31 17:28:01,610 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.33) internal successors, (233), 99 states have internal predecessors, (233), 2 states have call successors, (3), 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 253
[2022-01-31 17:28:01,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:28:01,611 INFO L225 Difference]: With dead ends: 320
[2022-01-31 17:28:01,611 INFO L226 Difference]: Without dead ends: 261
[2022-01-31 17:28:01,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4752 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=14553, Invalid=24059, Unknown=0, NotChecked=0, Total=38612
[2022-01-31 17:28:01,614 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 239 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:28:01,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 81 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:28:01,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states.
[2022-01-31 17:28:01,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260.
[2022-01-31 17:28:01,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 254 states have (on average 1.0393700787401574) internal successors, (264), 254 states have internal predecessors, (264), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:28:01,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 269 transitions.
[2022-01-31 17:28:01,691 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 269 transitions. Word has length 253
[2022-01-31 17:28:01,691 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:28:01,691 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 269 transitions.
[2022-01-31 17:28:01,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.33) internal successors, (233), 99 states have internal predecessors, (233), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:01,691 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 269 transitions.
[2022-01-31 17:28:01,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256
[2022-01-31 17:28:01,692 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:28:01,692 INFO L514 BasicCegarLoop]: trace histogram [97, 97, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:28:01,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99
[2022-01-31 17:28:01,693 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:28:01,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:28:01,693 INFO L85 PathProgramCache]: Analyzing trace with hash 798663069, now seen corresponding path program 97 times
[2022-01-31 17:28:01,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:28:01,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274168481]
[2022-01-31 17:28:01,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:28:01,695 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:28:01,695 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:28:01,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:28:01,720 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:28:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:04,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:28:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:04,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:28:04,968 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:28:04,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274168481]
[2022-01-31 17:28:04,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1274168481] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:28:04,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:28:04,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101
[2022-01-31 17:28:04,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080261725]
[2022-01-31 17:28:04,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:28:04,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states
[2022-01-31 17:28:04,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:28:04,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants.
[2022-01-31 17:28:04,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100
[2022-01-31 17:28:04,971 INFO L87 Difference]: Start difference. First operand 260 states and 269 transitions. Second operand has 101 states, 101 states have (on average 2.3267326732673266) internal successors, (235), 100 states have internal predecessors, (235), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:08,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:28:08,818 INFO L93 Difference]: Finished difference Result 322 states and 340 transitions.
[2022-01-31 17:28:08,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states.
[2022-01-31 17:28:08,818 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.3267326732673266) internal successors, (235), 100 states have internal predecessors, (235), 2 states have call successors, (3), 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 255
[2022-01-31 17:28:08,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:28:08,819 INFO L225 Difference]: With dead ends: 322
[2022-01-31 17:28:08,819 INFO L226 Difference]: Without dead ends: 263
[2022-01-31 17:28:08,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4850 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=14850, Invalid=24552, Unknown=0, NotChecked=0, Total=39402
[2022-01-31 17:28:08,822 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 241 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:28:08,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 71 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:28:08,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states.
[2022-01-31 17:28:08,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262.
[2022-01-31 17:28:08,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 256 states have (on average 1.0390625) internal successors, (266), 256 states have internal predecessors, (266), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:28:08,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 271 transitions.
[2022-01-31 17:28:08,897 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 271 transitions. Word has length 255
[2022-01-31 17:28:08,897 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:28:08,897 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 271 transitions.
[2022-01-31 17:28:08,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.3267326732673266) internal successors, (235), 100 states have internal predecessors, (235), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:08,897 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 271 transitions.
[2022-01-31 17:28:08,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258
[2022-01-31 17:28:08,898 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:28:08,898 INFO L514 BasicCegarLoop]: trace histogram [98, 98, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:28:08,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100
[2022-01-31 17:28:08,898 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:28:08,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:28:08,899 INFO L85 PathProgramCache]: Analyzing trace with hash 2007622971, now seen corresponding path program 98 times
[2022-01-31 17:28:08,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:28:08,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461393060]
[2022-01-31 17:28:08,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:28:08,901 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:28:08,901 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:28:08,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:28:08,927 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:28:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:12,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:28:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:12,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:28:12,163 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:28:12,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461393060]
[2022-01-31 17:28:12,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1461393060] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:28:12,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:28:12,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102
[2022-01-31 17:28:12,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081371009]
[2022-01-31 17:28:12,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:28:12,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states
[2022-01-31 17:28:12,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:28:12,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants.
[2022-01-31 17:28:12,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302
[2022-01-31 17:28:12,166 INFO L87 Difference]: Start difference. First operand 262 states and 271 transitions. Second operand has 102 states, 102 states have (on average 2.323529411764706) internal successors, (237), 101 states have internal predecessors, (237), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:16,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:28:16,057 INFO L93 Difference]: Finished difference Result 324 states and 342 transitions.
[2022-01-31 17:28:16,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states.
[2022-01-31 17:28:16,057 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.323529411764706) internal successors, (237), 101 states have internal predecessors, (237), 2 states have call successors, (3), 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 257
[2022-01-31 17:28:16,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:28:16,058 INFO L225 Difference]: With dead ends: 324
[2022-01-31 17:28:16,058 INFO L226 Difference]: Without dead ends: 265
[2022-01-31 17:28:16,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4949 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=15150, Invalid=25050, Unknown=0, NotChecked=0, Total=40200
[2022-01-31 17:28:16,061 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 243 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:28:16,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 66 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:28:16,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states.
[2022-01-31 17:28:16,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 264.
[2022-01-31 17:28:16,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 258 states have (on average 1.0387596899224807) internal successors, (268), 258 states have internal predecessors, (268), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:28:16,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 273 transitions.
[2022-01-31 17:28:16,136 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 273 transitions. Word has length 257
[2022-01-31 17:28:16,136 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:28:16,136 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 273 transitions.
[2022-01-31 17:28:16,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.323529411764706) internal successors, (237), 101 states have internal predecessors, (237), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:16,136 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 273 transitions.
[2022-01-31 17:28:16,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260
[2022-01-31 17:28:16,137 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:28:16,137 INFO L514 BasicCegarLoop]: trace histogram [99, 99, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:28:16,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101
[2022-01-31 17:28:16,137 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:28:16,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:28:16,138 INFO L85 PathProgramCache]: Analyzing trace with hash -118048423, now seen corresponding path program 99 times
[2022-01-31 17:28:16,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:28:16,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029215058]
[2022-01-31 17:28:16,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:28:16,139 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:28:16,139 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:28:16,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:28:16,159 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:28:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:19,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:28:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:19,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:28:19,439 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:28:19,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029215058]
[2022-01-31 17:28:19,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1029215058] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:28:19,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:28:19,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103
[2022-01-31 17:28:19,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626061375]
[2022-01-31 17:28:19,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:28:19,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states
[2022-01-31 17:28:19,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:28:19,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants.
[2022-01-31 17:28:19,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506
[2022-01-31 17:28:19,442 INFO L87 Difference]: Start difference. First operand 264 states and 273 transitions. Second operand has 103 states, 103 states have (on average 2.320388349514563) internal successors, (239), 102 states have internal predecessors, (239), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:23,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:28:23,450 INFO L93 Difference]: Finished difference Result 326 states and 344 transitions.
[2022-01-31 17:28:23,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states.
[2022-01-31 17:28:23,450 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.320388349514563) internal successors, (239), 102 states have internal predecessors, (239), 2 states have call successors, (3), 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 259
[2022-01-31 17:28:23,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:28:23,451 INFO L225 Difference]: With dead ends: 326
[2022-01-31 17:28:23,451 INFO L226 Difference]: Without dead ends: 267
[2022-01-31 17:28:23,453 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
[2022-01-31 17:28:23,453 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 245 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:28:23,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 76 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:28:23,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states.
[2022-01-31 17:28:23,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 266.
[2022-01-31 17:28:23,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 260 states have (on average 1.0384615384615385) internal successors, (270), 260 states have internal predecessors, (270), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:28:23,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 275 transitions.
[2022-01-31 17:28:23,515 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 275 transitions. Word has length 259
[2022-01-31 17:28:23,515 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:28:23,515 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 275 transitions.
[2022-01-31 17:28:23,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.320388349514563) internal successors, (239), 102 states have internal predecessors, (239), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:23,515 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 275 transitions.
[2022-01-31 17:28:23,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262
[2022-01-31 17:28:23,516 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:28:23,516 INFO L514 BasicCegarLoop]: trace histogram [100, 100, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:28:23,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102
[2022-01-31 17:28:23,516 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:28:23,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:28:23,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1516174839, now seen corresponding path program 100 times
[2022-01-31 17:28:23,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:28:23,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145021882]
[2022-01-31 17:28:23,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:28:23,519 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:28:23,519 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:28:23,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:28:23,539 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:28:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:26,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:28:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:26,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:28:26,894 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:28:26,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145021882]
[2022-01-31 17:28:26,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [145021882] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:28:26,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:28:26,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104
[2022-01-31 17:28:26,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094397761]
[2022-01-31 17:28:26,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:28:26,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states
[2022-01-31 17:28:26,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:28:26,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants.
[2022-01-31 17:28:26,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712
[2022-01-31 17:28:26,897 INFO L87 Difference]: Start difference. First operand 266 states and 275 transitions. Second operand has 104 states, 104 states have (on average 2.3173076923076925) internal successors, (241), 103 states have internal predecessors, (241), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:30,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:28:30,968 INFO L93 Difference]: Finished difference Result 328 states and 346 transitions.
[2022-01-31 17:28:30,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states.
[2022-01-31 17:28:30,968 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.3173076923076925) internal successors, (241), 103 states have internal predecessors, (241), 2 states have call successors, (3), 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 261
[2022-01-31 17:28:30,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:28:30,969 INFO L225 Difference]: With dead ends: 328
[2022-01-31 17:28:30,969 INFO L226 Difference]: Without dead ends: 269
[2022-01-31 17:28:30,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5150 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=15759, Invalid=26061, Unknown=0, NotChecked=0, Total=41820
[2022-01-31 17:28:30,972 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 247 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:28:30,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 81 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:28:30,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states.
[2022-01-31 17:28:31,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 268.
[2022-01-31 17:28:31,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 262 states have (on average 1.0381679389312977) internal successors, (272), 262 states have internal predecessors, (272), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:28:31,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 277 transitions.
[2022-01-31 17:28:31,045 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 277 transitions. Word has length 261
[2022-01-31 17:28:31,045 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:28:31,045 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 277 transitions.
[2022-01-31 17:28:31,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.3173076923076925) internal successors, (241), 103 states have internal predecessors, (241), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:31,045 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 277 transitions.
[2022-01-31 17:28:31,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264
[2022-01-31 17:28:31,046 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:28:31,046 INFO L514 BasicCegarLoop]: trace histogram [101, 101, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:28:31,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103
[2022-01-31 17:28:31,046 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:28:31,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:28:31,046 INFO L85 PathProgramCache]: Analyzing trace with hash 46699285, now seen corresponding path program 101 times
[2022-01-31 17:28:31,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:28:31,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352592374]
[2022-01-31 17:28:31,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:28:31,048 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:28:31,048 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:28:31,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:28:31,069 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:28:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:34,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:28:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:34,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:28:34,508 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:28:34,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352592374]
[2022-01-31 17:28:34,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [352592374] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:28:34,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:28:34,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105
[2022-01-31 17:28:34,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261738475]
[2022-01-31 17:28:34,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:28:34,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states
[2022-01-31 17:28:34,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:28:34,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants.
[2022-01-31 17:28:34,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920
[2022-01-31 17:28:34,510 INFO L87 Difference]: Start difference. First operand 268 states and 277 transitions. Second operand has 105 states, 105 states have (on average 2.3142857142857145) internal successors, (243), 104 states have internal predecessors, (243), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:38,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:28:38,675 INFO L93 Difference]: Finished difference Result 330 states and 348 transitions.
[2022-01-31 17:28:38,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states.
[2022-01-31 17:28:38,675 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.3142857142857145) internal successors, (243), 104 states have internal predecessors, (243), 2 states have call successors, (3), 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 263
[2022-01-31 17:28:38,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:28:38,676 INFO L225 Difference]: With dead ends: 330
[2022-01-31 17:28:38,676 INFO L226 Difference]: Without dead ends: 271
[2022-01-31 17:28:38,678 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
[2022-01-31 17:28:38,678 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 249 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:28:38,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 81 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:28:38,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states.
[2022-01-31 17:28:38,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 270.
[2022-01-31 17:28:38,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 264 states have (on average 1.0378787878787878) internal successors, (274), 264 states have internal predecessors, (274), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:28:38,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 279 transitions.
[2022-01-31 17:28:38,756 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 279 transitions. Word has length 263
[2022-01-31 17:28:38,756 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:28:38,756 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 279 transitions.
[2022-01-31 17:28:38,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.3142857142857145) internal successors, (243), 104 states have internal predecessors, (243), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:38,757 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 279 transitions.
[2022-01-31 17:28:38,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266
[2022-01-31 17:28:38,757 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:28:38,757 INFO L514 BasicCegarLoop]: trace histogram [102, 102, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:28:38,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104
[2022-01-31 17:28:38,757 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:28:38,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:28:38,758 INFO L85 PathProgramCache]: Analyzing trace with hash 924932275, now seen corresponding path program 102 times
[2022-01-31 17:28:38,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:28:38,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464449051]
[2022-01-31 17:28:38,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:28:38,759 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:28:38,759 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:28:38,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:28:38,779 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:28:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:42,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:28:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:42,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:28:42,262 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:28:42,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464449051]
[2022-01-31 17:28:42,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [464449051] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:28:42,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:28:42,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106
[2022-01-31 17:28:42,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202650048]
[2022-01-31 17:28:42,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:28:42,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states
[2022-01-31 17:28:42,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:28:42,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants.
[2022-01-31 17:28:42,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130
[2022-01-31 17:28:42,265 INFO L87 Difference]: Start difference. First operand 270 states and 279 transitions. Second operand has 106 states, 106 states have (on average 2.311320754716981) internal successors, (245), 105 states have internal predecessors, (245), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:46,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:28:46,525 INFO L93 Difference]: Finished difference Result 332 states and 350 transitions.
[2022-01-31 17:28:46,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states.
[2022-01-31 17:28:46,525 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.311320754716981) internal successors, (245), 105 states have internal predecessors, (245), 2 states have call successors, (3), 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 265
[2022-01-31 17:28:46,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:28:46,526 INFO L225 Difference]: With dead ends: 332
[2022-01-31 17:28:46,526 INFO L226 Difference]: Without dead ends: 273
[2022-01-31 17:28:46,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5355 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=16380, Invalid=27092, Unknown=0, NotChecked=0, Total=43472
[2022-01-31 17:28:46,528 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 251 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:28:46,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 86 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:28:46,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states.
[2022-01-31 17:28:46,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 272.
[2022-01-31 17:28:46,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 266 states have (on average 1.037593984962406) internal successors, (276), 266 states have internal predecessors, (276), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:28:46,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 281 transitions.
[2022-01-31 17:28:46,594 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 281 transitions. Word has length 265
[2022-01-31 17:28:46,594 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:28:46,594 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 281 transitions.
[2022-01-31 17:28:46,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 2.311320754716981) internal successors, (245), 105 states have internal predecessors, (245), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:46,594 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 281 transitions.
[2022-01-31 17:28:46,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268
[2022-01-31 17:28:46,595 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:28:46,595 INFO L514 BasicCegarLoop]: trace histogram [103, 103, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:28:46,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105
[2022-01-31 17:28:46,595 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:28:46,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:28:46,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1201721647, now seen corresponding path program 103 times
[2022-01-31 17:28:46,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:28:46,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985065794]
[2022-01-31 17:28:46,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:28:46,597 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:28:46,597 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:28:46,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:28:46,619 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:28:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:50,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:28:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:50,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:28:50,217 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:28:50,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985065794]
[2022-01-31 17:28:50,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1985065794] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:28:50,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:28:50,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107
[2022-01-31 17:28:50,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815125898]
[2022-01-31 17:28:50,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:28:50,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states
[2022-01-31 17:28:50,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:28:50,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants.
[2022-01-31 17:28:50,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342
[2022-01-31 17:28:50,219 INFO L87 Difference]: Start difference. First operand 272 states and 281 transitions. Second operand has 107 states, 107 states have (on average 2.308411214953271) internal successors, (247), 106 states have internal predecessors, (247), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:54,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:28:54,490 INFO L93 Difference]: Finished difference Result 334 states and 352 transitions.
[2022-01-31 17:28:54,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states.
[2022-01-31 17:28:54,490 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.308411214953271) internal successors, (247), 106 states have internal predecessors, (247), 2 states have call successors, (3), 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 267
[2022-01-31 17:28:54,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:28:54,491 INFO L225 Difference]: With dead ends: 334
[2022-01-31 17:28:54,491 INFO L226 Difference]: Without dead ends: 275
[2022-01-31 17:28:54,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5459 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310
[2022-01-31 17:28:54,495 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 253 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:28:54,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 66 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:28:54,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states.
[2022-01-31 17:28:54,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 274.
[2022-01-31 17:28:54,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 268 states have (on average 1.037313432835821) internal successors, (278), 268 states have internal predecessors, (278), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:28:54,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 283 transitions.
[2022-01-31 17:28:54,580 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 283 transitions. Word has length 267
[2022-01-31 17:28:54,580 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:28:54,580 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 283 transitions.
[2022-01-31 17:28:54,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.308411214953271) internal successors, (247), 106 states have internal predecessors, (247), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:28:54,580 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 283 transitions.
[2022-01-31 17:28:54,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270
[2022-01-31 17:28:54,581 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:28:54,581 INFO L514 BasicCegarLoop]: trace histogram [104, 104, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:28:54,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106
[2022-01-31 17:28:54,581 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:28:54,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:28:54,581 INFO L85 PathProgramCache]: Analyzing trace with hash -511707793, now seen corresponding path program 104 times
[2022-01-31 17:28:54,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:28:54,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835943273]
[2022-01-31 17:28:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:28:54,582 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:28:54,583 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:28:54,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:28:54,604 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:28:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:58,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:28:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:28:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:28:58,301 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:28:58,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835943273]
[2022-01-31 17:28:58,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1835943273] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:28:58,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:28:58,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108
[2022-01-31 17:28:58,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128594259]
[2022-01-31 17:28:58,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:28:58,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states
[2022-01-31 17:28:58,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:28:58,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants.
[2022-01-31 17:28:58,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556
[2022-01-31 17:28:58,303 INFO L87 Difference]: Start difference. First operand 274 states and 283 transitions. Second operand has 108 states, 108 states have (on average 2.3055555555555554) internal successors, (249), 107 states have internal predecessors, (249), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:02,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:02,734 INFO L93 Difference]: Finished difference Result 336 states and 354 transitions.
[2022-01-31 17:29:02,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states.
[2022-01-31 17:29:02,734 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.3055555555555554) internal successors, (249), 107 states have internal predecessors, (249), 2 states have call successors, (3), 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 269
[2022-01-31 17:29:02,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:02,735 INFO L225 Difference]: With dead ends: 336
[2022-01-31 17:29:02,735 INFO L226 Difference]: Without dead ends: 277
[2022-01-31 17:29:02,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5564 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=17013, Invalid=28143, Unknown=0, NotChecked=0, Total=45156
[2022-01-31 17:29:02,737 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 255 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:02,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 91 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:29:02,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states.
[2022-01-31 17:29:02,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 276.
[2022-01-31 17:29:02,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 270 states have (on average 1.037037037037037) internal successors, (280), 270 states have internal predecessors, (280), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:29:02,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 285 transitions.
[2022-01-31 17:29:02,805 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 285 transitions. Word has length 269
[2022-01-31 17:29:02,805 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:02,805 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 285 transitions.
[2022-01-31 17:29:02,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 2.3055555555555554) internal successors, (249), 107 states have internal predecessors, (249), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:02,805 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 285 transitions.
[2022-01-31 17:29:02,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272
[2022-01-31 17:29:02,806 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:02,806 INFO L514 BasicCegarLoop]: trace histogram [105, 105, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:02,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107
[2022-01-31 17:29:02,807 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:02,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:02,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1166642317, now seen corresponding path program 105 times
[2022-01-31 17:29:02,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:02,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926913842]
[2022-01-31 17:29:02,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:02,809 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:02,809 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:02,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:02,838 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:06,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:06,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:06,565 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:06,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926913842]
[2022-01-31 17:29:06,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1926913842] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:06,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:06,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [] total 109
[2022-01-31 17:29:06,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624202241]
[2022-01-31 17:29:06,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:06,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states
[2022-01-31 17:29:06,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:06,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants.
[2022-01-31 17:29:06,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772
[2022-01-31 17:29:06,567 INFO L87 Difference]: Start difference. First operand 276 states and 285 transitions. Second operand has 109 states, 109 states have (on average 2.302752293577982) internal successors, (251), 108 states have internal predecessors, (251), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:11,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:11,028 INFO L93 Difference]: Finished difference Result 338 states and 356 transitions.
[2022-01-31 17:29:11,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states.
[2022-01-31 17:29:11,029 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.302752293577982) internal successors, (251), 108 states have internal predecessors, (251), 2 states have call successors, (3), 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 271
[2022-01-31 17:29:11,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:11,029 INFO L225 Difference]: With dead ends: 338
[2022-01-31 17:29:11,029 INFO L226 Difference]: Without dead ends: 279
[2022-01-31 17:29:11,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5670 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=17334, Invalid=28676, Unknown=0, NotChecked=0, Total=46010
[2022-01-31 17:29:11,032 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 257 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:11,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 71 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:29:11,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states.
[2022-01-31 17:29:11,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 278.
[2022-01-31 17:29:11,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 272 states have (on average 1.036764705882353) internal successors, (282), 272 states have internal predecessors, (282), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:29:11,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 287 transitions.
[2022-01-31 17:29:11,100 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 287 transitions. Word has length 271
[2022-01-31 17:29:11,100 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:11,101 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 287 transitions.
[2022-01-31 17:29:11,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.302752293577982) internal successors, (251), 108 states have internal predecessors, (251), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:11,101 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 287 transitions.
[2022-01-31 17:29:11,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274
[2022-01-31 17:29:11,101 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:11,101 INFO L514 BasicCegarLoop]: trace histogram [106, 106, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:11,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108
[2022-01-31 17:29:11,102 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:11,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:11,102 INFO L85 PathProgramCache]: Analyzing trace with hash -846605269, now seen corresponding path program 106 times
[2022-01-31 17:29:11,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:11,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213278884]
[2022-01-31 17:29:11,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:11,103 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:11,103 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:11,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:11,139 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:14,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:14,884 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:14,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213278884]
[2022-01-31 17:29:14,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [213278884] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:14,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:14,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [110] imperfect sequences [] total 110
[2022-01-31 17:29:14,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960660899]
[2022-01-31 17:29:14,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:14,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states
[2022-01-31 17:29:14,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:14,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants.
[2022-01-31 17:29:14,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990
[2022-01-31 17:29:14,886 INFO L87 Difference]: Start difference. First operand 278 states and 287 transitions. Second operand has 110 states, 110 states have (on average 2.3) internal successors, (253), 109 states have internal predecessors, (253), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:19,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:19,397 INFO L93 Difference]: Finished difference Result 340 states and 358 transitions.
[2022-01-31 17:29:19,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states.
[2022-01-31 17:29:19,398 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 2.3) internal successors, (253), 109 states have internal predecessors, (253), 2 states have call successors, (3), 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 273
[2022-01-31 17:29:19,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:19,398 INFO L225 Difference]: With dead ends: 340
[2022-01-31 17:29:19,398 INFO L226 Difference]: Without dead ends: 281
[2022-01-31 17:29:19,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5777 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=17658, Invalid=29214, Unknown=0, NotChecked=0, Total=46872
[2022-01-31 17:29:19,401 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 259 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:19,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 71 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:29:19,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states.
[2022-01-31 17:29:19,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 280.
[2022-01-31 17:29:19,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 274 states have (on average 1.0364963503649636) internal successors, (284), 274 states have internal predecessors, (284), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:29:19,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 289 transitions.
[2022-01-31 17:29:19,471 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 289 transitions. Word has length 273
[2022-01-31 17:29:19,471 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:19,471 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 289 transitions.
[2022-01-31 17:29:19,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 2.3) internal successors, (253), 109 states have internal predecessors, (253), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:19,471 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 289 transitions.
[2022-01-31 17:29:19,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276
[2022-01-31 17:29:19,472 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:19,472 INFO L514 BasicCegarLoop]: trace histogram [107, 107, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:19,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109
[2022-01-31 17:29:19,472 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:19,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:19,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1452715081, now seen corresponding path program 107 times
[2022-01-31 17:29:19,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:19,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067562716]
[2022-01-31 17:29:19,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:19,474 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:19,474 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:19,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:19,504 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:23,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:23,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:23,341 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:23,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067562716]
[2022-01-31 17:29:23,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1067562716] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:23,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:23,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111
[2022-01-31 17:29:23,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890039601]
[2022-01-31 17:29:23,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:23,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states
[2022-01-31 17:29:23,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:23,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants.
[2022-01-31 17:29:23,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210
[2022-01-31 17:29:23,343 INFO L87 Difference]: Start difference. First operand 280 states and 289 transitions. Second operand has 111 states, 111 states have (on average 2.2972972972972974) internal successors, (255), 110 states have internal predecessors, (255), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:27,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:27,963 INFO L93 Difference]: Finished difference Result 342 states and 360 transitions.
[2022-01-31 17:29:27,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states.
[2022-01-31 17:29:27,964 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.2972972972972974) internal successors, (255), 110 states have internal predecessors, (255), 2 states have call successors, (3), 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 275
[2022-01-31 17:29:27,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:27,964 INFO L225 Difference]: With dead ends: 342
[2022-01-31 17:29:27,964 INFO L226 Difference]: Without dead ends: 283
[2022-01-31 17:29:27,967 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
[2022-01-31 17:29:27,967 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 261 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:27,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 86 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:29:27,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states.
[2022-01-31 17:29:28,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 282.
[2022-01-31 17:29:28,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 276 states have (on average 1.036231884057971) internal successors, (286), 276 states have internal predecessors, (286), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:29:28,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 291 transitions.
[2022-01-31 17:29:28,053 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 291 transitions. Word has length 275
[2022-01-31 17:29:28,053 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:28,054 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 291 transitions.
[2022-01-31 17:29:28,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 2.2972972972972974) internal successors, (255), 110 states have internal predecessors, (255), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:28,054 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 291 transitions.
[2022-01-31 17:29:28,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278
[2022-01-31 17:29:28,054 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:28,054 INFO L514 BasicCegarLoop]: trace histogram [108, 108, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:28,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110
[2022-01-31 17:29:28,055 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:28,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:28,055 INFO L85 PathProgramCache]: Analyzing trace with hash -808586009, now seen corresponding path program 108 times
[2022-01-31 17:29:28,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:28,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369652617]
[2022-01-31 17:29:28,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:28,056 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:28,056 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:28,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:28,078 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:31,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:31,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:31,943 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:31,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369652617]
[2022-01-31 17:29:31,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1369652617] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:31,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:31,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [112] imperfect sequences [] total 112
[2022-01-31 17:29:31,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563723081]
[2022-01-31 17:29:31,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:31,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states
[2022-01-31 17:29:31,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:31,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants.
[2022-01-31 17:29:31,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432
[2022-01-31 17:29:31,946 INFO L87 Difference]: Start difference. First operand 282 states and 291 transitions. Second operand has 112 states, 112 states have (on average 2.294642857142857) internal successors, (257), 111 states have internal predecessors, (257), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:36,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:36,640 INFO L93 Difference]: Finished difference Result 344 states and 362 transitions.
[2022-01-31 17:29:36,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states.
[2022-01-31 17:29:36,640 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.294642857142857) internal successors, (257), 111 states have internal predecessors, (257), 2 states have call successors, (3), 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 277
[2022-01-31 17:29:36,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:36,641 INFO L225 Difference]: With dead ends: 344
[2022-01-31 17:29:36,641 INFO L226 Difference]: Without dead ends: 285
[2022-01-31 17:29:36,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5994 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=18315, Invalid=30305, Unknown=0, NotChecked=0, Total=48620
[2022-01-31 17:29:36,644 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 263 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:36,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 76 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:29:36,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states.
[2022-01-31 17:29:36,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 284.
[2022-01-31 17:29:36,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 278 states have (on average 1.0359712230215827) internal successors, (288), 278 states have internal predecessors, (288), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:29:36,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 293 transitions.
[2022-01-31 17:29:36,732 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 293 transitions. Word has length 277
[2022-01-31 17:29:36,732 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:36,732 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 293 transitions.
[2022-01-31 17:29:36,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 2.294642857142857) internal successors, (257), 111 states have internal predecessors, (257), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:36,732 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 293 transitions.
[2022-01-31 17:29:36,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280
[2022-01-31 17:29:36,733 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:36,733 INFO L514 BasicCegarLoop]: trace histogram [109, 109, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:36,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111
[2022-01-31 17:29:36,733 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:36,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:36,733 INFO L85 PathProgramCache]: Analyzing trace with hash -665481723, now seen corresponding path program 109 times
[2022-01-31 17:29:36,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:36,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692136455]
[2022-01-31 17:29:36,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:36,735 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:36,735 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:36,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:36,759 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:40,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:40,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:40,740 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:40,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692136455]
[2022-01-31 17:29:40,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1692136455] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:40,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:40,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [113] imperfect sequences [] total 113
[2022-01-31 17:29:40,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104391820]
[2022-01-31 17:29:40,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:40,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states
[2022-01-31 17:29:40,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:40,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants.
[2022-01-31 17:29:40,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656
[2022-01-31 17:29:40,743 INFO L87 Difference]: Start difference. First operand 284 states and 293 transitions. Second operand has 113 states, 113 states have (on average 2.2920353982300883) internal successors, (259), 112 states have internal predecessors, (259), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:45,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:45,608 INFO L93 Difference]: Finished difference Result 346 states and 364 transitions.
[2022-01-31 17:29:45,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states.
[2022-01-31 17:29:45,608 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.2920353982300883) internal successors, (259), 112 states have internal predecessors, (259), 2 states have call successors, (3), 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 279
[2022-01-31 17:29:45,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:45,609 INFO L225 Difference]: With dead ends: 346
[2022-01-31 17:29:45,609 INFO L226 Difference]: Without dead ends: 287
[2022-01-31 17:29:45,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6104 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=18648, Invalid=30858, Unknown=0, NotChecked=0, Total=49506
[2022-01-31 17:29:45,611 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 265 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:45,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 91 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:29:45,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states.
[2022-01-31 17:29:45,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 286.
[2022-01-31 17:29:45,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 280 states have (on average 1.0357142857142858) internal successors, (290), 280 states have internal predecessors, (290), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:29:45,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 295 transitions.
[2022-01-31 17:29:45,686 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 295 transitions. Word has length 279
[2022-01-31 17:29:45,686 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:45,686 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 295 transitions.
[2022-01-31 17:29:45,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.2920353982300883) internal successors, (259), 112 states have internal predecessors, (259), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:45,686 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 295 transitions.
[2022-01-31 17:29:45,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282
[2022-01-31 17:29:45,687 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:45,687 INFO L514 BasicCegarLoop]: trace histogram [110, 110, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:45,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112
[2022-01-31 17:29:45,687 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:45,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:45,687 INFO L85 PathProgramCache]: Analyzing trace with hash -581216349, now seen corresponding path program 110 times
[2022-01-31 17:29:45,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:45,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086415164]
[2022-01-31 17:29:45,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:45,689 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:45,689 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:45,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:45,714 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:49,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:49,812 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:49,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086415164]
[2022-01-31 17:29:49,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1086415164] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:49,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:49,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [114] imperfect sequences [] total 114
[2022-01-31 17:29:49,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463674717]
[2022-01-31 17:29:49,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:49,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states
[2022-01-31 17:29:49,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:49,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants.
[2022-01-31 17:29:49,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882
[2022-01-31 17:29:49,816 INFO L87 Difference]: Start difference. First operand 286 states and 295 transitions. Second operand has 114 states, 114 states have (on average 2.289473684210526) internal successors, (261), 113 states have internal predecessors, (261), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:55,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:55,052 INFO L93 Difference]: Finished difference Result 348 states and 366 transitions.
[2022-01-31 17:29:55,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states.
[2022-01-31 17:29:55,053 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.289473684210526) internal successors, (261), 113 states have internal predecessors, (261), 2 states have call successors, (3), 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 281
[2022-01-31 17:29:55,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:55,054 INFO L225 Difference]: With dead ends: 348
[2022-01-31 17:29:55,054 INFO L226 Difference]: Without dead ends: 289
[2022-01-31 17:29:55,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6215 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=18984, Invalid=31416, Unknown=0, NotChecked=0, Total=50400
[2022-01-31 17:29:55,057 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 267 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:55,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 86 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:29:55,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states.
[2022-01-31 17:29:55,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 288.
[2022-01-31 17:29:55,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 282 states have (on average 1.0354609929078014) internal successors, (292), 282 states have internal predecessors, (292), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:29:55,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 297 transitions.
[2022-01-31 17:29:55,143 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 297 transitions. Word has length 281
[2022-01-31 17:29:55,143 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:55,143 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 297 transitions.
[2022-01-31 17:29:55,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 2.289473684210526) internal successors, (261), 113 states have internal predecessors, (261), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:55,143 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 297 transitions.
[2022-01-31 17:29:55,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284
[2022-01-31 17:29:55,144 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:55,144 INFO L514 BasicCegarLoop]: trace histogram [111, 111, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:55,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113
[2022-01-31 17:29:55,144 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:55,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:55,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1206570559, now seen corresponding path program 111 times
[2022-01-31 17:29:55,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:55,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805031874]
[2022-01-31 17:29:55,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:55,146 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:55,146 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:55,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:55,170 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:59,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:59,378 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:59,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805031874]
[2022-01-31 17:29:59,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [805031874] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:59,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:59,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [115] imperfect sequences [] total 115
[2022-01-31 17:29:59,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040837794]
[2022-01-31 17:29:59,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:59,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states
[2022-01-31 17:29:59,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:59,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants.
[2022-01-31 17:29:59,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110
[2022-01-31 17:29:59,382 INFO L87 Difference]: Start difference. First operand 288 states and 297 transitions. Second operand has 115 states, 115 states have (on average 2.2869565217391306) internal successors, (263), 114 states have internal predecessors, (263), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:04,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:04,393 INFO L93 Difference]: Finished difference Result 350 states and 368 transitions.
[2022-01-31 17:30:04,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states.
[2022-01-31 17:30:04,394 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.2869565217391306) internal successors, (263), 114 states have internal predecessors, (263), 2 states have call successors, (3), 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 283
[2022-01-31 17:30:04,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:04,394 INFO L225 Difference]: With dead ends: 350
[2022-01-31 17:30:04,394 INFO L226 Difference]: Without dead ends: 291
[2022-01-31 17:30:04,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6327 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302
[2022-01-31 17:30:04,398 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 269 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:04,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 81 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:30:04,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states.
[2022-01-31 17:30:04,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 290.
[2022-01-31 17:30:04,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 284 states have (on average 1.0352112676056338) internal successors, (294), 284 states have internal predecessors, (294), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:04,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 299 transitions.
[2022-01-31 17:30:04,492 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 299 transitions. Word has length 283
[2022-01-31 17:30:04,492 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:04,492 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 299 transitions.
[2022-01-31 17:30:04,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 2.2869565217391306) internal successors, (263), 114 states have internal predecessors, (263), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:04,492 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 299 transitions.
[2022-01-31 17:30:04,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286
[2022-01-31 17:30:04,493 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:04,493 INFO L514 BasicCegarLoop]: trace histogram [112, 112, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:04,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114
[2022-01-31 17:30:04,493 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:04,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:04,493 INFO L85 PathProgramCache]: Analyzing trace with hash -876544929, now seen corresponding path program 112 times
[2022-01-31 17:30:04,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:04,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562230343]
[2022-01-31 17:30:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:04,494 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:04,494 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:04,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:04,519 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:08,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:08,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:08,904 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:08,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562230343]
[2022-01-31 17:30:08,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [562230343] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:08,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:08,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [116] imperfect sequences [] total 116
[2022-01-31 17:30:08,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571043153]
[2022-01-31 17:30:08,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:08,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states
[2022-01-31 17:30:08,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:08,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants.
[2022-01-31 17:30:08,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6557, Invalid=6783, Unknown=0, NotChecked=0, Total=13340
[2022-01-31 17:30:08,907 INFO L87 Difference]: Start difference. First operand 290 states and 299 transitions. Second operand has 116 states, 116 states have (on average 2.2844827586206895) internal successors, (265), 115 states have internal predecessors, (265), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:14,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:14,283 INFO L93 Difference]: Finished difference Result 352 states and 370 transitions.
[2022-01-31 17:30:14,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states.
[2022-01-31 17:30:14,284 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 2.2844827586206895) internal successors, (265), 115 states have internal predecessors, (265), 2 states have call successors, (3), 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 285
[2022-01-31 17:30:14,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:14,284 INFO L225 Difference]: With dead ends: 352
[2022-01-31 17:30:14,285 INFO L226 Difference]: Without dead ends: 293
[2022-01-31 17:30:14,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6440 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=19665, Invalid=32547, Unknown=0, NotChecked=0, Total=52212
[2022-01-31 17:30:14,287 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 271 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:14,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 76 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:30:14,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states.
[2022-01-31 17:30:14,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 292.
[2022-01-31 17:30:14,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 286 states have (on average 1.034965034965035) internal successors, (296), 286 states have internal predecessors, (296), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:14,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 301 transitions.
[2022-01-31 17:30:14,375 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 301 transitions. Word has length 285
[2022-01-31 17:30:14,375 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:14,375 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 301 transitions.
[2022-01-31 17:30:14,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 2.2844827586206895) internal successors, (265), 115 states have internal predecessors, (265), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:14,375 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 301 transitions.
[2022-01-31 17:30:14,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288
[2022-01-31 17:30:14,376 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:14,376 INFO L514 BasicCegarLoop]: trace histogram [113, 113, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:14,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115
[2022-01-31 17:30:14,376 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:14,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:14,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1549494403, now seen corresponding path program 113 times
[2022-01-31 17:30:14,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:14,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418135577]
[2022-01-31 17:30:14,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:14,378 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:14,378 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:14,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:14,403 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:19,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:19,206 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:19,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418135577]
[2022-01-31 17:30:19,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1418135577] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:19,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:19,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [117] imperfect sequences [] total 117
[2022-01-31 17:30:19,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976258661]
[2022-01-31 17:30:19,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:19,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states
[2022-01-31 17:30:19,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:19,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants.
[2022-01-31 17:30:19,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572
[2022-01-31 17:30:19,211 INFO L87 Difference]: Start difference. First operand 292 states and 301 transitions. Second operand has 117 states, 117 states have (on average 2.282051282051282) internal successors, (267), 116 states have internal predecessors, (267), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:25,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:25,127 INFO L93 Difference]: Finished difference Result 354 states and 372 transitions.
[2022-01-31 17:30:25,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states.
[2022-01-31 17:30:25,127 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.282051282051282) internal successors, (267), 116 states have internal predecessors, (267), 2 states have call successors, (3), 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 287
[2022-01-31 17:30:25,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:25,128 INFO L225 Difference]: With dead ends: 354
[2022-01-31 17:30:25,128 INFO L226 Difference]: Without dead ends: 295
[2022-01-31 17:30:25,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6554 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=20010, Invalid=33120, Unknown=0, NotChecked=0, Total=53130
[2022-01-31 17:30:25,131 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 273 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:25,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 86 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 17:30:25,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states.
[2022-01-31 17:30:25,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 294.
[2022-01-31 17:30:25,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 288 states have (on average 1.0347222222222223) internal successors, (298), 288 states have internal predecessors, (298), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:25,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 303 transitions.
[2022-01-31 17:30:25,232 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 303 transitions. Word has length 287
[2022-01-31 17:30:25,232 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:25,232 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 303 transitions.
[2022-01-31 17:30:25,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 2.282051282051282) internal successors, (267), 116 states have internal predecessors, (267), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:25,233 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 303 transitions.
[2022-01-31 17:30:25,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290
[2022-01-31 17:30:25,233 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:25,234 INFO L514 BasicCegarLoop]: trace histogram [114, 114, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:25,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116
[2022-01-31 17:30:25,234 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:25,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:25,234 INFO L85 PathProgramCache]: Analyzing trace with hash 286122779, now seen corresponding path program 114 times
[2022-01-31 17:30:25,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:25,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236564991]
[2022-01-31 17:30:25,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:25,236 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:25,236 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:25,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:25,271 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:29,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:29,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:29,608 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:29,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236564991]
[2022-01-31 17:30:29,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [236564991] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:29,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:29,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [118] imperfect sequences [] total 118
[2022-01-31 17:30:29,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980663302]
[2022-01-31 17:30:29,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:29,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states
[2022-01-31 17:30:29,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:29,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants.
[2022-01-31 17:30:29,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806
[2022-01-31 17:30:29,611 INFO L87 Difference]: Start difference. First operand 294 states and 303 transitions. Second operand has 118 states, 118 states have (on average 2.2796610169491527) internal successors, (269), 117 states have internal predecessors, (269), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:34,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:34,827 INFO L93 Difference]: Finished difference Result 356 states and 374 transitions.
[2022-01-31 17:30:34,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states.
[2022-01-31 17:30:34,827 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.2796610169491527) internal successors, (269), 117 states have internal predecessors, (269), 2 states have call successors, (3), 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 289
[2022-01-31 17:30:34,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:34,828 INFO L225 Difference]: With dead ends: 356
[2022-01-31 17:30:34,828 INFO L226 Difference]: Without dead ends: 297
[2022-01-31 17:30:34,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6669 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=20358, Invalid=33698, Unknown=0, NotChecked=0, Total=54056
[2022-01-31 17:30:34,830 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 275 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:34,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 76 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:30:34,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states.
[2022-01-31 17:30:34,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 296.
[2022-01-31 17:30:34,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 290 states have (on average 1.0344827586206897) internal successors, (300), 290 states have internal predecessors, (300), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:34,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 305 transitions.
[2022-01-31 17:30:34,910 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 305 transitions. Word has length 289
[2022-01-31 17:30:34,910 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:34,910 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 305 transitions.
[2022-01-31 17:30:34,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 2.2796610169491527) internal successors, (269), 117 states have internal predecessors, (269), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:34,910 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 305 transitions.
[2022-01-31 17:30:34,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292
[2022-01-31 17:30:34,911 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:34,911 INFO L514 BasicCegarLoop]: trace histogram [115, 115, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:34,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117
[2022-01-31 17:30:34,911 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:34,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:34,912 INFO L85 PathProgramCache]: Analyzing trace with hash -917323975, now seen corresponding path program 115 times
[2022-01-31 17:30:34,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:34,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162468190]
[2022-01-31 17:30:34,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:34,913 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:34,913 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:34,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:34,941 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:35,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:39,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:39,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:39,647 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:39,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162468190]
[2022-01-31 17:30:39,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [162468190] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:39,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:39,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [119] imperfect sequences [] total 119
[2022-01-31 17:30:39,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003993075]
[2022-01-31 17:30:39,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:39,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states
[2022-01-31 17:30:39,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:39,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants.
[2022-01-31 17:30:39,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042
[2022-01-31 17:30:39,650 INFO L87 Difference]: Start difference. First operand 296 states and 305 transitions. Second operand has 119 states, 119 states have (on average 2.277310924369748) internal successors, (271), 118 states have internal predecessors, (271), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:45,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:45,387 INFO L93 Difference]: Finished difference Result 358 states and 376 transitions.
[2022-01-31 17:30:45,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states.
[2022-01-31 17:30:45,387 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.277310924369748) internal successors, (271), 118 states have internal predecessors, (271), 2 states have call successors, (3), 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 291
[2022-01-31 17:30:45,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:45,388 INFO L225 Difference]: With dead ends: 358
[2022-01-31 17:30:45,388 INFO L226 Difference]: Without dead ends: 299
[2022-01-31 17:30:45,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6785 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=20709, Invalid=34281, Unknown=0, NotChecked=0, Total=54990
[2022-01-31 17:30:45,391 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 277 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:45,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 81 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:30:45,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states.
[2022-01-31 17:30:45,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 298.
[2022-01-31 17:30:45,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 292 states have (on average 1.0342465753424657) internal successors, (302), 292 states have internal predecessors, (302), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:45,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 307 transitions.
[2022-01-31 17:30:45,490 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 307 transitions. Word has length 291
[2022-01-31 17:30:45,490 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:45,490 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 307 transitions.
[2022-01-31 17:30:45,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 2.277310924369748) internal successors, (271), 118 states have internal predecessors, (271), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:45,490 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 307 transitions.
[2022-01-31 17:30:45,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294
[2022-01-31 17:30:45,491 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:45,491 INFO L514 BasicCegarLoop]: trace histogram [116, 116, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:45,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118
[2022-01-31 17:30:45,491 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:45,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:45,491 INFO L85 PathProgramCache]: Analyzing trace with hash -2083451945, now seen corresponding path program 116 times
[2022-01-31 17:30:45,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:45,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084695442]
[2022-01-31 17:30:45,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:45,492 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:45,492 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:45,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:45,520 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:50,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:50,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:50,343 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:50,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084695442]
[2022-01-31 17:30:50,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1084695442] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:50,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:50,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [120] imperfect sequences [] total 120
[2022-01-31 17:30:50,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221698643]
[2022-01-31 17:30:50,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:50,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states
[2022-01-31 17:30:50,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:50,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants.
[2022-01-31 17:30:50,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7023, Invalid=7257, Unknown=0, NotChecked=0, Total=14280
[2022-01-31 17:30:50,346 INFO L87 Difference]: Start difference. First operand 298 states and 307 transitions. Second operand has 120 states, 120 states have (on average 2.275) internal successors, (273), 119 states have internal predecessors, (273), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:56,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:56,001 INFO L93 Difference]: Finished difference Result 360 states and 378 transitions.
[2022-01-31 17:30:56,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states.
[2022-01-31 17:30:56,001 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.275) internal successors, (273), 119 states have internal predecessors, (273), 2 states have call successors, (3), 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 293
[2022-01-31 17:30:56,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:56,002 INFO L225 Difference]: With dead ends: 360
[2022-01-31 17:30:56,002 INFO L226 Difference]: Without dead ends: 301
[2022-01-31 17:30:56,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6902 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=21063, Invalid=34869, Unknown=0, NotChecked=0, Total=55932
[2022-01-31 17:30:56,005 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 279 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:56,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 81 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:30:56,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states.
[2022-01-31 17:30:56,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 300.
[2022-01-31 17:30:56,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 294 states have (on average 1.034013605442177) internal successors, (304), 294 states have internal predecessors, (304), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:56,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 309 transitions.
[2022-01-31 17:30:56,129 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 309 transitions. Word has length 293
[2022-01-31 17:30:56,129 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:56,129 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 309 transitions.
[2022-01-31 17:30:56,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 2.275) internal successors, (273), 119 states have internal predecessors, (273), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:56,129 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 309 transitions.
[2022-01-31 17:30:56,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296
[2022-01-31 17:30:56,130 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:56,130 INFO L514 BasicCegarLoop]: trace histogram [117, 117, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:56,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119
[2022-01-31 17:30:56,130 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:56,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:56,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1745966859, now seen corresponding path program 117 times
[2022-01-31 17:30:56,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:56,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362918839]
[2022-01-31 17:30:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:56,132 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:56,132 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:56,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:56,171 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:01,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:01,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:01,182 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:01,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362918839]
[2022-01-31 17:31:01,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1362918839] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:01,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:01,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [121] imperfect sequences [] total 121
[2022-01-31 17:31:01,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293456049]
[2022-01-31 17:31:01,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:01,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states
[2022-01-31 17:31:01,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:01,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants.
[2022-01-31 17:31:01,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7142, Invalid=7378, Unknown=0, NotChecked=0, Total=14520
[2022-01-31 17:31:01,185 INFO L87 Difference]: Start difference. First operand 300 states and 309 transitions. Second operand has 121 states, 121 states have (on average 2.272727272727273) internal successors, (275), 120 states have internal predecessors, (275), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:06,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:06,731 INFO L93 Difference]: Finished difference Result 362 states and 380 transitions.
[2022-01-31 17:31:06,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states.
[2022-01-31 17:31:06,731 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 2.272727272727273) internal successors, (275), 120 states have internal predecessors, (275), 2 states have call successors, (3), 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 295
[2022-01-31 17:31:06,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:06,732 INFO L225 Difference]: With dead ends: 362
[2022-01-31 17:31:06,732 INFO L226 Difference]: Without dead ends: 303
[2022-01-31 17:31:06,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7020 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=21420, Invalid=35462, Unknown=0, NotChecked=0, Total=56882
[2022-01-31 17:31:06,735 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 281 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:06,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 96 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 17:31:06,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states.
[2022-01-31 17:31:06,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 302.
[2022-01-31 17:31:06,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 296 states have (on average 1.0337837837837838) internal successors, (306), 296 states have internal predecessors, (306), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:06,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 311 transitions.
[2022-01-31 17:31:06,838 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 311 transitions. Word has length 295
[2022-01-31 17:31:06,839 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:06,839 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 311 transitions.
[2022-01-31 17:31:06,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 2.272727272727273) internal successors, (275), 120 states have internal predecessors, (275), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:06,839 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 311 transitions.
[2022-01-31 17:31:06,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298
[2022-01-31 17:31:06,839 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:06,840 INFO L514 BasicCegarLoop]: trace histogram [118, 118, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:06,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120
[2022-01-31 17:31:06,840 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:06,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:06,840 INFO L85 PathProgramCache]: Analyzing trace with hash 454653587, now seen corresponding path program 118 times
[2022-01-31 17:31:06,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:06,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51233945]
[2022-01-31 17:31:06,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:06,841 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:06,841 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:06,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:06,871 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:11,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:11,483 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:11,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51233945]
[2022-01-31 17:31:11,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [51233945] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:11,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:11,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [122] imperfect sequences [] total 122
[2022-01-31 17:31:11,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71876425]
[2022-01-31 17:31:11,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:11,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states
[2022-01-31 17:31:11,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:11,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants.
[2022-01-31 17:31:11,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7262, Invalid=7500, Unknown=0, NotChecked=0, Total=14762
[2022-01-31 17:31:11,485 INFO L87 Difference]: Start difference. First operand 302 states and 311 transitions. Second operand has 122 states, 122 states have (on average 2.2704918032786887) internal successors, (277), 121 states have internal predecessors, (277), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:17,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:17,010 INFO L93 Difference]: Finished difference Result 364 states and 382 transitions.
[2022-01-31 17:31:17,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states.
[2022-01-31 17:31:17,010 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 2.2704918032786887) internal successors, (277), 121 states have internal predecessors, (277), 2 states have call successors, (3), 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 297
[2022-01-31 17:31:17,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:17,011 INFO L225 Difference]: With dead ends: 364
[2022-01-31 17:31:17,011 INFO L226 Difference]: Without dead ends: 305
[2022-01-31 17:31:17,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7139 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=21780, Invalid=36060, Unknown=0, NotChecked=0, Total=57840
[2022-01-31 17:31:17,015 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 283 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:17,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 71 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:31:17,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states.
[2022-01-31 17:31:17,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 304.
[2022-01-31 17:31:17,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 298 states have (on average 1.0335570469798658) internal successors, (308), 298 states have internal predecessors, (308), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:17,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 313 transitions.
[2022-01-31 17:31:17,119 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 313 transitions. Word has length 297
[2022-01-31 17:31:17,120 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:17,120 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 313 transitions.
[2022-01-31 17:31:17,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 2.2704918032786887) internal successors, (277), 121 states have internal predecessors, (277), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:17,120 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 313 transitions.
[2022-01-31 17:31:17,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300
[2022-01-31 17:31:17,120 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:17,121 INFO L514 BasicCegarLoop]: trace histogram [119, 119, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:17,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121
[2022-01-31 17:31:17,121 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:17,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:17,121 INFO L85 PathProgramCache]: Analyzing trace with hash 2126992561, now seen corresponding path program 119 times
[2022-01-31 17:31:17,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:17,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245082320]
[2022-01-31 17:31:17,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:17,122 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:17,122 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:17,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:17,152 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:21,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:21,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:21,842 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:21,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245082320]
[2022-01-31 17:31:21,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [245082320] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:21,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:21,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [123] imperfect sequences [] total 123
[2022-01-31 17:31:21,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24232159]
[2022-01-31 17:31:21,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:21,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states
[2022-01-31 17:31:21,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:21,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants.
[2022-01-31 17:31:21,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006
[2022-01-31 17:31:21,844 INFO L87 Difference]: Start difference. First operand 304 states and 313 transitions. Second operand has 123 states, 123 states have (on average 2.268292682926829) internal successors, (279), 122 states have internal predecessors, (279), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:27,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:27,515 INFO L93 Difference]: Finished difference Result 366 states and 384 transitions.
[2022-01-31 17:31:27,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states.
[2022-01-31 17:31:27,516 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 2.268292682926829) internal successors, (279), 122 states have internal predecessors, (279), 2 states have call successors, (3), 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 299
[2022-01-31 17:31:27,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:27,516 INFO L225 Difference]: With dead ends: 366
[2022-01-31 17:31:27,516 INFO L226 Difference]: Without dead ends: 307
[2022-01-31 17:31:27,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7259 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=22143, Invalid=36663, Unknown=0, NotChecked=0, Total=58806
[2022-01-31 17:31:27,518 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 285 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:27,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 96 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 17:31:27,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states.
[2022-01-31 17:31:27,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 306.
[2022-01-31 17:31:27,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 300 states have (on average 1.0333333333333334) internal successors, (310), 300 states have internal predecessors, (310), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:27,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 315 transitions.
[2022-01-31 17:31:27,605 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 315 transitions. Word has length 299
[2022-01-31 17:31:27,605 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:27,605 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 315 transitions.
[2022-01-31 17:31:27,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 2.268292682926829) internal successors, (279), 122 states have internal predecessors, (279), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:27,605 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 315 transitions.
[2022-01-31 17:31:27,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302
[2022-01-31 17:31:27,606 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:27,606 INFO L514 BasicCegarLoop]: trace histogram [120, 120, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:27,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122
[2022-01-31 17:31:27,606 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:27,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:27,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1367989425, now seen corresponding path program 120 times
[2022-01-31 17:31:27,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:27,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619058939]
[2022-01-31 17:31:27,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:27,607 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:27,608 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:27,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:27,637 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:32,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:32,386 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:32,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619058939]
[2022-01-31 17:31:32,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1619058939] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:32,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:32,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [124] imperfect sequences [] total 124
[2022-01-31 17:31:32,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079047231]
[2022-01-31 17:31:32,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:32,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states
[2022-01-31 17:31:32,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:32,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants.
[2022-01-31 17:31:32,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7505, Invalid=7747, Unknown=0, NotChecked=0, Total=15252
[2022-01-31 17:31:32,390 INFO L87 Difference]: Start difference. First operand 306 states and 315 transitions. Second operand has 124 states, 124 states have (on average 2.2661290322580645) internal successors, (281), 123 states have internal predecessors, (281), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:38,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:38,084 INFO L93 Difference]: Finished difference Result 368 states and 386 transitions.
[2022-01-31 17:31:38,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states.
[2022-01-31 17:31:38,085 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 2.2661290322580645) internal successors, (281), 123 states have internal predecessors, (281), 2 states have call successors, (3), 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 301
[2022-01-31 17:31:38,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:38,085 INFO L225 Difference]: With dead ends: 368
[2022-01-31 17:31:38,085 INFO L226 Difference]: Without dead ends: 309
[2022-01-31 17:31:38,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7380 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=22509, Invalid=37271, Unknown=0, NotChecked=0, Total=59780
[2022-01-31 17:31:38,090 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 287 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:38,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 76 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:31:38,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states.
[2022-01-31 17:31:38,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 308.
[2022-01-31 17:31:38,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 302 states have (on average 1.033112582781457) internal successors, (312), 302 states have internal predecessors, (312), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:38,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 317 transitions.
[2022-01-31 17:31:38,194 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 317 transitions. Word has length 301
[2022-01-31 17:31:38,194 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:38,194 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 317 transitions.
[2022-01-31 17:31:38,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 2.2661290322580645) internal successors, (281), 123 states have internal predecessors, (281), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:38,194 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 317 transitions.
[2022-01-31 17:31:38,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304
[2022-01-31 17:31:38,195 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:38,195 INFO L514 BasicCegarLoop]: trace histogram [121, 121, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:38,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123
[2022-01-31 17:31:38,195 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:38,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:38,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1381252499, now seen corresponding path program 121 times
[2022-01-31 17:31:38,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:38,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929140666]
[2022-01-31 17:31:38,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:38,196 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:38,197 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:38,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:38,225 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:43,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:43,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:43,065 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:43,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929140666]
[2022-01-31 17:31:43,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [929140666] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:43,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:43,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [125] imperfect sequences [] total 125
[2022-01-31 17:31:43,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425779445]
[2022-01-31 17:31:43,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:43,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states
[2022-01-31 17:31:43,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:43,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants.
[2022-01-31 17:31:43,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7628, Invalid=7872, Unknown=0, NotChecked=0, Total=15500
[2022-01-31 17:31:43,069 INFO L87 Difference]: Start difference. First operand 308 states and 317 transitions. Second operand has 125 states, 125 states have (on average 2.264) internal successors, (283), 124 states have internal predecessors, (283), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:48,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:48,847 INFO L93 Difference]: Finished difference Result 370 states and 388 transitions.
[2022-01-31 17:31:48,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states.
[2022-01-31 17:31:48,847 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 2.264) internal successors, (283), 124 states have internal predecessors, (283), 2 states have call successors, (3), 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 303
[2022-01-31 17:31:48,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:48,848 INFO L225 Difference]: With dead ends: 370
[2022-01-31 17:31:48,848 INFO L226 Difference]: Without dead ends: 311
[2022-01-31 17:31:48,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7502 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=22878, Invalid=37884, Unknown=0, NotChecked=0, Total=60762
[2022-01-31 17:31:48,851 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 289 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:48,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 71 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:31:48,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states.
[2022-01-31 17:31:48,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 310.
[2022-01-31 17:31:48,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 304 states have (on average 1.0328947368421053) internal successors, (314), 304 states have internal predecessors, (314), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:48,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 319 transitions.
[2022-01-31 17:31:48,941 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 319 transitions. Word has length 303
[2022-01-31 17:31:48,941 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:48,941 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 319 transitions.
[2022-01-31 17:31:48,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 2.264) internal successors, (283), 124 states have internal predecessors, (283), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:48,941 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 319 transitions.
[2022-01-31 17:31:48,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306
[2022-01-31 17:31:48,942 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:48,942 INFO L514 BasicCegarLoop]: trace histogram [122, 122, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:48,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124
[2022-01-31 17:31:48,942 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:48,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:48,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1242164725, now seen corresponding path program 122 times
[2022-01-31 17:31:48,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:48,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051385661]
[2022-01-31 17:31:48,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:48,944 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:48,944 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:48,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:48,974 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:53,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:53,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:53,898 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:53,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051385661]
[2022-01-31 17:31:53,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1051385661] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:53,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:53,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [126] imperfect sequences [] total 126
[2022-01-31 17:31:53,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140229888]
[2022-01-31 17:31:53,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:53,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states
[2022-01-31 17:31:53,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:53,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants.
[2022-01-31 17:31:53,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7752, Invalid=7998, Unknown=0, NotChecked=0, Total=15750
[2022-01-31 17:31:53,900 INFO L87 Difference]: Start difference. First operand 310 states and 319 transitions. Second operand has 126 states, 126 states have (on average 2.261904761904762) internal successors, (285), 125 states have internal predecessors, (285), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:59,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:59,770 INFO L93 Difference]: Finished difference Result 372 states and 390 transitions.
[2022-01-31 17:31:59,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states.
[2022-01-31 17:31:59,771 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 2.261904761904762) internal successors, (285), 125 states have internal predecessors, (285), 2 states have call successors, (3), 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 305
[2022-01-31 17:31:59,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:59,771 INFO L225 Difference]: With dead ends: 372
[2022-01-31 17:31:59,771 INFO L226 Difference]: Without dead ends: 313
[2022-01-31 17:31:59,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7625 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=23250, Invalid=38502, Unknown=0, NotChecked=0, Total=61752
[2022-01-31 17:31:59,775 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 291 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:59,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 81 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:31:59,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states.
[2022-01-31 17:31:59,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 312.
[2022-01-31 17:31:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 306 states have (on average 1.0326797385620916) internal successors, (316), 306 states have internal predecessors, (316), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:59,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 321 transitions.
[2022-01-31 17:31:59,889 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 321 transitions. Word has length 305
[2022-01-31 17:31:59,889 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:59,890 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 321 transitions.
[2022-01-31 17:31:59,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 2.261904761904762) internal successors, (285), 125 states have internal predecessors, (285), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:59,890 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 321 transitions.
[2022-01-31 17:31:59,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308
[2022-01-31 17:31:59,890 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:59,890 INFO L514 BasicCegarLoop]: trace histogram [123, 123, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:59,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125
[2022-01-31 17:31:59,891 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:59,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:59,891 INFO L85 PathProgramCache]: Analyzing trace with hash -722800087, now seen corresponding path program 123 times
[2022-01-31 17:31:59,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:59,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651773389]
[2022-01-31 17:31:59,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:59,892 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:59,892 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:59,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:59,923 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:04,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:04,892 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:04,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651773389]
[2022-01-31 17:32:04,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1651773389] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:04,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:04,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [127] imperfect sequences [] total 127
[2022-01-31 17:32:04,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672585370]
[2022-01-31 17:32:04,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:04,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states
[2022-01-31 17:32:04,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:04,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants.
[2022-01-31 17:32:04,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002
[2022-01-31 17:32:04,895 INFO L87 Difference]: Start difference. First operand 312 states and 321 transitions. Second operand has 127 states, 127 states have (on average 2.2598425196850394) internal successors, (287), 126 states have internal predecessors, (287), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:10,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:10,867 INFO L93 Difference]: Finished difference Result 374 states and 392 transitions.
[2022-01-31 17:32:10,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states.
[2022-01-31 17:32:10,867 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 127 states have (on average 2.2598425196850394) internal successors, (287), 126 states have internal predecessors, (287), 2 states have call successors, (3), 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 307
[2022-01-31 17:32:10,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:10,868 INFO L225 Difference]: With dead ends: 374
[2022-01-31 17:32:10,868 INFO L226 Difference]: Without dead ends: 315
[2022-01-31 17:32:10,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7749 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=23625, Invalid=39125, Unknown=0, NotChecked=0, Total=62750
[2022-01-31 17:32:10,871 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 293 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:10,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 86 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:32:10,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states.
[2022-01-31 17:32:10,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 314.
[2022-01-31 17:32:10,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 308 states have (on average 1.0324675324675325) internal successors, (318), 308 states have internal predecessors, (318), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:10,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 323 transitions.
[2022-01-31 17:32:10,963 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 323 transitions. Word has length 307
[2022-01-31 17:32:10,964 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:10,964 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 323 transitions.
[2022-01-31 17:32:10,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 127 states have (on average 2.2598425196850394) internal successors, (287), 126 states have internal predecessors, (287), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:10,964 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 323 transitions.
[2022-01-31 17:32:10,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310
[2022-01-31 17:32:10,965 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:10,965 INFO L514 BasicCegarLoop]: trace histogram [124, 124, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:10,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126
[2022-01-31 17:32:10,965 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:10,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:10,965 INFO L85 PathProgramCache]: Analyzing trace with hash 170410695, now seen corresponding path program 124 times
[2022-01-31 17:32:10,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:10,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060255644]
[2022-01-31 17:32:10,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:10,967 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:10,967 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:10,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:10,997 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:16,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:16,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:16,083 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:16,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060255644]
[2022-01-31 17:32:16,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1060255644] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:16,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:16,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [128] imperfect sequences [] total 128
[2022-01-31 17:32:16,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59071889]
[2022-01-31 17:32:16,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:16,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states
[2022-01-31 17:32:16,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:16,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants.
[2022-01-31 17:32:16,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8003, Invalid=8253, Unknown=0, NotChecked=0, Total=16256
[2022-01-31 17:32:16,086 INFO L87 Difference]: Start difference. First operand 314 states and 323 transitions. Second operand has 128 states, 128 states have (on average 2.2578125) internal successors, (289), 127 states have internal predecessors, (289), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:22,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:22,158 INFO L93 Difference]: Finished difference Result 376 states and 394 transitions.
[2022-01-31 17:32:22,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states.
[2022-01-31 17:32:22,158 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.2578125) internal successors, (289), 127 states have internal predecessors, (289), 2 states have call successors, (3), 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 309
[2022-01-31 17:32:22,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:22,159 INFO L225 Difference]: With dead ends: 376
[2022-01-31 17:32:22,159 INFO L226 Difference]: Without dead ends: 317
[2022-01-31 17:32:22,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7874 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=24003, Invalid=39753, Unknown=0, NotChecked=0, Total=63756
[2022-01-31 17:32:22,162 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 295 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:22,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 86 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 17:32:22,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states.
[2022-01-31 17:32:22,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 316.
[2022-01-31 17:32:22,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 310 states have (on average 1.032258064516129) internal successors, (320), 310 states have internal predecessors, (320), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:22,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 325 transitions.
[2022-01-31 17:32:22,257 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 325 transitions. Word has length 309
[2022-01-31 17:32:22,258 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:22,258 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 325 transitions.
[2022-01-31 17:32:22,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.2578125) internal successors, (289), 127 states have internal predecessors, (289), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:22,258 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 325 transitions.
[2022-01-31 17:32:22,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312
[2022-01-31 17:32:22,259 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:22,259 INFO L514 BasicCegarLoop]: trace histogram [125, 125, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:22,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127
[2022-01-31 17:32:22,259 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:22,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:22,259 INFO L85 PathProgramCache]: Analyzing trace with hash -447487003, now seen corresponding path program 125 times
[2022-01-31 17:32:22,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:22,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777384576]
[2022-01-31 17:32:22,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:22,261 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:22,261 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:22,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:22,290 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:27,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:27,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:27,388 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:27,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777384576]
[2022-01-31 17:32:27,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1777384576] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:27,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:27,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [129] imperfect sequences [] total 129
[2022-01-31 17:32:27,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215924542]
[2022-01-31 17:32:27,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:27,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 129 states
[2022-01-31 17:32:27,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:27,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants.
[2022-01-31 17:32:27,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8130, Invalid=8382, Unknown=0, NotChecked=0, Total=16512
[2022-01-31 17:32:27,392 INFO L87 Difference]: Start difference. First operand 316 states and 325 transitions. Second operand has 129 states, 129 states have (on average 2.255813953488372) internal successors, (291), 128 states have internal predecessors, (291), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:33,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:33,534 INFO L93 Difference]: Finished difference Result 378 states and 396 transitions.
[2022-01-31 17:32:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states.
[2022-01-31 17:32:33,534 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 2.255813953488372) internal successors, (291), 128 states have internal predecessors, (291), 2 states have call successors, (3), 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 311
[2022-01-31 17:32:33,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:33,535 INFO L225 Difference]: With dead ends: 378
[2022-01-31 17:32:33,535 INFO L226 Difference]: Without dead ends: 319
[2022-01-31 17:32:33,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8000 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=24384, Invalid=40386, Unknown=0, NotChecked=0, Total=64770
[2022-01-31 17:32:33,539 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 297 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:33,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 71 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:32:33,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states.
[2022-01-31 17:32:33,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 318.
[2022-01-31 17:32:33,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 312 states have (on average 1.0320512820512822) internal successors, (322), 312 states have internal predecessors, (322), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:33,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 327 transitions.
[2022-01-31 17:32:33,705 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 327 transitions. Word has length 311
[2022-01-31 17:32:33,705 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:33,705 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 327 transitions.
[2022-01-31 17:32:33,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 2.255813953488372) internal successors, (291), 128 states have internal predecessors, (291), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:33,705 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 327 transitions.
[2022-01-31 17:32:33,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314
[2022-01-31 17:32:33,706 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:33,706 INFO L514 BasicCegarLoop]: trace histogram [126, 126, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:33,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128
[2022-01-31 17:32:33,706 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:33,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:33,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1541687933, now seen corresponding path program 126 times
[2022-01-31 17:32:33,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:33,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632350617]
[2022-01-31 17:32:33,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:33,709 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:33,709 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:33,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:33,754 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:38,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:38,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:38,928 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:38,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632350617]
[2022-01-31 17:32:38,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1632350617] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:38,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:38,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [130] imperfect sequences [] total 130
[2022-01-31 17:32:38,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510392067]
[2022-01-31 17:32:38,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:38,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states
[2022-01-31 17:32:38,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:38,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants.
[2022-01-31 17:32:38,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8258, Invalid=8512, Unknown=0, NotChecked=0, Total=16770
[2022-01-31 17:32:38,931 INFO L87 Difference]: Start difference. First operand 318 states and 327 transitions. Second operand has 130 states, 130 states have (on average 2.253846153846154) internal successors, (293), 129 states have internal predecessors, (293), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:45,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:45,156 INFO L93 Difference]: Finished difference Result 380 states and 398 transitions.
[2022-01-31 17:32:45,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states.
[2022-01-31 17:32:45,156 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.253846153846154) internal successors, (293), 129 states have internal predecessors, (293), 2 states have call successors, (3), 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 313
[2022-01-31 17:32:45,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:45,157 INFO L225 Difference]: With dead ends: 380
[2022-01-31 17:32:45,157 INFO L226 Difference]: Without dead ends: 321
[2022-01-31 17:32:45,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8127 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=24768, Invalid=41024, Unknown=0, NotChecked=0, Total=65792
[2022-01-31 17:32:45,160 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 299 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:45,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 71 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:32:45,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states.
[2022-01-31 17:32:45,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 320.
[2022-01-31 17:32:45,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 314 states have (on average 1.0318471337579618) internal successors, (324), 314 states have internal predecessors, (324), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:45,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 329 transitions.
[2022-01-31 17:32:45,276 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 329 transitions. Word has length 313
[2022-01-31 17:32:45,276 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:45,276 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 329 transitions.
[2022-01-31 17:32:45,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.253846153846154) internal successors, (293), 129 states have internal predecessors, (293), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:45,276 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 329 transitions.
[2022-01-31 17:32:45,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316
[2022-01-31 17:32:45,277 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:45,277 INFO L514 BasicCegarLoop]: trace histogram [127, 127, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:45,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129
[2022-01-31 17:32:45,277 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:45,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:45,277 INFO L85 PathProgramCache]: Analyzing trace with hash -801794143, now seen corresponding path program 127 times
[2022-01-31 17:32:45,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:45,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313136195]
[2022-01-31 17:32:45,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:45,279 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:45,279 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:45,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:45,310 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:50,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:50,570 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:50,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313136195]
[2022-01-31 17:32:50,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [313136195] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:50,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:50,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [131] imperfect sequences [] total 131
[2022-01-31 17:32:50,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711169867]
[2022-01-31 17:32:50,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:50,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states
[2022-01-31 17:32:50,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:50,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants.
[2022-01-31 17:32:50,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030
[2022-01-31 17:32:50,574 INFO L87 Difference]: Start difference. First operand 320 states and 329 transitions. Second operand has 131 states, 131 states have (on average 2.2519083969465647) internal successors, (295), 130 states have internal predecessors, (295), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:56,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:56,911 INFO L93 Difference]: Finished difference Result 382 states and 400 transitions.
[2022-01-31 17:32:56,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states.
[2022-01-31 17:32:56,911 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.2519083969465647) internal successors, (295), 130 states have internal predecessors, (295), 2 states have call successors, (3), 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 315
[2022-01-31 17:32:56,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:56,912 INFO L225 Difference]: With dead ends: 382
[2022-01-31 17:32:56,912 INFO L226 Difference]: Without dead ends: 323
[2022-01-31 17:32:56,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8255 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=25155, Invalid=41667, Unknown=0, NotChecked=0, Total=66822
[2022-01-31 17:32:56,916 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 301 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:56,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 76 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:32:56,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states.
[2022-01-31 17:32:57,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 322.
[2022-01-31 17:32:57,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 316 states have (on average 1.0316455696202531) internal successors, (326), 316 states have internal predecessors, (326), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:57,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 331 transitions.
[2022-01-31 17:32:57,033 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 331 transitions. Word has length 315
[2022-01-31 17:32:57,033 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:57,033 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 331 transitions.
[2022-01-31 17:32:57,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 2.2519083969465647) internal successors, (295), 130 states have internal predecessors, (295), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:57,033 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 331 transitions.
[2022-01-31 17:32:57,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318
[2022-01-31 17:32:57,034 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:57,034 INFO L514 BasicCegarLoop]: trace histogram [128, 128, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:57,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130
[2022-01-31 17:32:57,034 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:57,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:57,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1566534207, now seen corresponding path program 128 times
[2022-01-31 17:32:57,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:57,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98251689]
[2022-01-31 17:32:57,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:57,036 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:57,036 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:57,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:57,066 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:02,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:33:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:02,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:33:02,406 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:33:02,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98251689]
[2022-01-31 17:33:02,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [98251689] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:33:02,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:33:02,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [132] imperfect sequences [] total 132
[2022-01-31 17:33:02,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104845220]
[2022-01-31 17:33:02,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:33:02,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states
[2022-01-31 17:33:02,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:33:02,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants.
[2022-01-31 17:33:02,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8517, Invalid=8775, Unknown=0, NotChecked=0, Total=17292
[2022-01-31 17:33:02,409 INFO L87 Difference]: Start difference. First operand 322 states and 331 transitions. Second operand has 132 states, 132 states have (on average 2.25) internal successors, (297), 131 states have internal predecessors, (297), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:08,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:08,892 INFO L93 Difference]: Finished difference Result 384 states and 402 transitions.
[2022-01-31 17:33:08,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states.
[2022-01-31 17:33:08,892 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 2.25) internal successors, (297), 131 states have internal predecessors, (297), 2 states have call successors, (3), 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 317
[2022-01-31 17:33:08,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:08,893 INFO L225 Difference]: With dead ends: 384
[2022-01-31 17:33:08,893 INFO L226 Difference]: Without dead ends: 325
[2022-01-31 17:33:08,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8384 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=25545, Invalid=42315, Unknown=0, NotChecked=0, Total=67860
[2022-01-31 17:33:08,896 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 303 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:08,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 91 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 17:33:08,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states.
[2022-01-31 17:33:08,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 324.
[2022-01-31 17:33:08,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 318 states have (on average 1.0314465408805031) internal successors, (328), 318 states have internal predecessors, (328), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:08,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 333 transitions.
[2022-01-31 17:33:08,995 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 333 transitions. Word has length 317
[2022-01-31 17:33:08,995 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:08,995 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 333 transitions.
[2022-01-31 17:33:08,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 2.25) internal successors, (297), 131 states have internal predecessors, (297), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:08,995 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 333 transitions.
[2022-01-31 17:33:08,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320
[2022-01-31 17:33:08,996 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:08,996 INFO L514 BasicCegarLoop]: trace histogram [129, 129, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:08,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131
[2022-01-31 17:33:08,996 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:08,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:08,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1197411677, now seen corresponding path program 129 times
[2022-01-31 17:33:08,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:08,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125063989]
[2022-01-31 17:33:08,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:08,997 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:08,997 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:08,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:09,028 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:14,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:33:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:14,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:33:14,516 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:33:14,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125063989]
[2022-01-31 17:33:14,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [125063989] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:33:14,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:33:14,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [133] imperfect sequences [] total 133
[2022-01-31 17:33:14,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117040148]
[2022-01-31 17:33:14,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:33:14,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 133 states
[2022-01-31 17:33:14,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:33:14,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants.
[2022-01-31 17:33:14,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8648, Invalid=8908, Unknown=0, NotChecked=0, Total=17556
[2022-01-31 17:33:14,519 INFO L87 Difference]: Start difference. First operand 324 states and 333 transitions. Second operand has 133 states, 133 states have (on average 2.2481203007518795) internal successors, (299), 132 states have internal predecessors, (299), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:21,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:21,046 INFO L93 Difference]: Finished difference Result 386 states and 404 transitions.
[2022-01-31 17:33:21,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states.
[2022-01-31 17:33:21,046 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 2.2481203007518795) internal successors, (299), 132 states have internal predecessors, (299), 2 states have call successors, (3), 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 319
[2022-01-31 17:33:21,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:21,047 INFO L225 Difference]: With dead ends: 386
[2022-01-31 17:33:21,047 INFO L226 Difference]: Without dead ends: 327
[2022-01-31 17:33:21,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8514 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=25938, Invalid=42968, Unknown=0, NotChecked=0, Total=68906
[2022-01-31 17:33:21,050 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 305 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:21,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 76 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:33:21,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states.
[2022-01-31 17:33:21,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 326.
[2022-01-31 17:33:21,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 320 states have (on average 1.03125) internal successors, (330), 320 states have internal predecessors, (330), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:21,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 335 transitions.
[2022-01-31 17:33:21,151 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 335 transitions. Word has length 319
[2022-01-31 17:33:21,151 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:21,152 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 335 transitions.
[2022-01-31 17:33:21,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 2.2481203007518795) internal successors, (299), 132 states have internal predecessors, (299), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:21,152 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 335 transitions.
[2022-01-31 17:33:21,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322
[2022-01-31 17:33:21,152 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:21,153 INFO L514 BasicCegarLoop]: trace histogram [130, 130, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:21,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132
[2022-01-31 17:33:21,153 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:21,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:21,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1342021381, now seen corresponding path program 130 times
[2022-01-31 17:33:21,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:21,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484221005]
[2022-01-31 17:33:21,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:21,154 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:21,154 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:21,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:21,202 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:26,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:33:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:26,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:33:26,764 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:33:26,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484221005]
[2022-01-31 17:33:26,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [484221005] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:33:26,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:33:26,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [134] imperfect sequences [] total 134
[2022-01-31 17:33:26,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989648687]
[2022-01-31 17:33:26,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:33:26,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 134 states
[2022-01-31 17:33:26,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:33:26,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants.
[2022-01-31 17:33:26,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8780, Invalid=9042, Unknown=0, NotChecked=0, Total=17822
[2022-01-31 17:33:26,767 INFO L87 Difference]: Start difference. First operand 326 states and 335 transitions. Second operand has 134 states, 134 states have (on average 2.246268656716418) internal successors, (301), 133 states have internal predecessors, (301), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:33,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:33,352 INFO L93 Difference]: Finished difference Result 388 states and 406 transitions.
[2022-01-31 17:33:33,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states.
[2022-01-31 17:33:33,352 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 2.246268656716418) internal successors, (301), 133 states have internal predecessors, (301), 2 states have call successors, (3), 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 321
[2022-01-31 17:33:33,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:33,353 INFO L225 Difference]: With dead ends: 388
[2022-01-31 17:33:33,353 INFO L226 Difference]: Without dead ends: 329
[2022-01-31 17:33:33,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8645 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=26334, Invalid=43626, Unknown=0, NotChecked=0, Total=69960
[2022-01-31 17:33:33,355 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 307 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:33,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 66 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:33:33,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states.
[2022-01-31 17:33:33,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 328.
[2022-01-31 17:33:33,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 322 states have (on average 1.031055900621118) internal successors, (332), 322 states have internal predecessors, (332), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 337 transitions.
[2022-01-31 17:33:33,458 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 337 transitions. Word has length 321
[2022-01-31 17:33:33,458 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:33,458 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 337 transitions.
[2022-01-31 17:33:33,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 2.246268656716418) internal successors, (301), 133 states have internal predecessors, (301), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:33,458 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 337 transitions.
[2022-01-31 17:33:33,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324
[2022-01-31 17:33:33,459 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:33,459 INFO L514 BasicCegarLoop]: trace histogram [131, 131, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:33,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133
[2022-01-31 17:33:33,460 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:33,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:33,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2099201305, now seen corresponding path program 131 times
[2022-01-31 17:33:33,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:33,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201197809]
[2022-01-31 17:33:33,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:33,461 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:33,461 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:33,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:33,493 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:39,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:33:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:39,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:33:39,177 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:33:39,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201197809]
[2022-01-31 17:33:39,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [201197809] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:33:39,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:33:39,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [135] imperfect sequences [] total 135
[2022-01-31 17:33:39,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391890400]
[2022-01-31 17:33:39,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:33:39,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 135 states
[2022-01-31 17:33:39,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:33:39,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants.
[2022-01-31 17:33:39,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090
[2022-01-31 17:33:39,180 INFO L87 Difference]: Start difference. First operand 328 states and 337 transitions. Second operand has 135 states, 135 states have (on average 2.2444444444444445) internal successors, (303), 134 states have internal predecessors, (303), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:45,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:45,835 INFO L93 Difference]: Finished difference Result 390 states and 408 transitions.
[2022-01-31 17:33:45,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states.
[2022-01-31 17:33:45,836 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 2.2444444444444445) internal successors, (303), 134 states have internal predecessors, (303), 2 states have call successors, (3), 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 323
[2022-01-31 17:33:45,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:45,836 INFO L225 Difference]: With dead ends: 390
[2022-01-31 17:33:45,836 INFO L226 Difference]: Without dead ends: 331
[2022-01-31 17:33:45,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8777 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=26733, Invalid=44289, Unknown=0, NotChecked=0, Total=71022
[2022-01-31 17:33:45,839 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 309 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:45,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 66 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:33:45,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states.
[2022-01-31 17:33:45,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 330.
[2022-01-31 17:33:45,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 324 states have (on average 1.0308641975308641) internal successors, (334), 324 states have internal predecessors, (334), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:45,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 339 transitions.
[2022-01-31 17:33:45,943 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 339 transitions. Word has length 323
[2022-01-31 17:33:45,943 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:45,943 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 339 transitions.
[2022-01-31 17:33:45,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 135 states have (on average 2.2444444444444445) internal successors, (303), 134 states have internal predecessors, (303), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:45,943 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 339 transitions.
[2022-01-31 17:33:45,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326
[2022-01-31 17:33:45,944 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:45,944 INFO L514 BasicCegarLoop]: trace histogram [132, 132, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:45,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134
[2022-01-31 17:33:45,944 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:45,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:45,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1989384631, now seen corresponding path program 132 times
[2022-01-31 17:33:45,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:45,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128324704]
[2022-01-31 17:33:45,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:45,946 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:45,946 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:45,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:45,978 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:51,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:33:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:33:51,665 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:33:51,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128324704]
[2022-01-31 17:33:51,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [128324704] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:33:51,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:33:51,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [136] imperfect sequences [] total 136
[2022-01-31 17:33:51,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631195406]
[2022-01-31 17:33:51,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:33:51,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 136 states
[2022-01-31 17:33:51,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:33:51,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants.
[2022-01-31 17:33:51,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9047, Invalid=9313, Unknown=0, NotChecked=0, Total=18360
[2022-01-31 17:33:51,669 INFO L87 Difference]: Start difference. First operand 330 states and 339 transitions. Second operand has 136 states, 136 states have (on average 2.2426470588235294) internal successors, (305), 135 states have internal predecessors, (305), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:58,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:58,561 INFO L93 Difference]: Finished difference Result 392 states and 410 transitions.
[2022-01-31 17:33:58,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states.
[2022-01-31 17:33:58,561 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 2.2426470588235294) internal successors, (305), 135 states have internal predecessors, (305), 2 states have call successors, (3), 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 325
[2022-01-31 17:33:58,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:58,562 INFO L225 Difference]: With dead ends: 392
[2022-01-31 17:33:58,562 INFO L226 Difference]: Without dead ends: 333
[2022-01-31 17:33:58,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8910 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=27135, Invalid=44957, Unknown=0, NotChecked=0, Total=72092
[2022-01-31 17:33:58,565 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 311 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:58,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 71 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:33:58,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states.
[2022-01-31 17:33:58,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 332.
[2022-01-31 17:33:58,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 326 states have (on average 1.030674846625767) internal successors, (336), 326 states have internal predecessors, (336), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:58,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 341 transitions.
[2022-01-31 17:33:58,672 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 341 transitions. Word has length 325
[2022-01-31 17:33:58,672 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:58,672 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 341 transitions.
[2022-01-31 17:33:58,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 136 states have (on average 2.2426470588235294) internal successors, (305), 135 states have internal predecessors, (305), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:58,672 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 341 transitions.
[2022-01-31 17:33:58,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328
[2022-01-31 17:33:58,673 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:58,673 INFO L514 BasicCegarLoop]: trace histogram [133, 133, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:58,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135
[2022-01-31 17:33:58,673 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:58,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:58,673 INFO L85 PathProgramCache]: Analyzing trace with hash -465223979, now seen corresponding path program 133 times
[2022-01-31 17:33:58,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:58,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166480723]
[2022-01-31 17:33:58,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:58,675 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:58,675 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:58,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:58,707 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:04,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:34:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:34:04,472 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:34:04,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166480723]
[2022-01-31 17:34:04,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [166480723] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:34:04,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:34:04,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [137] imperfect sequences [] total 137
[2022-01-31 17:34:04,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987342673]
[2022-01-31 17:34:04,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:34:04,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 137 states
[2022-01-31 17:34:04,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:34:04,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants.
[2022-01-31 17:34:04,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9182, Invalid=9450, Unknown=0, NotChecked=0, Total=18632
[2022-01-31 17:34:04,474 INFO L87 Difference]: Start difference. First operand 332 states and 341 transitions. Second operand has 137 states, 137 states have (on average 2.240875912408759) internal successors, (307), 136 states have internal predecessors, (307), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:11,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:34:11,390 INFO L93 Difference]: Finished difference Result 394 states and 412 transitions.
[2022-01-31 17:34:11,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states.
[2022-01-31 17:34:11,391 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 2.240875912408759) internal successors, (307), 136 states have internal predecessors, (307), 2 states have call successors, (3), 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 327
[2022-01-31 17:34:11,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:34:11,391 INFO L225 Difference]: With dead ends: 394
[2022-01-31 17:34:11,391 INFO L226 Difference]: Without dead ends: 335
[2022-01-31 17:34:11,394 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
[2022-01-31 17:34:11,394 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 313 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:34:11,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 81 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:34:11,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states.
[2022-01-31 17:34:11,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 334.
[2022-01-31 17:34:11,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 328 states have (on average 1.0304878048780488) internal successors, (338), 328 states have internal predecessors, (338), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:34:11,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 343 transitions.
[2022-01-31 17:34:11,501 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 343 transitions. Word has length 327
[2022-01-31 17:34:11,501 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:34:11,501 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 343 transitions.
[2022-01-31 17:34:11,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 2.240875912408759) internal successors, (307), 136 states have internal predecessors, (307), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:11,501 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 343 transitions.
[2022-01-31 17:34:11,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330
[2022-01-31 17:34:11,502 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:34:11,502 INFO L514 BasicCegarLoop]: trace histogram [134, 134, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:34:11,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136
[2022-01-31 17:34:11,502 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:34:11,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:34:11,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1407052685, now seen corresponding path program 134 times
[2022-01-31 17:34:11,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:34:11,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589013758]
[2022-01-31 17:34:11,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:34:11,504 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:34:11,504 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:34:11,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:34:11,541 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:34:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:17,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:34:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:34:17,432 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:34:17,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589013758]
[2022-01-31 17:34:17,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1589013758] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:34:17,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:34:17,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [138] imperfect sequences [] total 138
[2022-01-31 17:34:17,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761972391]
[2022-01-31 17:34:17,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:34:17,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 138 states
[2022-01-31 17:34:17,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:34:17,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants.
[2022-01-31 17:34:17,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9318, Invalid=9588, Unknown=0, NotChecked=0, Total=18906
[2022-01-31 17:34:17,435 INFO L87 Difference]: Start difference. First operand 334 states and 343 transitions. Second operand has 138 states, 138 states have (on average 2.239130434782609) internal successors, (309), 137 states have internal predecessors, (309), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:24,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:34:24,425 INFO L93 Difference]: Finished difference Result 396 states and 414 transitions.
[2022-01-31 17:34:24,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states.
[2022-01-31 17:34:24,426 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 138 states have (on average 2.239130434782609) internal successors, (309), 137 states have internal predecessors, (309), 2 states have call successors, (3), 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 329
[2022-01-31 17:34:24,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:34:24,426 INFO L225 Difference]: With dead ends: 396
[2022-01-31 17:34:24,426 INFO L226 Difference]: Without dead ends: 337
[2022-01-31 17:34:24,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9179 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=27948, Invalid=46308, Unknown=0, NotChecked=0, Total=74256
[2022-01-31 17:34:24,429 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 315 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 17:34:24,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 76 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 17:34:24,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states.
[2022-01-31 17:34:24,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 336.
[2022-01-31 17:34:24,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 330 states have (on average 1.0303030303030303) internal successors, (340), 330 states have internal predecessors, (340), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:34:24,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 345 transitions.
[2022-01-31 17:34:24,538 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 345 transitions. Word has length 329
[2022-01-31 17:34:24,539 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:34:24,539 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 345 transitions.
[2022-01-31 17:34:24,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 138 states have (on average 2.239130434782609) internal successors, (309), 137 states have internal predecessors, (309), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:24,539 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 345 transitions.
[2022-01-31 17:34:24,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332
[2022-01-31 17:34:24,540 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:34:24,540 INFO L514 BasicCegarLoop]: trace histogram [135, 135, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:34:24,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137
[2022-01-31 17:34:24,540 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:34:24,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:34:24,540 INFO L85 PathProgramCache]: Analyzing trace with hash -266339695, now seen corresponding path program 135 times
[2022-01-31 17:34:24,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:34:24,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759163773]
[2022-01-31 17:34:24,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:34:24,541 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:34:24,541 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:34:24,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:34:24,575 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:34:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:30,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:34:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:30,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:34:30,585 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:34:30,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759163773]
[2022-01-31 17:34:30,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1759163773] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:34:30,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:34:30,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [139] imperfect sequences [] total 139
[2022-01-31 17:34:30,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744463575]
[2022-01-31 17:34:30,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:34:30,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 139 states
[2022-01-31 17:34:30,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:34:30,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants.
[2022-01-31 17:34:30,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182
[2022-01-31 17:34:30,588 INFO L87 Difference]: Start difference. First operand 336 states and 345 transitions. Second operand has 139 states, 139 states have (on average 2.237410071942446) internal successors, (311), 138 states have internal predecessors, (311), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)