/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-cav19/array_init_var_plus_ind.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-d966a43
[2022-01-31 19:49:53,589 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-01-31 19:49:53,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-31 19:49:53,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-31 19:49:53,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-31 19:49:53,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-31 19:49:53,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-31 19:49:53,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-31 19:49:53,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-31 19:49:53,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-31 19:49:53,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-01-31 19:49:53,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-31 19:49:53,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-31 19:49:53,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-31 19:49:53,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-31 19:49:53,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-31 19:49:53,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-31 19:49:53,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-31 19:49:53,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-31 19:49:53,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-31 19:49:53,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-31 19:49:53,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-31 19:49:53,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-01-31 19:49:53,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-31 19:49:53,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-31 19:49:53,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-31 19:49:53,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-31 19:49:53,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-31 19:49:53,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-31 19:49:53,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-31 19:49:53,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-31 19:49:53,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-31 19:49:53,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-31 19:49:53,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-31 19:49:53,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-31 19:49:53,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
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[2022-01-31 19:49:53,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-31 19:49:53,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-01-31 19:49:53,705 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 19:49:53,712 INFO L113 SettingsManager]: Loading preferences was successful
[2022-01-31 19:49:53,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-31 19:49:53,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-31 19:49:53,713 INFO L138 SettingsManager]: * sizeof long=4
[2022-01-31 19:49:53,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-01-31 19:49:53,713 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-01-31 19:49:53,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-01-31 19:49:53,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-01-31 19:49:53,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-31 19:49:53,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-01-31 19:49:53,714 INFO L138 SettingsManager]: * sizeof long double=12
[2022-01-31 19:49:53,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-01-31 19:49:53,714 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-01-31 19:49:53,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-01-31 19:49:53,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-31 19:49:53,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-01-31 19:49:53,714 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-01-31 19:49:53,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-01-31 19:49:53,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-31 19:49:53,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-31 19:49:53,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2022-01-31 19:49:53,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-31 19:49:53,718 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN
[2022-01-31 19:49:53,718 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-31 19:49:53,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-31 19:49:53,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-31 19:49:53,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-31 19:49:53,970 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-01-31 19:49:53,971 INFO L275 PluginConnector]: CDTParser initialized
[2022-01-31 19:49:53,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_init_var_plus_ind.c
[2022-01-31 19:49:54,024 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a44225448/ae3ade0beb01478495c0ee50e0dadf2f/FLAG5130a9e15
[2022-01-31 19:49:54,411 INFO L306 CDTParser]: Found 1 translation units.
[2022-01-31 19:49:54,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_init_var_plus_ind.c
[2022-01-31 19:49:54,419 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a44225448/ae3ade0beb01478495c0ee50e0dadf2f/FLAG5130a9e15
[2022-01-31 19:49:54,433 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a44225448/ae3ade0beb01478495c0ee50e0dadf2f
[2022-01-31 19:49:54,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-31 19:49:54,439 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2022-01-31 19:49:54,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-31 19:49:54,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-31 19:49:54,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-31 19:49:54,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:49:54" (1/1) ...
[2022-01-31 19:49:54,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f065757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:49:54, skipping insertion in model container
[2022-01-31 19:49:54,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:49:54" (1/1) ...
[2022-01-31 19:49:54,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-01-31 19:49:54,463 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-01-31 19:49:54,588 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-cav19/array_init_var_plus_ind.c[414,427]
[2022-01-31 19:49:54,599 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-01-31 19:49:54,604 INFO L203 MainTranslator]: Completed pre-run
[2022-01-31 19:49:54,616 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-cav19/array_init_var_plus_ind.c[414,427]
[2022-01-31 19:49:54,620 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-01-31 19:49:54,646 INFO L208 MainTranslator]: Completed translation
[2022-01-31 19:49:54,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:49:54 WrapperNode
[2022-01-31 19:49:54,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-31 19:49:54,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-31 19:49:54,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-31 19:49:54,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-01-31 19:49:54,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:49:54" (1/1) ...
[2022-01-31 19:49:54,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:49:54" (1/1) ...
[2022-01-31 19:49:54,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:49:54" (1/1) ...
[2022-01-31 19:49:54,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:49:54" (1/1) ...
[2022-01-31 19:49:54,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:49:54" (1/1) ...
[2022-01-31 19:49:54,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:49:54" (1/1) ...
[2022-01-31 19:49:54,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:49:54" (1/1) ...
[2022-01-31 19:49:54,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-31 19:49:54,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-31 19:49:54,684 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-01-31 19:49:54,684 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-01-31 19:49:54,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:49:54" (1/1) ...
[2022-01-31 19:49:54,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-31 19:49:54,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-31 19:49:54,708 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 19:49:54,715 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 19:49:54,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-01-31 19:49:54,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-31 19:49:54,738 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-01-31 19:49:54,738 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-01-31 19:49:54,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-01-31 19:49:54,738 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-01-31 19:49:54,738 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-01-31 19:49:54,738 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-01-31 19:49:54,738 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-01-31 19:49:54,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-31 19:49:54,739 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-01-31 19:49:54,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-01-31 19:49:54,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2022-01-31 19:49:54,739 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-01-31 19:49:54,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-01-31 19:49:54,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-01-31 19:49:54,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-01-31 19:49:54,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-31 19:49:54,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-01-31 19:49:54,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-01-31 19:49:54,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-31 19:49:54,788 INFO L234 CfgBuilder]: Building ICFG
[2022-01-31 19:49:54,790 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-31 19:49:54,938 INFO L275 CfgBuilder]: Performing block encoding
[2022-01-31 19:49:54,948 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-31 19:49:54,948 INFO L299 CfgBuilder]: Removed 2 assume(true) statements.
[2022-01-31 19:49:54,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:49:54 BoogieIcfgContainer
[2022-01-31 19:49:54,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-31 19:49:54,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-31 19:49:54,951 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-01-31 19:49:54,971 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-01-31 19:49:54,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 07:49:54" (1/3) ...
[2022-01-31 19:49:54,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2373659a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:49:54, skipping insertion in model container
[2022-01-31 19:49:54,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:49:54" (2/3) ...
[2022-01-31 19:49:54,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2373659a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:49:54, skipping insertion in model container
[2022-01-31 19:49:54,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:49:54" (3/3) ...
[2022-01-31 19:49:54,974 INFO L111 eAbstractionObserver]: Analyzing ICFG array_init_var_plus_ind.c
[2022-01-31 19:49:54,978 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2022-01-31 19:49:54,978 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-31 19:49:55,040 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-31 19:49:55,046 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 19:49:55,046 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-31 19:49:55,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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 19:49:55,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-31 19:49:55,065 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:49:55,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:49:55,066 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:49:55,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:49:55,071 INFO L85 PathProgramCache]: Analyzing trace with hash 525097511, now seen corresponding path program 1 times
[2022-01-31 19:49:55,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:49:55,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569637307]
[2022-01-31 19:49:55,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:49:55,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:49:55,146 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:49:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:55,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:49:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:55,369 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 19:49:55,372 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:49:55,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569637307]
[2022-01-31 19:49:55,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1569637307] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:49:55,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:49:55,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 19:49:55,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490899155]
[2022-01-31 19:49:55,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:49:55,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-31 19:49:55,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:49:55,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-31 19:49:55,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-01-31 19:49:55,410 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 19:49:55,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:49:55,567 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions.
[2022-01-31 19:49:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-01-31 19:49:55,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13
[2022-01-31 19:49:55,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:49:55,582 INFO L225 Difference]: With dead ends: 52
[2022-01-31 19:49:55,582 INFO L226 Difference]: Without dead ends: 28
[2022-01-31 19:49:55,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-01-31 19:49:55,591 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 57 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:49:55,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 24 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:49:55,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2022-01-31 19:49:55,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21.
[2022-01-31 19:49:55,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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 19:49:55,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions.
[2022-01-31 19:49:55,635 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 13
[2022-01-31 19:49:55,636 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:49:55,636 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions.
[2022-01-31 19:49:55,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 19:49:55,636 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions.
[2022-01-31 19:49:55,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-01-31 19:49:55,637 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:49:55,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:49:55,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-31 19:49:55,638 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:49:55,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:49:55,640 INFO L85 PathProgramCache]: Analyzing trace with hash -474007766, now seen corresponding path program 1 times
[2022-01-31 19:49:55,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:49:55,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145382476]
[2022-01-31 19:49:55,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:49:55,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:49:55,645 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:49:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:55,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:49:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:55,735 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 19:49:55,735 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:49:55,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145382476]
[2022-01-31 19:49:55,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2145382476] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:49:55,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:49:55,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-01-31 19:49:55,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777566339]
[2022-01-31 19:49:55,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:49:55,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-31 19:49:55,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:49:55,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-31 19:49:55,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-01-31 19:49:55,741 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 19:49:55,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:49:55,834 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions.
[2022-01-31 19:49:55,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-01-31 19:49:55,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14
[2022-01-31 19:49:55,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:49:55,836 INFO L225 Difference]: With dead ends: 35
[2022-01-31 19:49:55,836 INFO L226 Difference]: Without dead ends: 23
[2022-01-31 19:49:55,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-01-31 19:49:55,842 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 21 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 19:49:55,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 28 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 19:49:55,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2022-01-31 19:49:55,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22.
[2022-01-31 19:49:55,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 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 19:49:55,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions.
[2022-01-31 19:49:55,855 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 14
[2022-01-31 19:49:55,855 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:49:55,856 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions.
[2022-01-31 19:49:55,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 19:49:55,857 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions.
[2022-01-31 19:49:55,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2022-01-31 19:49:55,858 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:49:55,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:49:55,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-31 19:49:55,859 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:49:55,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:49:55,862 INFO L85 PathProgramCache]: Analyzing trace with hash -400894909, now seen corresponding path program 1 times
[2022-01-31 19:49:55,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:49:55,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952254407]
[2022-01-31 19:49:55,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:49:55,879 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:49:55,879 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:49:55,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:49:55,881 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:49:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:55,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:49:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:55,960 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 19:49:55,960 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:49:55,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952254407]
[2022-01-31 19:49:55,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [952254407] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:49:55,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:49:55,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-01-31 19:49:55,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726211685]
[2022-01-31 19:49:55,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:49:55,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-31 19:49:55,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:49:55,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-31 19:49:55,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-01-31 19:49:55,963 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 19:49:56,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:49:56,063 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions.
[2022-01-31 19:49:56,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-01-31 19:49:56,064 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16
[2022-01-31 19:49:56,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:49:56,066 INFO L225 Difference]: With dead ends: 38
[2022-01-31 19:49:56,067 INFO L226 Difference]: Without dead ends: 26
[2022-01-31 19:49:56,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2022-01-31 19:49:56,074 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:49:56,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 33 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:49:56,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2022-01-31 19:49:56,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25.
[2022-01-31 19:49:56,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 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 19:49:56,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions.
[2022-01-31 19:49:56,092 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 16
[2022-01-31 19:49:56,092 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:49:56,092 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions.
[2022-01-31 19:49:56,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 19:49:56,092 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions.
[2022-01-31 19:49:56,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2022-01-31 19:49:56,093 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:49:56,093 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:49:56,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-01-31 19:49:56,093 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:49:56,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:49:56,094 INFO L85 PathProgramCache]: Analyzing trace with hash -66136921, now seen corresponding path program 2 times
[2022-01-31 19:49:56,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:49:56,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958241982]
[2022-01-31 19:49:56,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:49:56,097 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:49:56,097 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:49:56,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:49:56,098 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:49:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:56,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:49:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:56,211 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 19:49:56,211 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:49:56,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958241982]
[2022-01-31 19:49:56,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1958241982] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:49:56,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:49:56,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-01-31 19:49:56,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326492490]
[2022-01-31 19:49:56,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:49:56,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-01-31 19:49:56,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:49:56,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-01-31 19:49:56,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2022-01-31 19:49:56,213 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 19:49:56,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:49:56,336 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions.
[2022-01-31 19:49:56,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2022-01-31 19:49:56,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19
[2022-01-31 19:49:56,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:49:56,339 INFO L225 Difference]: With dead ends: 45
[2022-01-31 19:49:56,339 INFO L226 Difference]: Without dead ends: 34
[2022-01-31 19:49:56,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110
[2022-01-31 19:49:56,347 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 63 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:49:56,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 21 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:49:56,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2022-01-31 19:49:56,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27.
[2022-01-31 19:49:56,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 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 19:49:56,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions.
[2022-01-31 19:49:56,357 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19
[2022-01-31 19:49:56,357 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:49:56,357 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions.
[2022-01-31 19:49:56,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 19:49:56,357 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions.
[2022-01-31 19:49:56,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2022-01-31 19:49:56,358 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:49:56,358 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:49:56,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-01-31 19:49:56,359 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:49:56,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:49:56,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1622405974, now seen corresponding path program 1 times
[2022-01-31 19:49:56,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:49:56,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370007627]
[2022-01-31 19:49:56,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:49:56,362 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:49:56,362 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:49:56,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:49:56,364 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:49:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:56,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:49:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:56,509 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 19:49:56,509 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:49:56,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370007627]
[2022-01-31 19:49:56,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [370007627] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:49:56,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:49:56,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2022-01-31 19:49:56,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440427590]
[2022-01-31 19:49:56,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:49:56,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-01-31 19:49:56,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:49:56,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-01-31 19:49:56,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132
[2022-01-31 19:49:56,512 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 19:49:56,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:49:56,805 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions.
[2022-01-31 19:49:56,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2022-01-31 19:49:56,806 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20
[2022-01-31 19:49:56,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:49:56,807 INFO L225 Difference]: With dead ends: 43
[2022-01-31 19:49:56,807 INFO L226 Difference]: Without dead ends: 41
[2022-01-31 19:49:56,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420
[2022-01-31 19:49:56,808 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:49:56,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 56 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:49:56,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2022-01-31 19:49:56,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35.
[2022-01-31 19:49:56,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2022-01-31 19:49:56,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions.
[2022-01-31 19:49:56,817 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 20
[2022-01-31 19:49:56,818 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:49:56,818 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions.
[2022-01-31 19:49:56,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 19:49:56,818 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions.
[2022-01-31 19:49:56,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2022-01-31 19:49:56,819 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:49:56,819 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:49:56,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-01-31 19:49:56,819 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:49:56,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:49:56,819 INFO L85 PathProgramCache]: Analyzing trace with hash -204977725, now seen corresponding path program 3 times
[2022-01-31 19:49:56,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:49:56,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434443046]
[2022-01-31 19:49:56,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:49:56,822 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:49:56,822 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:49:56,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:49:56,823 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:49:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:56,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:49:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:56,884 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 19:49:56,884 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:49:56,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434443046]
[2022-01-31 19:49:56,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1434443046] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:49:56,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:49:56,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-01-31 19:49:56,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852625893]
[2022-01-31 19:49:56,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:49:56,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-01-31 19:49:56,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:49:56,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-01-31 19:49:56,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2022-01-31 19:49:56,886 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 19:49:57,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:49:57,038 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions.
[2022-01-31 19:49:57,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2022-01-31 19:49:57,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22
[2022-01-31 19:49:57,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:49:57,040 INFO L225 Difference]: With dead ends: 59
[2022-01-31 19:49:57,040 INFO L226 Difference]: Without dead ends: 48
[2022-01-31 19:49:57,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156
[2022-01-31 19:49:57,041 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 89 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:49:57,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 21 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:49:57,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2022-01-31 19:49:57,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37.
[2022-01-31 19:49:57,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2022-01-31 19:49:57,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions.
[2022-01-31 19:49:57,053 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 22
[2022-01-31 19:49:57,053 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:49:57,054 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions.
[2022-01-31 19:49:57,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 19:49:57,054 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions.
[2022-01-31 19:49:57,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2022-01-31 19:49:57,054 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:49:57,055 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:49:57,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-01-31 19:49:57,055 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:49:57,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:49:57,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1631503602, now seen corresponding path program 2 times
[2022-01-31 19:49:57,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:49:57,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712716266]
[2022-01-31 19:49:57,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:49:57,058 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:49:57,058 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:49:57,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:49:57,059 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:49:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:57,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:49:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:57,261 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 19:49:57,262 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:49:57,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712716266]
[2022-01-31 19:49:57,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1712716266] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:49:57,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:49:57,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2022-01-31 19:49:57,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821774396]
[2022-01-31 19:49:57,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:49:57,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-01-31 19:49:57,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:49:57,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-01-31 19:49:57,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132
[2022-01-31 19:49:57,263 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 19:49:57,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:49:57,617 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions.
[2022-01-31 19:49:57,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2022-01-31 19:49:57,618 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23
[2022-01-31 19:49:57,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:49:57,618 INFO L225 Difference]: With dead ends: 53
[2022-01-31 19:49:57,619 INFO L226 Difference]: Without dead ends: 51
[2022-01-31 19:49:57,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506
[2022-01-31 19:49:57,620 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 50 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:49:57,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 51 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:49:57,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2022-01-31 19:49:57,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38.
[2022-01-31 19:49:57,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 31 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2022-01-31 19:49:57,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions.
[2022-01-31 19:49:57,631 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 23
[2022-01-31 19:49:57,631 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:49:57,632 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions.
[2022-01-31 19:49:57,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 19:49:57,632 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions.
[2022-01-31 19:49:57,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2022-01-31 19:49:57,632 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:49:57,633 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:49:57,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-01-31 19:49:57,633 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:49:57,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:49:57,633 INFO L85 PathProgramCache]: Analyzing trace with hash -357863641, now seen corresponding path program 4 times
[2022-01-31 19:49:57,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:49:57,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255235362]
[2022-01-31 19:49:57,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:49:57,636 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:49:57,636 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:49:57,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:49:57,637 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:49:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:57,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:49:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:57,700 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 19:49:57,701 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:49:57,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255235362]
[2022-01-31 19:49:57,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [255235362] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:49:57,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:49:57,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2022-01-31 19:49:57,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94907406]
[2022-01-31 19:49:57,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:49:57,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-01-31 19:49:57,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:49:57,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-01-31 19:49:57,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2022-01-31 19:49:57,702 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 19:49:57,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:49:57,886 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions.
[2022-01-31 19:49:57,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2022-01-31 19:49:57,887 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25
[2022-01-31 19:49:57,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:49:57,889 INFO L225 Difference]: With dead ends: 69
[2022-01-31 19:49:57,889 INFO L226 Difference]: Without dead ends: 58
[2022-01-31 19:49:57,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210
[2022-01-31 19:49:57,890 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 104 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:49:57,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 21 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:49:57,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2022-01-31 19:49:57,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 40.
[2022-01-31 19:49:57,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.15625) internal successors, (37), 33 states have internal predecessors, (37), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2022-01-31 19:49:57,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions.
[2022-01-31 19:49:57,902 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 25
[2022-01-31 19:49:57,902 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:49:57,903 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions.
[2022-01-31 19:49:57,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 19:49:57,903 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions.
[2022-01-31 19:49:57,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-01-31 19:49:57,903 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:49:57,904 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:49:57,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-01-31 19:49:57,904 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:49:57,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:49:57,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2075999702, now seen corresponding path program 3 times
[2022-01-31 19:49:57,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:49:57,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223993525]
[2022-01-31 19:49:57,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:49:57,907 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:49:57,907 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:49:57,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:49:57,908 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:49:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:58,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:49:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:58,087 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 19:49:58,087 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:49:58,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223993525]
[2022-01-31 19:49:58,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1223993525] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:49:58,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:49:58,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2022-01-31 19:49:58,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146262096]
[2022-01-31 19:49:58,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:49:58,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2022-01-31 19:49:58,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:49:58,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2022-01-31 19:49:58,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156
[2022-01-31 19:49:58,089 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 19:49:58,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:49:58,332 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions.
[2022-01-31 19:49:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2022-01-31 19:49:58,332 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26
[2022-01-31 19:49:58,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:49:58,333 INFO L225 Difference]: With dead ends: 50
[2022-01-31 19:49:58,333 INFO L226 Difference]: Without dead ends: 48
[2022-01-31 19:49:58,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462
[2022-01-31 19:49:58,335 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 43 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:49:58,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 43 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:49:58,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2022-01-31 19:49:58,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39.
[2022-01-31 19:49:58,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 32 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2022-01-31 19:49:58,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions.
[2022-01-31 19:49:58,351 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26
[2022-01-31 19:49:58,351 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:49:58,351 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions.
[2022-01-31 19:49:58,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 19:49:58,351 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions.
[2022-01-31 19:49:58,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2022-01-31 19:49:58,352 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:49:58,352 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:49:58,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-01-31 19:49:58,352 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:49:58,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:49:58,353 INFO L85 PathProgramCache]: Analyzing trace with hash 942859908, now seen corresponding path program 1 times
[2022-01-31 19:49:58,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:49:58,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176486315]
[2022-01-31 19:49:58,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:49:58,355 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:49:58,355 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:49:58,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:49:58,356 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:49:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:58,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:49:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:58,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2022-01-31 19:49:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:58,420 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 19:49:58,420 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:49:58,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176486315]
[2022-01-31 19:49:58,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1176486315] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:49:58,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:49:58,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2022-01-31 19:49:58,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168096066]
[2022-01-31 19:49:58,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:49:58,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-01-31 19:49:58,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:49:58,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-01-31 19:49:58,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2022-01-31 19:49:58,421 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:49:58,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:49:58,516 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions.
[2022-01-31 19:49:58,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2022-01-31 19:49:58,516 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28
[2022-01-31 19:49:58,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:49:58,517 INFO L225 Difference]: With dead ends: 55
[2022-01-31 19:49:58,517 INFO L226 Difference]: Without dead ends: 39
[2022-01-31 19:49:58,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156
[2022-01-31 19:49:58,518 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 31 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 19:49:58,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 26 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 19:49:58,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2022-01-31 19:49:58,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39.
[2022-01-31 19:49:58,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2022-01-31 19:49:58,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions.
[2022-01-31 19:49:58,528 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 28
[2022-01-31 19:49:58,528 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:49:58,528 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions.
[2022-01-31 19:49:58,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:49:58,528 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions.
[2022-01-31 19:49:58,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2022-01-31 19:49:58,529 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:49:58,529 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:49:58,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-01-31 19:49:58,529 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:49:58,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:49:58,530 INFO L85 PathProgramCache]: Analyzing trace with hash 693465320, now seen corresponding path program 2 times
[2022-01-31 19:49:58,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:49:58,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540088271]
[2022-01-31 19:49:58,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:49:58,532 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:49:58,532 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:49:58,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:49:58,533 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:49:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:58,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:49:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:58,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2022-01-31 19:49:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:58,733 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 19:49:58,733 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:49:58,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540088271]
[2022-01-31 19:49:58,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [540088271] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:49:58,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:49:58,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2022-01-31 19:49:58,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880900044]
[2022-01-31 19:49:58,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:49:58,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-01-31 19:49:58,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:49:58,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-01-31 19:49:58,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210
[2022-01-31 19:49:58,735 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:49:59,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:49:59,106 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions.
[2022-01-31 19:49:59,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2022-01-31 19:49:59,107 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31
[2022-01-31 19:49:59,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:49:59,107 INFO L225 Difference]: With dead ends: 58
[2022-01-31 19:49:59,108 INFO L226 Difference]: Without dead ends: 56
[2022-01-31 19:49:59,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702
[2022-01-31 19:49:59,108 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 41 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 19:49:59,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 52 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 19:49:59,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2022-01-31 19:49:59,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50.
[2022-01-31 19:49:59,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 41 states have internal predecessors, (43), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-31 19:49:59,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions.
[2022-01-31 19:49:59,123 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 31
[2022-01-31 19:49:59,123 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:49:59,123 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions.
[2022-01-31 19:49:59,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:49:59,123 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions.
[2022-01-31 19:49:59,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2022-01-31 19:49:59,124 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:49:59,124 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:49:59,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2022-01-31 19:49:59,125 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:49:59,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:49:59,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1272716292, now seen corresponding path program 3 times
[2022-01-31 19:49:59,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:49:59,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981006896]
[2022-01-31 19:49:59,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:49:59,127 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:49:59,127 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:49:59,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:49:59,128 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:49:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:59,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:49:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:59,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2022-01-31 19:49:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:59,322 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 19:49:59,322 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:49:59,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981006896]
[2022-01-31 19:49:59,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1981006896] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:49:59,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:49:59,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2022-01-31 19:49:59,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13913572]
[2022-01-31 19:49:59,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:49:59,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-01-31 19:49:59,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:49:59,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-01-31 19:49:59,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240
[2022-01-31 19:49:59,324 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:49:59,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:49:59,859 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions.
[2022-01-31 19:49:59,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2022-01-31 19:49:59,859 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34
[2022-01-31 19:49:59,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:49:59,860 INFO L225 Difference]: With dead ends: 76
[2022-01-31 19:49:59,860 INFO L226 Difference]: Without dead ends: 74
[2022-01-31 19:49:59,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=856, Unknown=0, NotChecked=0, Total=992
[2022-01-31 19:49:59,861 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 56 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 19:49:59,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 79 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 19:49:59,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states.
[2022-01-31 19:49:59,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 51.
[2022-01-31 19:49:59,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.125) internal successors, (45), 42 states have internal predecessors, (45), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-31 19:49:59,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions.
[2022-01-31 19:49:59,879 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 34
[2022-01-31 19:49:59,879 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:49:59,879 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions.
[2022-01-31 19:49:59,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:49:59,879 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions.
[2022-01-31 19:49:59,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-01-31 19:49:59,880 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:49:59,880 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:49:59,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2022-01-31 19:49:59,880 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:49:59,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:49:59,881 INFO L85 PathProgramCache]: Analyzing trace with hash -402468835, now seen corresponding path program 1 times
[2022-01-31 19:49:59,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:49:59,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399720357]
[2022-01-31 19:49:59,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:49:59,883 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:49:59,883 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:49:59,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:49:59,884 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:49:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:59,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:49:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:59,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2022-01-31 19:49:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:49:59,955 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 19:49:59,955 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:49:59,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399720357]
[2022-01-31 19:49:59,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1399720357] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:49:59,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:49:59,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2022-01-31 19:49:59,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017316895]
[2022-01-31 19:49:59,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:49:59,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-01-31 19:49:59,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:49:59,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-01-31 19:49:59,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2022-01-31 19:49:59,956 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:00,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:00,148 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions.
[2022-01-31 19:50:00,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2022-01-31 19:50:00,149 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36
[2022-01-31 19:50:00,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:00,150 INFO L225 Difference]: With dead ends: 94
[2022-01-31 19:50:00,150 INFO L226 Difference]: Without dead ends: 77
[2022-01-31 19:50:00,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=169, Unknown=0, NotChecked=0, Total=272
[2022-01-31 19:50:00,151 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 116 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:00,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 25 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:50:00,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states.
[2022-01-31 19:50:00,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 53.
[2022-01-31 19:50:00,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 42 states have (on average 1.119047619047619) internal successors, (47), 44 states have internal predecessors, (47), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-31 19:50:00,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions.
[2022-01-31 19:50:00,165 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 36
[2022-01-31 19:50:00,165 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:00,165 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions.
[2022-01-31 19:50:00,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:00,165 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions.
[2022-01-31 19:50:00,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2022-01-31 19:50:00,166 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:00,166 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:00,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2022-01-31 19:50:00,167 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:00,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:00,167 INFO L85 PathProgramCache]: Analyzing trace with hash 559827816, now seen corresponding path program 4 times
[2022-01-31 19:50:00,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:00,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348823113]
[2022-01-31 19:50:00,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:00,169 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:00,169 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:00,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:00,170 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:00,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:00,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2022-01-31 19:50:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:00,390 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 19:50:00,390 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:00,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348823113]
[2022-01-31 19:50:00,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1348823113] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:00,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:00,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17
[2022-01-31 19:50:00,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167915431]
[2022-01-31 19:50:00,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:00,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2022-01-31 19:50:00,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:00,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2022-01-31 19:50:00,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272
[2022-01-31 19:50:00,392 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 17 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:00,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:00,762 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions.
[2022-01-31 19:50:00,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2022-01-31 19:50:00,762 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37
[2022-01-31 19:50:00,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:00,763 INFO L225 Difference]: With dead ends: 65
[2022-01-31 19:50:00,763 INFO L226 Difference]: Without dead ends: 63
[2022-01-31 19:50:00,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812
[2022-01-31 19:50:00,764 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 37 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:00,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 74 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 19:50:00,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2022-01-31 19:50:00,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 50.
[2022-01-31 19:50:00,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.125) internal successors, (45), 41 states have internal predecessors, (45), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-31 19:50:00,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions.
[2022-01-31 19:50:00,777 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 37
[2022-01-31 19:50:00,777 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:00,778 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions.
[2022-01-31 19:50:00,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:00,778 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions.
[2022-01-31 19:50:00,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2022-01-31 19:50:00,778 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:00,778 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:00,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2022-01-31 19:50:00,779 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:00,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:00,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1294675138, now seen corresponding path program 5 times
[2022-01-31 19:50:00,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:00,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566647890]
[2022-01-31 19:50:00,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:00,781 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:00,781 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:00,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:00,782 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:00,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:00,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2022-01-31 19:50:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:00,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27
[2022-01-31 19:50:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:00,851 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 19:50:00,851 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:00,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566647890]
[2022-01-31 19:50:00,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [566647890] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:00,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:00,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2022-01-31 19:50:00,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996567701]
[2022-01-31 19:50:00,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:00,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-01-31 19:50:00,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:00,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-01-31 19:50:00,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2022-01-31 19:50:00,853 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-01-31 19:50:01,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:01,012 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions.
[2022-01-31 19:50:01,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2022-01-31 19:50:01,012 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39
[2022-01-31 19:50:01,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:01,013 INFO L225 Difference]: With dead ends: 70
[2022-01-31 19:50:01,013 INFO L226 Difference]: Without dead ends: 50
[2022-01-31 19:50:01,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272
[2022-01-31 19:50:01,014 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 37 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:01,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 48 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:50:01,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2022-01-31 19:50:01,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50.
[2022-01-31 19:50:01,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.1) internal successors, (44), 41 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-31 19:50:01,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions.
[2022-01-31 19:50:01,026 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 39
[2022-01-31 19:50:01,026 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:01,026 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions.
[2022-01-31 19:50:01,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-01-31 19:50:01,027 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions.
[2022-01-31 19:50:01,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2022-01-31 19:50:01,027 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:01,027 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:01,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2022-01-31 19:50:01,027 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:01,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:01,028 INFO L85 PathProgramCache]: Analyzing trace with hash 2001927134, now seen corresponding path program 6 times
[2022-01-31 19:50:01,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:01,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744173353]
[2022-01-31 19:50:01,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:01,029 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:01,029 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:01,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:01,030 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:01,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:01,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2022-01-31 19:50:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:01,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2022-01-31 19:50:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:01,382 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 19:50:01,382 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:01,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744173353]
[2022-01-31 19:50:01,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [744173353] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:01,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:01,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18
[2022-01-31 19:50:01,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607715217]
[2022-01-31 19:50:01,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:01,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2022-01-31 19:50:01,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:01,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2022-01-31 19:50:01,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306
[2022-01-31 19:50:01,384 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-01-31 19:50:01,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:01,912 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions.
[2022-01-31 19:50:01,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2022-01-31 19:50:01,912 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42
[2022-01-31 19:50:01,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:01,913 INFO L225 Difference]: With dead ends: 69
[2022-01-31 19:50:01,913 INFO L226 Difference]: Without dead ends: 50
[2022-01-31 19:50:01,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056
[2022-01-31 19:50:01,914 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 37 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:01,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 73 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 19:50:01,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2022-01-31 19:50:01,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50.
[2022-01-31 19:50:01,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.075) internal successors, (43), 41 states have internal predecessors, (43), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-31 19:50:01,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions.
[2022-01-31 19:50:01,928 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 42
[2022-01-31 19:50:01,928 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:01,928 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions.
[2022-01-31 19:50:01,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-01-31 19:50:01,929 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions.
[2022-01-31 19:50:01,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2022-01-31 19:50:01,929 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:01,929 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:01,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2022-01-31 19:50:01,930 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:01,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:01,930 INFO L85 PathProgramCache]: Analyzing trace with hash 636585794, now seen corresponding path program 7 times
[2022-01-31 19:50:01,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:01,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079371983]
[2022-01-31 19:50:01,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:01,932 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:01,932 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:01,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:01,933 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:02,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:02,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2022-01-31 19:50:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:02,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2022-01-31 19:50:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:02,271 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 19:50:02,272 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:02,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079371983]
[2022-01-31 19:50:02,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1079371983] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:02,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:02,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19
[2022-01-31 19:50:02,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074048948]
[2022-01-31 19:50:02,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:02,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2022-01-31 19:50:02,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:02,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2022-01-31 19:50:02,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342
[2022-01-31 19:50:02,273 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-01-31 19:50:02,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:02,802 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions.
[2022-01-31 19:50:02,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2022-01-31 19:50:02,803 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45
[2022-01-31 19:50:02,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:02,803 INFO L225 Difference]: With dead ends: 74
[2022-01-31 19:50:02,803 INFO L226 Difference]: Without dead ends: 72
[2022-01-31 19:50:02,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=1117, Unknown=0, NotChecked=0, Total=1260
[2022-01-31 19:50:02,805 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 50 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:02,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 60 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 19:50:02,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2022-01-31 19:50:02,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66.
[2022-01-31 19:50:02,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 54 states have internal predecessors, (56), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7)
[2022-01-31 19:50:02,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions.
[2022-01-31 19:50:02,824 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 45
[2022-01-31 19:50:02,824 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:02,824 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions.
[2022-01-31 19:50:02,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-01-31 19:50:02,824 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions.
[2022-01-31 19:50:02,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2022-01-31 19:50:02,825 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:02,825 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:02,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2022-01-31 19:50:02,825 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:02,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:02,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1487025829, now seen corresponding path program 2 times
[2022-01-31 19:50:02,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:02,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831356359]
[2022-01-31 19:50:02,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:02,827 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:02,827 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:02,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:02,828 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:02,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:02,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27
[2022-01-31 19:50:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:02,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35
[2022-01-31 19:50:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:02,913 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 19:50:02,913 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:02,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831356359]
[2022-01-31 19:50:02,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [831356359] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:02,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:02,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2022-01-31 19:50:02,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913722160]
[2022-01-31 19:50:02,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:02,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-01-31 19:50:02,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:02,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-01-31 19:50:02,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110
[2022-01-31 19:50:02,914 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:03,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:03,099 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions.
[2022-01-31 19:50:03,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2022-01-31 19:50:03,099 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47
[2022-01-31 19:50:03,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:03,100 INFO L225 Difference]: With dead ends: 110
[2022-01-31 19:50:03,100 INFO L226 Difference]: Without dead ends: 85
[2022-01-31 19:50:03,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=213, Unknown=0, NotChecked=0, Total=342
[2022-01-31 19:50:03,101 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 107 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:03,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 19 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:50:03,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2022-01-31 19:50:03,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 68.
[2022-01-31 19:50:03,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 56 states have internal predecessors, (58), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7)
[2022-01-31 19:50:03,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions.
[2022-01-31 19:50:03,122 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 47
[2022-01-31 19:50:03,122 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:03,122 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions.
[2022-01-31 19:50:03,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:03,123 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions.
[2022-01-31 19:50:03,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2022-01-31 19:50:03,123 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:03,123 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:03,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2022-01-31 19:50:03,123 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:03,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:03,124 INFO L85 PathProgramCache]: Analyzing trace with hash -906981026, now seen corresponding path program 8 times
[2022-01-31 19:50:03,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:03,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655923095]
[2022-01-31 19:50:03,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:03,126 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:03,126 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:03,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:03,127 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:03,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:03,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2022-01-31 19:50:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:03,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2022-01-31 19:50:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:03,533 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 19:50:03,534 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:03,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655923095]
[2022-01-31 19:50:03,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [655923095] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:03,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:03,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20
[2022-01-31 19:50:03,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220857794]
[2022-01-31 19:50:03,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:03,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2022-01-31 19:50:03,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:03,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2022-01-31 19:50:03,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380
[2022-01-31 19:50:03,535 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-01-31 19:50:04,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:04,111 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions.
[2022-01-31 19:50:04,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2022-01-31 19:50:04,111 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 48
[2022-01-31 19:50:04,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:04,114 INFO L225 Difference]: With dead ends: 80
[2022-01-31 19:50:04,114 INFO L226 Difference]: Without dead ends: 78
[2022-01-31 19:50:04,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=1052, Unknown=0, NotChecked=0, Total=1190
[2022-01-31 19:50:04,115 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 42 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:04,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 94 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 19:50:04,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2022-01-31 19:50:04,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 61.
[2022-01-31 19:50:04,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 50 states have internal predecessors, (53), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-31 19:50:04,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions.
[2022-01-31 19:50:04,138 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 48
[2022-01-31 19:50:04,138 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:04,138 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions.
[2022-01-31 19:50:04,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-01-31 19:50:04,139 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions.
[2022-01-31 19:50:04,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2022-01-31 19:50:04,139 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:04,139 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:04,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2022-01-31 19:50:04,139 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:04,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:04,140 INFO L85 PathProgramCache]: Analyzing trace with hash -278902500, now seen corresponding path program 9 times
[2022-01-31 19:50:04,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:04,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344687622]
[2022-01-31 19:50:04,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:04,143 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:04,143 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:04,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:04,144 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:04,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:04,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2022-01-31 19:50:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:04,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2022-01-31 19:50:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:04,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41
[2022-01-31 19:50:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:04,482 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 19:50:04,483 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:04,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344687622]
[2022-01-31 19:50:04,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [344687622] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:04,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:04,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21
[2022-01-31 19:50:04,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946860399]
[2022-01-31 19:50:04,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:04,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2022-01-31 19:50:04,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:04,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2022-01-31 19:50:04,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420
[2022-01-31 19:50:04,485 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 21 states, 20 states have (on average 1.85) internal successors, (37), 19 states have internal predecessors, (37), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-31 19:50:05,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:05,130 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions.
[2022-01-31 19:50:05,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2022-01-31 19:50:05,131 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.85) internal successors, (37), 19 states have internal predecessors, (37), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 53
[2022-01-31 19:50:05,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:05,131 INFO L225 Difference]: With dead ends: 84
[2022-01-31 19:50:05,131 INFO L226 Difference]: Without dead ends: 61
[2022-01-31 19:50:05,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=1311, Unknown=0, NotChecked=0, Total=1482
[2022-01-31 19:50:05,133 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 38 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:05,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 54 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 19:50:05,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states.
[2022-01-31 19:50:05,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61.
[2022-01-31 19:50:05,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 50 states have internal predecessors, (52), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-31 19:50:05,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions.
[2022-01-31 19:50:05,151 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 53
[2022-01-31 19:50:05,151 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:05,151 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions.
[2022-01-31 19:50:05,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.85) internal successors, (37), 19 states have internal predecessors, (37), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-31 19:50:05,151 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions.
[2022-01-31 19:50:05,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2022-01-31 19:50:05,152 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:05,152 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:05,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2022-01-31 19:50:05,152 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:05,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:05,153 INFO L85 PathProgramCache]: Analyzing trace with hash 137459512, now seen corresponding path program 10 times
[2022-01-31 19:50:05,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:05,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923911698]
[2022-01-31 19:50:05,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:05,154 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:05,154 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:05,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:05,155 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:05,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:05,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2022-01-31 19:50:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:05,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2022-01-31 19:50:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:05,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2022-01-31 19:50:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:05,475 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 19:50:05,475 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:05,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923911698]
[2022-01-31 19:50:05,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1923911698] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:05,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:05,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22
[2022-01-31 19:50:05,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237255225]
[2022-01-31 19:50:05,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:05,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2022-01-31 19:50:05,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:05,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2022-01-31 19:50:05,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462
[2022-01-31 19:50:05,479 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-31 19:50:06,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:06,134 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions.
[2022-01-31 19:50:06,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2022-01-31 19:50:06,134 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 56
[2022-01-31 19:50:06,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:06,135 INFO L225 Difference]: With dead ends: 89
[2022-01-31 19:50:06,135 INFO L226 Difference]: Without dead ends: 87
[2022-01-31 19:50:06,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=1488, Unknown=0, NotChecked=0, Total=1640
[2022-01-31 19:50:06,137 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 50 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:06,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 92 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 19:50:06,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states.
[2022-01-31 19:50:06,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 81.
[2022-01-31 19:50:06,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 64 states have (on average 1.0625) internal successors, (68), 66 states have internal predecessors, (68), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9)
[2022-01-31 19:50:06,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions.
[2022-01-31 19:50:06,165 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 56
[2022-01-31 19:50:06,165 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:06,165 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions.
[2022-01-31 19:50:06,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-31 19:50:06,166 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions.
[2022-01-31 19:50:06,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2022-01-31 19:50:06,166 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:06,166 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:06,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20
[2022-01-31 19:50:06,166 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:06,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:06,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1923647151, now seen corresponding path program 3 times
[2022-01-31 19:50:06,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:06,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616391931]
[2022-01-31 19:50:06,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:06,168 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:06,168 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:06,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:06,169 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:06,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:06,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2022-01-31 19:50:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:06,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2022-01-31 19:50:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:06,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46
[2022-01-31 19:50:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:06,289 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 19:50:06,289 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:06,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616391931]
[2022-01-31 19:50:06,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1616391931] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:06,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:06,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2022-01-31 19:50:06,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253197305]
[2022-01-31 19:50:06,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:06,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-01-31 19:50:06,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:06,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-01-31 19:50:06,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132
[2022-01-31 19:50:06,290 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:06,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:06,517 INFO L93 Difference]: Finished difference Result 137 states and 150 transitions.
[2022-01-31 19:50:06,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2022-01-31 19:50:06,518 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 58
[2022-01-31 19:50:06,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:06,519 INFO L225 Difference]: With dead ends: 137
[2022-01-31 19:50:06,519 INFO L226 Difference]: Without dead ends: 104
[2022-01-31 19:50:06,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=262, Unknown=0, NotChecked=0, Total=420
[2022-01-31 19:50:06,524 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 108 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:06,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 23 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:50:06,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2022-01-31 19:50:06,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 83.
[2022-01-31 19:50:06,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 66 states have (on average 1.0606060606060606) internal successors, (70), 68 states have internal predecessors, (70), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9)
[2022-01-31 19:50:06,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions.
[2022-01-31 19:50:06,558 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 58
[2022-01-31 19:50:06,559 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:06,559 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions.
[2022-01-31 19:50:06,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:06,559 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions.
[2022-01-31 19:50:06,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2022-01-31 19:50:06,559 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:06,559 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:06,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21
[2022-01-31 19:50:06,560 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:06,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:06,560 INFO L85 PathProgramCache]: Analyzing trace with hash 112608156, now seen corresponding path program 11 times
[2022-01-31 19:50:06,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:06,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067188809]
[2022-01-31 19:50:06,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:06,562 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:06,562 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:06,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:06,563 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:06,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:06,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31
[2022-01-31 19:50:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:06,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2022-01-31 19:50:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:06,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2022-01-31 19:50:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:06,878 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 19:50:06,878 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:06,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067188809]
[2022-01-31 19:50:06,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2067188809] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:06,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:06,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23
[2022-01-31 19:50:06,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192066345]
[2022-01-31 19:50:06,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:06,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2022-01-31 19:50:06,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:06,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2022-01-31 19:50:06,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506
[2022-01-31 19:50:06,879 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 21 states have internal predecessors, (43), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-31 19:50:07,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:07,531 INFO L93 Difference]: Finished difference Result 95 states and 101 transitions.
[2022-01-31 19:50:07,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2022-01-31 19:50:07,531 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 21 states have internal predecessors, (43), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 59
[2022-01-31 19:50:07,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:07,532 INFO L225 Difference]: With dead ends: 95
[2022-01-31 19:50:07,532 INFO L226 Difference]: Without dead ends: 93
[2022-01-31 19:50:07,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=1479, Unknown=0, NotChecked=0, Total=1640
[2022-01-31 19:50:07,533 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 61 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:07,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 101 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 19:50:07,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2022-01-31 19:50:07,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 72.
[2022-01-31 19:50:07,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 59 states have internal predecessors, (62), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6)
[2022-01-31 19:50:07,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions.
[2022-01-31 19:50:07,553 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 59
[2022-01-31 19:50:07,553 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:07,553 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions.
[2022-01-31 19:50:07,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 21 states have internal predecessors, (43), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-31 19:50:07,554 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions.
[2022-01-31 19:50:07,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2022-01-31 19:50:07,554 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:07,554 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:07,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22
[2022-01-31 19:50:07,554 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:07,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:07,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2147228910, now seen corresponding path program 12 times
[2022-01-31 19:50:07,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:07,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003867544]
[2022-01-31 19:50:07,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:07,556 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:07,557 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:07,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:07,558 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:07,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:07,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2022-01-31 19:50:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:07,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2022-01-31 19:50:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:07,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2022-01-31 19:50:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:07,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2022-01-31 19:50:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:07,907 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 19:50:07,907 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:07,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003867544]
[2022-01-31 19:50:07,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2003867544] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:07,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:07,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24
[2022-01-31 19:50:07,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490756603]
[2022-01-31 19:50:07,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:07,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-01-31 19:50:07,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:07,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-01-31 19:50:07,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552
[2022-01-31 19:50:07,909 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 22 states have internal predecessors, (43), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-31 19:50:08,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:08,673 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions.
[2022-01-31 19:50:08,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2022-01-31 19:50:08,674 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 22 states have internal predecessors, (43), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 64
[2022-01-31 19:50:08,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:08,674 INFO L225 Difference]: With dead ends: 99
[2022-01-31 19:50:08,675 INFO L226 Difference]: Without dead ends: 72
[2022-01-31 19:50:08,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=207, Invalid=1773, Unknown=0, NotChecked=0, Total=1980
[2022-01-31 19:50:08,676 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 39 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:08,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 86 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 19:50:08,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2022-01-31 19:50:08,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72.
[2022-01-31 19:50:08,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 59 states have internal predecessors, (61), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6)
[2022-01-31 19:50:08,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions.
[2022-01-31 19:50:08,704 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 64
[2022-01-31 19:50:08,704 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:08,704 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions.
[2022-01-31 19:50:08,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 22 states have internal predecessors, (43), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-31 19:50:08,704 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions.
[2022-01-31 19:50:08,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-01-31 19:50:08,705 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:08,705 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:08,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23
[2022-01-31 19:50:08,705 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:08,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:08,706 INFO L85 PathProgramCache]: Analyzing trace with hash 767036278, now seen corresponding path program 13 times
[2022-01-31 19:50:08,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:08,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006384581]
[2022-01-31 19:50:08,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:08,708 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:08,709 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:08,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:08,711 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:09,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:09,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31
[2022-01-31 19:50:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:09,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2022-01-31 19:50:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:09,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2022-01-31 19:50:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:09,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2022-01-31 19:50:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:09,080 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 19:50:09,081 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:09,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006384581]
[2022-01-31 19:50:09,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2006384581] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:09,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:09,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25
[2022-01-31 19:50:09,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769003193]
[2022-01-31 19:50:09,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:09,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2022-01-31 19:50:09,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:09,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2022-01-31 19:50:09,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600
[2022-01-31 19:50:09,082 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-31 19:50:09,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:09,840 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions.
[2022-01-31 19:50:09,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2022-01-31 19:50:09,841 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 67
[2022-01-31 19:50:09,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:09,841 INFO L225 Difference]: With dead ends: 104
[2022-01-31 19:50:09,841 INFO L226 Difference]: Without dead ends: 102
[2022-01-31 19:50:09,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=175, Invalid=1987, Unknown=0, NotChecked=0, Total=2162
[2022-01-31 19:50:09,843 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 54 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:09,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 117 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 19:50:09,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states.
[2022-01-31 19:50:09,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 96.
[2022-01-31 19:50:09,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 78 states have internal predecessors, (80), 12 states have call successors, (12), 8 states have call predecessors, (12), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11)
[2022-01-31 19:50:09,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions.
[2022-01-31 19:50:09,880 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 67
[2022-01-31 19:50:09,880 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:09,880 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions.
[2022-01-31 19:50:09,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-31 19:50:09,880 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions.
[2022-01-31 19:50:09,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2022-01-31 19:50:09,881 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:09,881 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:09,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24
[2022-01-31 19:50:09,881 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:09,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:09,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1811784817, now seen corresponding path program 4 times
[2022-01-31 19:50:09,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:09,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393815887]
[2022-01-31 19:50:09,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:09,883 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:09,883 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:09,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:09,884 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:09,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:09,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2022-01-31 19:50:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:09,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41
[2022-01-31 19:50:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:09,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2022-01-31 19:50:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:09,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2022-01-31 19:50:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:09,991 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 19:50:09,992 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:09,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393815887]
[2022-01-31 19:50:09,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1393815887] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:09,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:09,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2022-01-31 19:50:09,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116986716]
[2022-01-31 19:50:09,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:09,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2022-01-31 19:50:09,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:09,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2022-01-31 19:50:09,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156
[2022-01-31 19:50:09,993 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:10,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:10,196 INFO L93 Difference]: Finished difference Result 164 states and 179 transitions.
[2022-01-31 19:50:10,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2022-01-31 19:50:10,196 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 69
[2022-01-31 19:50:10,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:10,197 INFO L225 Difference]: With dead ends: 164
[2022-01-31 19:50:10,197 INFO L226 Difference]: Without dead ends: 123
[2022-01-31 19:50:10,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=316, Unknown=0, NotChecked=0, Total=506
[2022-01-31 19:50:10,198 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 119 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:10,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 19 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:50:10,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2022-01-31 19:50:10,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 98.
[2022-01-31 19:50:10,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 78 states have (on average 1.0512820512820513) internal successors, (82), 80 states have internal predecessors, (82), 12 states have call successors, (12), 8 states have call predecessors, (12), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11)
[2022-01-31 19:50:10,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions.
[2022-01-31 19:50:10,230 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 69
[2022-01-31 19:50:10,230 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:10,230 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions.
[2022-01-31 19:50:10,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:10,230 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions.
[2022-01-31 19:50:10,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2022-01-31 19:50:10,231 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:10,231 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:10,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25
[2022-01-31 19:50:10,231 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:10,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:10,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1172330642, now seen corresponding path program 14 times
[2022-01-31 19:50:10,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:10,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426991213]
[2022-01-31 19:50:10,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:10,233 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:10,233 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:10,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:10,234 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:10,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:10,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34
[2022-01-31 19:50:10,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:10,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2022-01-31 19:50:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:10,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2022-01-31 19:50:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:10,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58
[2022-01-31 19:50:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 19:50:10,640 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:10,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426991213]
[2022-01-31 19:50:10,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [426991213] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:10,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:10,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26
[2022-01-31 19:50:10,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752946170]
[2022-01-31 19:50:10,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:10,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-01-31 19:50:10,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:10,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-01-31 19:50:10,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650
[2022-01-31 19:50:10,642 INFO L87 Difference]: Start difference. First operand 98 states and 105 transitions. Second operand has 26 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-31 19:50:11,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:11,496 INFO L93 Difference]: Finished difference Result 110 states and 117 transitions.
[2022-01-31 19:50:11,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2022-01-31 19:50:11,497 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 70
[2022-01-31 19:50:11,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:11,497 INFO L225 Difference]: With dead ends: 110
[2022-01-31 19:50:11,497 INFO L226 Difference]: Without dead ends: 108
[2022-01-31 19:50:11,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=186, Invalid=1976, Unknown=0, NotChecked=0, Total=2162
[2022-01-31 19:50:11,498 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 52 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:11,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 131 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-31 19:50:11,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states.
[2022-01-31 19:50:11,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 83.
[2022-01-31 19:50:11,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 67 states have (on average 1.0597014925373134) internal successors, (71), 68 states have internal predecessors, (71), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7)
[2022-01-31 19:50:11,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions.
[2022-01-31 19:50:11,529 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 70
[2022-01-31 19:50:11,529 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:11,529 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions.
[2022-01-31 19:50:11,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-31 19:50:11,529 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions.
[2022-01-31 19:50:11,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2022-01-31 19:50:11,530 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:11,530 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:11,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26
[2022-01-31 19:50:11,531 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:11,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:11,531 INFO L85 PathProgramCache]: Analyzing trace with hash 944331088, now seen corresponding path program 15 times
[2022-01-31 19:50:11,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:11,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793174631]
[2022-01-31 19:50:11,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:11,533 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:11,533 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:11,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:11,534 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:11,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:11,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31
[2022-01-31 19:50:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:11,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2022-01-31 19:50:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:11,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2022-01-31 19:50:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:11,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2022-01-31 19:50:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:11,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63
[2022-01-31 19:50:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:11,957 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 19:50:11,957 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:11,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793174631]
[2022-01-31 19:50:11,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1793174631] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:11,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:11,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27
[2022-01-31 19:50:11,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424754499]
[2022-01-31 19:50:11,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:11,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2022-01-31 19:50:11,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:11,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2022-01-31 19:50:11,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=643, Unknown=0, NotChecked=0, Total=702
[2022-01-31 19:50:11,959 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand has 27 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-01-31 19:50:12,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:12,905 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions.
[2022-01-31 19:50:12,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2022-01-31 19:50:12,907 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 75
[2022-01-31 19:50:12,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:12,908 INFO L225 Difference]: With dead ends: 118
[2022-01-31 19:50:12,908 INFO L226 Difference]: Without dead ends: 116
[2022-01-31 19:50:12,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=2361, Unknown=0, NotChecked=0, Total=2550
[2022-01-31 19:50:12,909 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 57 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:12,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 116 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-31 19:50:12,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states.
[2022-01-31 19:50:12,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 110.
[2022-01-31 19:50:12,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 87 states have (on average 1.0459770114942528) internal successors, (91), 89 states have internal predecessors, (91), 14 states have call successors, (14), 9 states have call predecessors, (14), 8 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13)
[2022-01-31 19:50:12,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions.
[2022-01-31 19:50:12,946 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 75
[2022-01-31 19:50:12,946 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:12,946 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions.
[2022-01-31 19:50:12,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-01-31 19:50:12,946 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions.
[2022-01-31 19:50:12,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2022-01-31 19:50:12,947 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:12,947 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:12,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27
[2022-01-31 19:50:12,947 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:12,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:12,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1968228972, now seen corresponding path program 16 times
[2022-01-31 19:50:12,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:12,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422498747]
[2022-01-31 19:50:12,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:12,949 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:12,949 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:12,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:12,950 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:13,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:13,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34
[2022-01-31 19:50:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:13,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2022-01-31 19:50:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:13,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2022-01-31 19:50:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:13,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58
[2022-01-31 19:50:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:13,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66
[2022-01-31 19:50:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:13,425 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 19:50:13,425 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:13,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422498747]
[2022-01-31 19:50:13,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [422498747] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:13,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:13,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28
[2022-01-31 19:50:13,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028474425]
[2022-01-31 19:50:13,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:13,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-01-31 19:50:13,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:13,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-01-31 19:50:13,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756
[2022-01-31 19:50:13,426 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand has 28 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-01-31 19:50:14,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:14,609 INFO L93 Difference]: Finished difference Result 152 states and 168 transitions.
[2022-01-31 19:50:14,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2022-01-31 19:50:14,610 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 78
[2022-01-31 19:50:14,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:14,611 INFO L225 Difference]: With dead ends: 152
[2022-01-31 19:50:14,611 INFO L226 Difference]: Without dead ends: 150
[2022-01-31 19:50:14,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=3276, Unknown=0, NotChecked=0, Total=3540
[2022-01-31 19:50:14,612 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 80 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:14,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 128 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2022-01-31 19:50:14,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states.
[2022-01-31 19:50:14,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 111.
[2022-01-31 19:50:14,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 90 states have internal predecessors, (93), 14 states have call successors, (14), 9 states have call predecessors, (14), 8 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13)
[2022-01-31 19:50:14,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions.
[2022-01-31 19:50:14,652 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 120 transitions. Word has length 78
[2022-01-31 19:50:14,652 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:14,652 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 120 transitions.
[2022-01-31 19:50:14,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-01-31 19:50:14,652 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 120 transitions.
[2022-01-31 19:50:14,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81
[2022-01-31 19:50:14,653 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:14,653 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:14,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28
[2022-01-31 19:50:14,653 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:14,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:14,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1428022651, now seen corresponding path program 5 times
[2022-01-31 19:50:14,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:14,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446476962]
[2022-01-31 19:50:14,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:14,654 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:14,655 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:14,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:14,656 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:14,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:14,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2022-01-31 19:50:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:14,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2022-01-31 19:50:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:14,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2022-01-31 19:50:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:14,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60
[2022-01-31 19:50:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:14,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68
[2022-01-31 19:50:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:14,781 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 19:50:14,781 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:14,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446476962]
[2022-01-31 19:50:14,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1446476962] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:14,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:14,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2022-01-31 19:50:14,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449374079]
[2022-01-31 19:50:14,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:14,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2022-01-31 19:50:14,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:14,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2022-01-31 19:50:14,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182
[2022-01-31 19:50:14,782 INFO L87 Difference]: Start difference. First operand 111 states and 120 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:15,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:15,111 INFO L93 Difference]: Finished difference Result 218 states and 243 transitions.
[2022-01-31 19:50:15,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2022-01-31 19:50:15,113 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 80
[2022-01-31 19:50:15,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:15,115 INFO L225 Difference]: With dead ends: 218
[2022-01-31 19:50:15,115 INFO L226 Difference]: Without dead ends: 169
[2022-01-31 19:50:15,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=225, Invalid=375, Unknown=0, NotChecked=0, Total=600
[2022-01-31 19:50:15,116 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 127 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:15,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 25 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:50:15,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states.
[2022-01-31 19:50:15,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 113.
[2022-01-31 19:50:15,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 92 states have internal predecessors, (95), 14 states have call successors, (14), 9 states have call predecessors, (14), 8 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13)
[2022-01-31 19:50:15,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions.
[2022-01-31 19:50:15,169 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 80
[2022-01-31 19:50:15,169 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:15,169 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions.
[2022-01-31 19:50:15,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:15,170 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions.
[2022-01-31 19:50:15,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2022-01-31 19:50:15,170 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:15,170 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:15,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29
[2022-01-31 19:50:15,171 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:15,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:15,171 INFO L85 PathProgramCache]: Analyzing trace with hash 2052355024, now seen corresponding path program 17 times
[2022-01-31 19:50:15,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:15,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021570878]
[2022-01-31 19:50:15,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:15,173 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:15,173 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:15,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:15,174 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:15,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:15,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2022-01-31 19:50:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:15,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2022-01-31 19:50:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:15,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53
[2022-01-31 19:50:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:15,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61
[2022-01-31 19:50:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:15,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69
[2022-01-31 19:50:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 19:50:15,611 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:15,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021570878]
[2022-01-31 19:50:15,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1021570878] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:15,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:15,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29
[2022-01-31 19:50:15,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173659062]
[2022-01-31 19:50:15,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:15,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2022-01-31 19:50:15,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:15,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2022-01-31 19:50:15,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812
[2022-01-31 19:50:15,612 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand has 29 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 27 states have internal predecessors, (55), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-01-31 19:50:16,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:16,522 INFO L93 Difference]: Finished difference Result 125 states and 134 transitions.
[2022-01-31 19:50:16,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2022-01-31 19:50:16,522 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 27 states have internal predecessors, (55), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 81
[2022-01-31 19:50:16,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:16,523 INFO L225 Difference]: With dead ends: 125
[2022-01-31 19:50:16,523 INFO L226 Difference]: Without dead ends: 123
[2022-01-31 19:50:16,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=211, Invalid=2545, Unknown=0, NotChecked=0, Total=2756
[2022-01-31 19:50:16,524 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 57 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:16,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 123 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-31 19:50:16,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2022-01-31 19:50:16,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 94.
[2022-01-31 19:50:16,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 77 states have internal predecessors, (81), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8)
[2022-01-31 19:50:16,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions.
[2022-01-31 19:50:16,552 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 81
[2022-01-31 19:50:16,552 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:16,552 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions.
[2022-01-31 19:50:16,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 27 states have internal predecessors, (55), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-01-31 19:50:16,553 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions.
[2022-01-31 19:50:16,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84
[2022-01-31 19:50:16,553 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:16,553 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:16,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30
[2022-01-31 19:50:16,553 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:16,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:16,554 INFO L85 PathProgramCache]: Analyzing trace with hash -108778198, now seen corresponding path program 18 times
[2022-01-31 19:50:16,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:16,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505892318]
[2022-01-31 19:50:16,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:16,555 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:16,555 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:16,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:16,556 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:16,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:16,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:16,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31
[2022-01-31 19:50:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:16,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2022-01-31 19:50:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:16,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2022-01-31 19:50:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:16,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2022-01-31 19:50:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:16,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63
[2022-01-31 19:50:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:16,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71
[2022-01-31 19:50:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:16,724 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 19:50:16,724 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:16,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505892318]
[2022-01-31 19:50:16,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [505892318] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:16,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:16,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18
[2022-01-31 19:50:16,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39090094]
[2022-01-31 19:50:16,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:16,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2022-01-31 19:50:16,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:16,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2022-01-31 19:50:16,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306
[2022-01-31 19:50:16,726 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2022-01-31 19:50:17,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:17,051 INFO L93 Difference]: Finished difference Result 130 states and 140 transitions.
[2022-01-31 19:50:17,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2022-01-31 19:50:17,052 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 83
[2022-01-31 19:50:17,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:17,053 INFO L225 Difference]: With dead ends: 130
[2022-01-31 19:50:17,053 INFO L226 Difference]: Without dead ends: 94
[2022-01-31 19:50:17,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056
[2022-01-31 19:50:17,054 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 49 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:17,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 51 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:50:17,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2022-01-31 19:50:17,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94.
[2022-01-31 19:50:17,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 77 states have internal predecessors, (80), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8)
[2022-01-31 19:50:17,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions.
[2022-01-31 19:50:17,086 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 83
[2022-01-31 19:50:17,086 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:17,086 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions.
[2022-01-31 19:50:17,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2022-01-31 19:50:17,086 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions.
[2022-01-31 19:50:17,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87
[2022-01-31 19:50:17,087 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:17,087 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:17,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31
[2022-01-31 19:50:17,087 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:17,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:17,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1408843194, now seen corresponding path program 19 times
[2022-01-31 19:50:17,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:17,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520061976]
[2022-01-31 19:50:17,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:17,089 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:17,089 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:17,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:17,090 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:17,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:17,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34
[2022-01-31 19:50:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:17,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2022-01-31 19:50:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:17,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2022-01-31 19:50:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:17,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58
[2022-01-31 19:50:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:17,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66
[2022-01-31 19:50:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:17,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74
[2022-01-31 19:50:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:17,555 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 19:50:17,555 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:17,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520061976]
[2022-01-31 19:50:17,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [520061976] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:17,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:17,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30
[2022-01-31 19:50:17,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377340940]
[2022-01-31 19:50:17,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:17,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states
[2022-01-31 19:50:17,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:17,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2022-01-31 19:50:17,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=804, Unknown=0, NotChecked=0, Total=870
[2022-01-31 19:50:17,556 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand has 30 states, 29 states have (on average 1.896551724137931) internal successors, (55), 28 states have internal predecessors, (55), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2022-01-31 19:50:18,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:18,578 INFO L93 Difference]: Finished difference Result 133 states and 143 transitions.
[2022-01-31 19:50:18,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2022-01-31 19:50:18,578 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.896551724137931) internal successors, (55), 28 states have internal predecessors, (55), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 86
[2022-01-31 19:50:18,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:18,579 INFO L225 Difference]: With dead ends: 133
[2022-01-31 19:50:18,579 INFO L226 Difference]: Without dead ends: 131
[2022-01-31 19:50:18,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=2980, Unknown=0, NotChecked=0, Total=3192
[2022-01-31 19:50:18,580 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 61 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:18,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 121 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-31 19:50:18,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2022-01-31 19:50:18,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 125.
[2022-01-31 19:50:18,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 99 states have (on average 1.0404040404040404) internal successors, (103), 101 states have internal predecessors, (103), 16 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15)
[2022-01-31 19:50:18,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 134 transitions.
[2022-01-31 19:50:18,627 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 134 transitions. Word has length 86
[2022-01-31 19:50:18,627 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:18,627 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 134 transitions.
[2022-01-31 19:50:18,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.896551724137931) internal successors, (55), 28 states have internal predecessors, (55), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2022-01-31 19:50:18,628 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 134 transitions.
[2022-01-31 19:50:18,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90
[2022-01-31 19:50:18,628 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:18,628 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:18,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32
[2022-01-31 19:50:18,629 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:18,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:18,629 INFO L85 PathProgramCache]: Analyzing trace with hash 369936298, now seen corresponding path program 20 times
[2022-01-31 19:50:18,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:18,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403881982]
[2022-01-31 19:50:18,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:18,630 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:18,631 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:18,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:18,632 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:19,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:19,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2022-01-31 19:50:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:19,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2022-01-31 19:50:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:19,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53
[2022-01-31 19:50:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:19,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61
[2022-01-31 19:50:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:19,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69
[2022-01-31 19:50:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:19,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77
[2022-01-31 19:50:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:19,158 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 19:50:19,158 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:19,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403881982]
[2022-01-31 19:50:19,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1403881982] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:19,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:19,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31
[2022-01-31 19:50:19,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258946639]
[2022-01-31 19:50:19,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:19,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states
[2022-01-31 19:50:19,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:19,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants.
[2022-01-31 19:50:19,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=861, Unknown=0, NotChecked=0, Total=930
[2022-01-31 19:50:19,160 INFO L87 Difference]: Start difference. First operand 125 states and 134 transitions. Second operand has 31 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 29 states have internal predecessors, (58), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2022-01-31 19:50:20,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:20,562 INFO L93 Difference]: Finished difference Result 171 states and 189 transitions.
[2022-01-31 19:50:20,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2022-01-31 19:50:20,562 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 29 states have internal predecessors, (58), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 89
[2022-01-31 19:50:20,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:20,563 INFO L225 Difference]: With dead ends: 171
[2022-01-31 19:50:20,563 INFO L226 Difference]: Without dead ends: 169
[2022-01-31 19:50:20,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=296, Invalid=4126, Unknown=0, NotChecked=0, Total=4422
[2022-01-31 19:50:20,564 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 104 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 1852 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:20,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 130 Invalid, 1959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1852 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2022-01-31 19:50:20,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states.
[2022-01-31 19:50:20,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 126.
[2022-01-31 19:50:20,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 100 states have (on average 1.05) internal successors, (105), 102 states have internal predecessors, (105), 16 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15)
[2022-01-31 19:50:20,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 136 transitions.
[2022-01-31 19:50:20,613 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 136 transitions. Word has length 89
[2022-01-31 19:50:20,613 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:20,613 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 136 transitions.
[2022-01-31 19:50:20,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 29 states have internal predecessors, (58), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2022-01-31 19:50:20,613 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 136 transitions.
[2022-01-31 19:50:20,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92
[2022-01-31 19:50:20,613 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:20,614 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:20,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33
[2022-01-31 19:50:20,614 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:20,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:20,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1634654781, now seen corresponding path program 6 times
[2022-01-31 19:50:20,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:20,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432321831]
[2022-01-31 19:50:20,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:20,615 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:20,615 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:20,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:20,616 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:20,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:20,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2022-01-31 19:50:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:20,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2022-01-31 19:50:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:20,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2022-01-31 19:50:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:20,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63
[2022-01-31 19:50:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:20,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71
[2022-01-31 19:50:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:20,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2022-01-31 19:50:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:20,751 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 19:50:20,751 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:20,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432321831]
[2022-01-31 19:50:20,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [432321831] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:20,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:20,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2022-01-31 19:50:20,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137353774]
[2022-01-31 19:50:20,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:20,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-01-31 19:50:20,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:20,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-01-31 19:50:20,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210
[2022-01-31 19:50:20,753 INFO L87 Difference]: Start difference. First operand 126 states and 136 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:21,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:21,110 INFO L93 Difference]: Finished difference Result 249 states and 277 transitions.
[2022-01-31 19:50:21,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2022-01-31 19:50:21,110 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 91
[2022-01-31 19:50:21,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:21,111 INFO L225 Difference]: With dead ends: 249
[2022-01-31 19:50:21,111 INFO L226 Difference]: Without dead ends: 192
[2022-01-31 19:50:21,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=263, Invalid=439, Unknown=0, NotChecked=0, Total=702
[2022-01-31 19:50:21,112 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 138 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:21,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 21 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:50:21,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states.
[2022-01-31 19:50:21,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 128.
[2022-01-31 19:50:21,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 104 states have internal predecessors, (107), 16 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15)
[2022-01-31 19:50:21,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 138 transitions.
[2022-01-31 19:50:21,165 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 138 transitions. Word has length 91
[2022-01-31 19:50:21,165 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:21,165 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 138 transitions.
[2022-01-31 19:50:21,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:21,165 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 138 transitions.
[2022-01-31 19:50:21,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93
[2022-01-31 19:50:21,165 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:21,165 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:21,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34
[2022-01-31 19:50:21,166 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:21,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:21,166 INFO L85 PathProgramCache]: Analyzing trace with hash 683284422, now seen corresponding path program 21 times
[2022-01-31 19:50:21,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:21,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333386711]
[2022-01-31 19:50:21,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:21,168 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:21,168 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:21,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:21,169 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:21,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:21,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2022-01-31 19:50:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:21,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2022-01-31 19:50:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:21,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56
[2022-01-31 19:50:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:21,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2022-01-31 19:50:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:21,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72
[2022-01-31 19:50:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:21,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80
[2022-01-31 19:50:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:21,671 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 19:50:21,672 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:21,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333386711]
[2022-01-31 19:50:21,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1333386711] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:21,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:21,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32
[2022-01-31 19:50:21,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486707318]
[2022-01-31 19:50:21,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:21,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2022-01-31 19:50:21,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:21,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2022-01-31 19:50:21,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992
[2022-01-31 19:50:21,673 INFO L87 Difference]: Start difference. First operand 128 states and 138 transitions. Second operand has 32 states, 31 states have (on average 1.967741935483871) internal successors, (61), 30 states have internal predecessors, (61), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2022-01-31 19:50:22,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:22,867 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions.
[2022-01-31 19:50:22,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2022-01-31 19:50:22,868 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.967741935483871) internal successors, (61), 30 states have internal predecessors, (61), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 92
[2022-01-31 19:50:22,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:22,869 INFO L225 Difference]: With dead ends: 140
[2022-01-31 19:50:22,869 INFO L226 Difference]: Without dead ends: 138
[2022-01-31 19:50:22,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=236, Invalid=3186, Unknown=0, NotChecked=0, Total=3422
[2022-01-31 19:50:22,870 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 101 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:22,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 132 Invalid, 1788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2022-01-31 19:50:22,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states.
[2022-01-31 19:50:22,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105.
[2022-01-31 19:50:22,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 86 states have internal predecessors, (90), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9)
[2022-01-31 19:50:22,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions.
[2022-01-31 19:50:22,904 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 92
[2022-01-31 19:50:22,904 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:22,904 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions.
[2022-01-31 19:50:22,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.967741935483871) internal successors, (61), 30 states have internal predecessors, (61), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2022-01-31 19:50:22,904 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions.
[2022-01-31 19:50:22,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95
[2022-01-31 19:50:22,905 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:22,905 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:22,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35
[2022-01-31 19:50:22,905 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:22,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:22,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1491320800, now seen corresponding path program 22 times
[2022-01-31 19:50:22,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:22,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361753921]
[2022-01-31 19:50:22,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:22,907 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:22,907 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:22,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:22,908 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:23,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:23,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34
[2022-01-31 19:50:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:23,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2022-01-31 19:50:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:23,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2022-01-31 19:50:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:23,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58
[2022-01-31 19:50:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:23,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66
[2022-01-31 19:50:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:23,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74
[2022-01-31 19:50:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:23,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82
[2022-01-31 19:50:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:23,095 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 19:50:23,095 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:23,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361753921]
[2022-01-31 19:50:23,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [361753921] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:23,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:23,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20
[2022-01-31 19:50:23,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696508918]
[2022-01-31 19:50:23,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:23,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2022-01-31 19:50:23,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:23,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2022-01-31 19:50:23,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380
[2022-01-31 19:50:23,097 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 19 states have internal predecessors, (58), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2022-01-31 19:50:23,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:23,471 INFO L93 Difference]: Finished difference Result 145 states and 156 transitions.
[2022-01-31 19:50:23,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2022-01-31 19:50:23,471 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 19 states have internal predecessors, (58), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 94
[2022-01-31 19:50:23,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:23,472 INFO L225 Difference]: With dead ends: 145
[2022-01-31 19:50:23,472 INFO L226 Difference]: Without dead ends: 105
[2022-01-31 19:50:23,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=293, Invalid=1039, Unknown=0, NotChecked=0, Total=1332
[2022-01-31 19:50:23,473 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 52 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:23,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 58 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:50:23,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2022-01-31 19:50:23,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105.
[2022-01-31 19:50:23,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 85 states have (on average 1.0470588235294118) internal successors, (89), 86 states have internal predecessors, (89), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9)
[2022-01-31 19:50:23,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 108 transitions.
[2022-01-31 19:50:23,507 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 108 transitions. Word has length 94
[2022-01-31 19:50:23,507 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:23,507 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 108 transitions.
[2022-01-31 19:50:23,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 19 states have internal predecessors, (58), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2022-01-31 19:50:23,507 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 108 transitions.
[2022-01-31 19:50:23,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2022-01-31 19:50:23,507 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:23,508 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:23,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36
[2022-01-31 19:50:23,508 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:23,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:23,508 INFO L85 PathProgramCache]: Analyzing trace with hash -334978684, now seen corresponding path program 23 times
[2022-01-31 19:50:23,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:23,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987948985]
[2022-01-31 19:50:23,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:23,509 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:23,510 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:23,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:23,510 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:24,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:24,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2022-01-31 19:50:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:24,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2022-01-31 19:50:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:24,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53
[2022-01-31 19:50:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:24,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61
[2022-01-31 19:50:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:24,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69
[2022-01-31 19:50:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:24,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77
[2022-01-31 19:50:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:24,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85
[2022-01-31 19:50:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:24,097 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 19:50:24,097 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:24,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987948985]
[2022-01-31 19:50:24,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1987948985] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:24,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:24,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33
[2022-01-31 19:50:24,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805792156]
[2022-01-31 19:50:24,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:24,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states
[2022-01-31 19:50:24,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:24,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2022-01-31 19:50:24,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=983, Unknown=0, NotChecked=0, Total=1056
[2022-01-31 19:50:24,099 INFO L87 Difference]: Start difference. First operand 105 states and 108 transitions. Second operand has 33 states, 32 states have (on average 1.90625) internal successors, (61), 31 states have internal predecessors, (61), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2022-01-31 19:50:25,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:25,463 INFO L93 Difference]: Finished difference Result 148 states and 159 transitions.
[2022-01-31 19:50:25,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2022-01-31 19:50:25,464 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.90625) internal successors, (61), 31 states have internal predecessors, (61), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 97
[2022-01-31 19:50:25,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:25,465 INFO L225 Difference]: With dead ends: 148
[2022-01-31 19:50:25,465 INFO L226 Difference]: Without dead ends: 146
[2022-01-31 19:50:25,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=235, Invalid=3671, Unknown=0, NotChecked=0, Total=3906
[2022-01-31 19:50:25,466 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 65 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2240 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:25,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 157 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2240 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-01-31 19:50:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states.
[2022-01-31 19:50:25,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 140.
[2022-01-31 19:50:25,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 111 states have (on average 1.0360360360360361) internal successors, (115), 113 states have internal predecessors, (115), 18 states have call successors, (18), 11 states have call predecessors, (18), 10 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17)
[2022-01-31 19:50:25,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 150 transitions.
[2022-01-31 19:50:25,540 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 150 transitions. Word has length 97
[2022-01-31 19:50:25,540 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:25,540 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 150 transitions.
[2022-01-31 19:50:25,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.90625) internal successors, (61), 31 states have internal predecessors, (61), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2022-01-31 19:50:25,540 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 150 transitions.
[2022-01-31 19:50:25,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101
[2022-01-31 19:50:25,541 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:25,541 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:25,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37
[2022-01-31 19:50:25,541 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:25,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:25,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1679682144, now seen corresponding path program 24 times
[2022-01-31 19:50:25,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:25,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232491657]
[2022-01-31 19:50:25,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:25,543 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:25,544 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:25,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:25,545 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:26,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:26,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2022-01-31 19:50:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:26,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2022-01-31 19:50:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:26,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56
[2022-01-31 19:50:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:26,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2022-01-31 19:50:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:26,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72
[2022-01-31 19:50:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:26,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80
[2022-01-31 19:50:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:26,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88
[2022-01-31 19:50:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:26,143 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 19:50:26,143 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:26,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232491657]
[2022-01-31 19:50:26,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [232491657] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:26,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:26,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34
[2022-01-31 19:50:26,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479864472]
[2022-01-31 19:50:26,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:26,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states
[2022-01-31 19:50:26,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:26,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2022-01-31 19:50:26,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1046, Unknown=0, NotChecked=0, Total=1122
[2022-01-31 19:50:26,145 INFO L87 Difference]: Start difference. First operand 140 states and 150 transitions. Second operand has 34 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 32 states have internal predecessors, (64), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2022-01-31 19:50:27,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:27,791 INFO L93 Difference]: Finished difference Result 190 states and 210 transitions.
[2022-01-31 19:50:27,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2022-01-31 19:50:27,791 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 32 states have internal predecessors, (64), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 100
[2022-01-31 19:50:27,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:27,792 INFO L225 Difference]: With dead ends: 190
[2022-01-31 19:50:27,792 INFO L226 Difference]: Without dead ends: 188
[2022-01-31 19:50:27,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=328, Invalid=5074, Unknown=0, NotChecked=0, Total=5402
[2022-01-31 19:50:27,793 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 92 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 2103 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:27,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 132 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2103 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-01-31 19:50:27,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states.
[2022-01-31 19:50:27,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 141.
[2022-01-31 19:50:27,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 112 states have (on average 1.0446428571428572) internal successors, (117), 114 states have internal predecessors, (117), 18 states have call successors, (18), 11 states have call predecessors, (18), 10 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17)
[2022-01-31 19:50:27,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 152 transitions.
[2022-01-31 19:50:27,851 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 152 transitions. Word has length 100
[2022-01-31 19:50:27,851 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:27,851 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 152 transitions.
[2022-01-31 19:50:27,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 32 states have internal predecessors, (64), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2022-01-31 19:50:27,851 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 152 transitions.
[2022-01-31 19:50:27,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103
[2022-01-31 19:50:27,851 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:27,851 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:27,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38
[2022-01-31 19:50:27,852 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:27,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:27,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1800057785, now seen corresponding path program 7 times
[2022-01-31 19:50:27,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:27,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268005134]
[2022-01-31 19:50:27,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:27,853 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:27,853 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:27,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:27,854 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:27,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:27,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2022-01-31 19:50:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:27,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2022-01-31 19:50:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:27,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58
[2022-01-31 19:50:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:27,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66
[2022-01-31 19:50:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:27,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74
[2022-01-31 19:50:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:27,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82
[2022-01-31 19:50:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:27,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90
[2022-01-31 19:50:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:28,000 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 19:50:28,000 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:28,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268005134]
[2022-01-31 19:50:28,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1268005134] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:28,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:28,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2022-01-31 19:50:28,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629149350]
[2022-01-31 19:50:28,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:28,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-01-31 19:50:28,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:28,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-01-31 19:50:28,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240
[2022-01-31 19:50:28,001 INFO L87 Difference]: Start difference. First operand 141 states and 152 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:28,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:28,344 INFO L93 Difference]: Finished difference Result 280 states and 311 transitions.
[2022-01-31 19:50:28,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2022-01-31 19:50:28,344 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 102
[2022-01-31 19:50:28,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:28,345 INFO L225 Difference]: With dead ends: 280
[2022-01-31 19:50:28,345 INFO L226 Difference]: Without dead ends: 215
[2022-01-31 19:50:28,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=304, Invalid=508, Unknown=0, NotChecked=0, Total=812
[2022-01-31 19:50:28,346 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 148 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:28,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 21 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:50:28,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states.
[2022-01-31 19:50:28,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 143.
[2022-01-31 19:50:28,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 114 states have (on average 1.043859649122807) internal successors, (119), 116 states have internal predecessors, (119), 18 states have call successors, (18), 11 states have call predecessors, (18), 10 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17)
[2022-01-31 19:50:28,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 154 transitions.
[2022-01-31 19:50:28,413 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 154 transitions. Word has length 102
[2022-01-31 19:50:28,413 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:28,414 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 154 transitions.
[2022-01-31 19:50:28,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:28,414 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 154 transitions.
[2022-01-31 19:50:28,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104
[2022-01-31 19:50:28,414 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:28,414 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:28,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39
[2022-01-31 19:50:28,414 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:28,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:28,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1714478084, now seen corresponding path program 25 times
[2022-01-31 19:50:28,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:28,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299725452]
[2022-01-31 19:50:28,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:28,416 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:28,416 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:28,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:28,417 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:29,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:29,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2022-01-31 19:50:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:29,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2022-01-31 19:50:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:29,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2022-01-31 19:50:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:29,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67
[2022-01-31 19:50:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:29,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75
[2022-01-31 19:50:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:29,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2022-01-31 19:50:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:29,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2022-01-31 19:50:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:29,035 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 19:50:29,035 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:29,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299725452]
[2022-01-31 19:50:29,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [299725452] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:29,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:29,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35
[2022-01-31 19:50:29,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253160733]
[2022-01-31 19:50:29,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:29,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states
[2022-01-31 19:50:29,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:29,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2022-01-31 19:50:29,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1110, Unknown=0, NotChecked=0, Total=1190
[2022-01-31 19:50:29,036 INFO L87 Difference]: Start difference. First operand 143 states and 154 transitions. Second operand has 35 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 33 states have internal predecessors, (67), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2022-01-31 19:50:30,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:30,329 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions.
[2022-01-31 19:50:30,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2022-01-31 19:50:30,329 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 33 states have internal predecessors, (67), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 103
[2022-01-31 19:50:30,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:30,330 INFO L225 Difference]: With dead ends: 155
[2022-01-31 19:50:30,330 INFO L226 Difference]: Without dead ends: 153
[2022-01-31 19:50:30,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=261, Invalid=3899, Unknown=0, NotChecked=0, Total=4160
[2022-01-31 19:50:30,331 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 89 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2039 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 2137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:30,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 146 Invalid, 2137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2039 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2022-01-31 19:50:30,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states.
[2022-01-31 19:50:30,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 116.
[2022-01-31 19:50:30,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 94 states have (on average 1.053191489361702) internal successors, (99), 95 states have internal predecessors, (99), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10)
[2022-01-31 19:50:30,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions.
[2022-01-31 19:50:30,382 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 103
[2022-01-31 19:50:30,382 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:30,382 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 120 transitions.
[2022-01-31 19:50:30,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 33 states have internal predecessors, (67), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2022-01-31 19:50:30,382 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 120 transitions.
[2022-01-31 19:50:30,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106
[2022-01-31 19:50:30,382 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:30,382 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:30,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40
[2022-01-31 19:50:30,383 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:30,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:30,383 INFO L85 PathProgramCache]: Analyzing trace with hash -614334114, now seen corresponding path program 26 times
[2022-01-31 19:50:30,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:30,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758692552]
[2022-01-31 19:50:30,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:30,384 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:30,385 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:30,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:30,386 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:30,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:30,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2022-01-31 19:50:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:30,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2022-01-31 19:50:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:30,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53
[2022-01-31 19:50:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:30,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61
[2022-01-31 19:50:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:30,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69
[2022-01-31 19:50:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:30,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77
[2022-01-31 19:50:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:30,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85
[2022-01-31 19:50:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:30,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93
[2022-01-31 19:50:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:30,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 19:50:30,609 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:30,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758692552]
[2022-01-31 19:50:30,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1758692552] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:30,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:30,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22
[2022-01-31 19:50:30,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540168787]
[2022-01-31 19:50:30,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:30,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2022-01-31 19:50:30,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:30,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2022-01-31 19:50:30,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462
[2022-01-31 19:50:30,610 INFO L87 Difference]: Start difference. First operand 116 states and 120 transitions. Second operand has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 21 states have internal predecessors, (64), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2022-01-31 19:50:31,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:31,158 INFO L93 Difference]: Finished difference Result 160 states and 172 transitions.
[2022-01-31 19:50:31,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2022-01-31 19:50:31,159 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 21 states have internal predecessors, (64), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 105
[2022-01-31 19:50:31,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:31,160 INFO L225 Difference]: With dead ends: 160
[2022-01-31 19:50:31,160 INFO L226 Difference]: Without dead ends: 116
[2022-01-31 19:50:31,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=355, Invalid=1285, Unknown=0, NotChecked=0, Total=1640
[2022-01-31 19:50:31,161 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 55 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:31,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 60 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 19:50:31,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states.
[2022-01-31 19:50:31,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116.
[2022-01-31 19:50:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 94 states have (on average 1.0425531914893618) internal successors, (98), 95 states have internal predecessors, (98), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10)
[2022-01-31 19:50:31,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 119 transitions.
[2022-01-31 19:50:31,221 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 119 transitions. Word has length 105
[2022-01-31 19:50:31,221 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:31,221 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 119 transitions.
[2022-01-31 19:50:31,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 21 states have internal predecessors, (64), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2022-01-31 19:50:31,221 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 119 transitions.
[2022-01-31 19:50:31,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109
[2022-01-31 19:50:31,222 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:31,222 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:31,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41
[2022-01-31 19:50:31,222 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:31,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:31,222 INFO L85 PathProgramCache]: Analyzing trace with hash -603743878, now seen corresponding path program 27 times
[2022-01-31 19:50:31,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:31,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740774815]
[2022-01-31 19:50:31,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:31,225 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:31,225 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:31,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:31,226 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:31,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:31,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2022-01-31 19:50:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:31,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2022-01-31 19:50:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:31,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56
[2022-01-31 19:50:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:31,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2022-01-31 19:50:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:31,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72
[2022-01-31 19:50:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:31,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80
[2022-01-31 19:50:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:31,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88
[2022-01-31 19:50:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:31,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96
[2022-01-31 19:50:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:31,853 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 19:50:31,853 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:31,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740774815]
[2022-01-31 19:50:31,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1740774815] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:31,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:31,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36
[2022-01-31 19:50:31,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786180808]
[2022-01-31 19:50:31,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:31,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states
[2022-01-31 19:50:31,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:31,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2022-01-31 19:50:31,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1180, Unknown=0, NotChecked=0, Total=1260
[2022-01-31 19:50:31,855 INFO L87 Difference]: Start difference. First operand 116 states and 119 transitions. Second operand has 36 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 34 states have internal predecessors, (67), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2022-01-31 19:50:33,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:33,403 INFO L93 Difference]: Finished difference Result 163 states and 175 transitions.
[2022-01-31 19:50:33,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2022-01-31 19:50:33,406 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 34 states have internal predecessors, (67), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 108
[2022-01-31 19:50:33,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:33,407 INFO L225 Difference]: With dead ends: 163
[2022-01-31 19:50:33,407 INFO L226 Difference]: Without dead ends: 161
[2022-01-31 19:50:33,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=258, Invalid=4434, Unknown=0, NotChecked=0, Total=4692
[2022-01-31 19:50:33,408 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 69 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2604 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:33,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 167 Invalid, 2681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2604 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2022-01-31 19:50:33,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states.
[2022-01-31 19:50:33,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 155.
[2022-01-31 19:50:33,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 123 states have (on average 1.032520325203252) internal successors, (127), 125 states have internal predecessors, (127), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19)
[2022-01-31 19:50:33,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions.
[2022-01-31 19:50:33,486 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 108
[2022-01-31 19:50:33,487 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:33,487 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions.
[2022-01-31 19:50:33,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 34 states have internal predecessors, (67), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2022-01-31 19:50:33,487 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions.
[2022-01-31 19:50:33,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112
[2022-01-31 19:50:33,488 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:33,488 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:33,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42
[2022-01-31 19:50:33,488 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:33,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:33,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1357364190, now seen corresponding path program 28 times
[2022-01-31 19:50:33,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:33,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821592324]
[2022-01-31 19:50:33,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:33,490 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:33,490 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:33,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:33,492 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:34,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:34,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2022-01-31 19:50:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:34,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2022-01-31 19:50:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:34,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2022-01-31 19:50:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:34,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67
[2022-01-31 19:50:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:34,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75
[2022-01-31 19:50:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:34,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2022-01-31 19:50:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:34,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2022-01-31 19:50:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:34,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2022-01-31 19:50:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:34,156 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 19:50:34,156 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:34,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821592324]
[2022-01-31 19:50:34,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [821592324] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:34,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:34,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37
[2022-01-31 19:50:34,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864077159]
[2022-01-31 19:50:34,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:34,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states
[2022-01-31 19:50:34,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:34,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2022-01-31 19:50:34,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1249, Unknown=0, NotChecked=0, Total=1332
[2022-01-31 19:50:34,157 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand has 37 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2022-01-31 19:50:36,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:36,096 INFO L93 Difference]: Finished difference Result 209 states and 231 transitions.
[2022-01-31 19:50:36,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2022-01-31 19:50:36,096 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 111
[2022-01-31 19:50:36,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:36,097 INFO L225 Difference]: With dead ends: 209
[2022-01-31 19:50:36,097 INFO L226 Difference]: Without dead ends: 207
[2022-01-31 19:50:36,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1522 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=360, Invalid=6120, Unknown=0, NotChecked=0, Total=6480
[2022-01-31 19:50:36,098 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 99 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2807 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:36,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 161 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2807 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-01-31 19:50:36,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states.
[2022-01-31 19:50:36,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 156.
[2022-01-31 19:50:36,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 124 states have (on average 1.0403225806451613) internal successors, (129), 126 states have internal predecessors, (129), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19)
[2022-01-31 19:50:36,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 168 transitions.
[2022-01-31 19:50:36,176 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 168 transitions. Word has length 111
[2022-01-31 19:50:36,176 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:36,176 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 168 transitions.
[2022-01-31 19:50:36,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2022-01-31 19:50:36,176 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 168 transitions.
[2022-01-31 19:50:36,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114
[2022-01-31 19:50:36,177 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:36,177 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:36,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43
[2022-01-31 19:50:36,177 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:36,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:36,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1191323639, now seen corresponding path program 8 times
[2022-01-31 19:50:36,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:36,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807684928]
[2022-01-31 19:50:36,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:36,178 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:36,179 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:36,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:36,180 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:36,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:36,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2022-01-31 19:50:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:36,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53
[2022-01-31 19:50:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:36,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61
[2022-01-31 19:50:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:36,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69
[2022-01-31 19:50:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:36,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77
[2022-01-31 19:50:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:36,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85
[2022-01-31 19:50:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:36,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93
[2022-01-31 19:50:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:36,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101
[2022-01-31 19:50:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:36,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 19:50:36,345 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:36,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807684928]
[2022-01-31 19:50:36,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [807684928] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:36,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:36,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17
[2022-01-31 19:50:36,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94435915]
[2022-01-31 19:50:36,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:36,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2022-01-31 19:50:36,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:36,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2022-01-31 19:50:36,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272
[2022-01-31 19:50:36,346 INFO L87 Difference]: Start difference. First operand 156 states and 168 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:36,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:36,811 INFO L93 Difference]: Finished difference Result 311 states and 345 transitions.
[2022-01-31 19:50:36,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2022-01-31 19:50:36,811 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 113
[2022-01-31 19:50:36,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:36,813 INFO L225 Difference]: With dead ends: 311
[2022-01-31 19:50:36,813 INFO L226 Difference]: Without dead ends: 238
[2022-01-31 19:50:36,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=348, Invalid=582, Unknown=0, NotChecked=0, Total=930
[2022-01-31 19:50:36,814 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 153 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:36,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 25 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:50:36,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states.
[2022-01-31 19:50:36,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 158.
[2022-01-31 19:50:36,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 126 states have (on average 1.0396825396825398) internal successors, (131), 128 states have internal predecessors, (131), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19)
[2022-01-31 19:50:36,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 170 transitions.
[2022-01-31 19:50:36,923 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 170 transitions. Word has length 113
[2022-01-31 19:50:36,924 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:36,924 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 170 transitions.
[2022-01-31 19:50:36,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:36,924 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 170 transitions.
[2022-01-31 19:50:36,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115
[2022-01-31 19:50:36,925 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:36,925 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:36,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44
[2022-01-31 19:50:36,925 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:36,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:36,925 INFO L85 PathProgramCache]: Analyzing trace with hash 287690490, now seen corresponding path program 29 times
[2022-01-31 19:50:36,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:36,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206031472]
[2022-01-31 19:50:36,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:36,927 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:36,927 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:36,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:36,929 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:37,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:37,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46
[2022-01-31 19:50:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:37,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2022-01-31 19:50:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:37,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62
[2022-01-31 19:50:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:37,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2022-01-31 19:50:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:37,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78
[2022-01-31 19:50:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:37,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2022-01-31 19:50:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:37,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94
[2022-01-31 19:50:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:37,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102
[2022-01-31 19:50:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:37,622 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 19:50:37,622 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:37,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206031472]
[2022-01-31 19:50:37,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [206031472] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:37,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:37,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38
[2022-01-31 19:50:37,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107632]
[2022-01-31 19:50:37,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:37,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states
[2022-01-31 19:50:37,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:37,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2022-01-31 19:50:37,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1319, Unknown=0, NotChecked=0, Total=1406
[2022-01-31 19:50:37,624 INFO L87 Difference]: Start difference. First operand 158 states and 170 transitions. Second operand has 38 states, 37 states have (on average 1.972972972972973) internal successors, (73), 36 states have internal predecessors, (73), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2022-01-31 19:50:39,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:39,329 INFO L93 Difference]: Finished difference Result 170 states and 182 transitions.
[2022-01-31 19:50:39,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2022-01-31 19:50:39,329 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.972972972972973) internal successors, (73), 36 states have internal predecessors, (73), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 114
[2022-01-31 19:50:39,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:39,330 INFO L225 Difference]: With dead ends: 170
[2022-01-31 19:50:39,330 INFO L226 Difference]: Without dead ends: 168
[2022-01-31 19:50:39,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=286, Invalid=4684, Unknown=0, NotChecked=0, Total=4970
[2022-01-31 19:50:39,331 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 72 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 2684 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:39,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 172 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2684 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-01-31 19:50:39,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states.
[2022-01-31 19:50:39,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 127.
[2022-01-31 19:50:39,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 104 states have internal predecessors, (108), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11)
[2022-01-31 19:50:39,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 131 transitions.
[2022-01-31 19:50:39,401 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 131 transitions. Word has length 114
[2022-01-31 19:50:39,402 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:39,402 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 131 transitions.
[2022-01-31 19:50:39,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.972972972972973) internal successors, (73), 36 states have internal predecessors, (73), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2022-01-31 19:50:39,402 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 131 transitions.
[2022-01-31 19:50:39,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117
[2022-01-31 19:50:39,403 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:39,403 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:39,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45
[2022-01-31 19:50:39,403 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:39,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:39,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1304911020, now seen corresponding path program 30 times
[2022-01-31 19:50:39,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:39,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128409818]
[2022-01-31 19:50:39,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:39,405 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:39,405 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:39,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:39,407 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:39,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:39,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2022-01-31 19:50:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:39,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2022-01-31 19:50:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:39,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56
[2022-01-31 19:50:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:39,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2022-01-31 19:50:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:39,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72
[2022-01-31 19:50:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:39,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80
[2022-01-31 19:50:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:39,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88
[2022-01-31 19:50:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:39,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96
[2022-01-31 19:50:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:39,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104
[2022-01-31 19:50:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:39,649 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 19:50:39,649 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:39,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128409818]
[2022-01-31 19:50:39,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2128409818] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:39,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:39,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24
[2022-01-31 19:50:39,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013257505]
[2022-01-31 19:50:39,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:39,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-01-31 19:50:39,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:39,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-01-31 19:50:39,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552
[2022-01-31 19:50:39,651 INFO L87 Difference]: Start difference. First operand 127 states and 131 transitions. Second operand has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2022-01-31 19:50:40,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:40,141 INFO L93 Difference]: Finished difference Result 175 states and 188 transitions.
[2022-01-31 19:50:40,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2022-01-31 19:50:40,142 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 116
[2022-01-31 19:50:40,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:40,142 INFO L225 Difference]: With dead ends: 175
[2022-01-31 19:50:40,143 INFO L226 Difference]: Without dead ends: 127
[2022-01-31 19:50:40,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=423, Invalid=1557, Unknown=0, NotChecked=0, Total=1980
[2022-01-31 19:50:40,143 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 58 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:40,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 67 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 19:50:40,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states.
[2022-01-31 19:50:40,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127.
[2022-01-31 19:50:40,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 103 states have (on average 1.0388349514563107) internal successors, (107), 104 states have internal predecessors, (107), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11)
[2022-01-31 19:50:40,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 130 transitions.
[2022-01-31 19:50:40,218 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 130 transitions. Word has length 116
[2022-01-31 19:50:40,218 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:40,218 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 130 transitions.
[2022-01-31 19:50:40,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2022-01-31 19:50:40,219 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 130 transitions.
[2022-01-31 19:50:40,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120
[2022-01-31 19:50:40,219 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:40,219 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:40,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46
[2022-01-31 19:50:40,219 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:40,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:40,220 INFO L85 PathProgramCache]: Analyzing trace with hash 76947896, now seen corresponding path program 31 times
[2022-01-31 19:50:40,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:40,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627698620]
[2022-01-31 19:50:40,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:40,221 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:40,222 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:40,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:40,223 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:40,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:40,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2022-01-31 19:50:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:40,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2022-01-31 19:50:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:40,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2022-01-31 19:50:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:40,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67
[2022-01-31 19:50:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:40,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75
[2022-01-31 19:50:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:40,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2022-01-31 19:50:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:40,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2022-01-31 19:50:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:40,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2022-01-31 19:50:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:40,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107
[2022-01-31 19:50:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:40,972 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 19:50:40,972 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:40,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627698620]
[2022-01-31 19:50:40,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [627698620] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:40,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:40,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39
[2022-01-31 19:50:40,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329023680]
[2022-01-31 19:50:40,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:40,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states
[2022-01-31 19:50:40,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:40,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants.
[2022-01-31 19:50:40,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1395, Unknown=0, NotChecked=0, Total=1482
[2022-01-31 19:50:40,973 INFO L87 Difference]: Start difference. First operand 127 states and 130 transitions. Second operand has 39 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 37 states have internal predecessors, (73), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2022-01-31 19:50:42,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:42,682 INFO L93 Difference]: Finished difference Result 178 states and 191 transitions.
[2022-01-31 19:50:42,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2022-01-31 19:50:42,682 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 37 states have internal predecessors, (73), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 119
[2022-01-31 19:50:42,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:42,683 INFO L225 Difference]: With dead ends: 178
[2022-01-31 19:50:42,683 INFO L226 Difference]: Without dead ends: 176
[2022-01-31 19:50:42,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=281, Invalid=5269, Unknown=0, NotChecked=0, Total=5550
[2022-01-31 19:50:42,684 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 73 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2784 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:42,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 164 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2784 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-01-31 19:50:42,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states.
[2022-01-31 19:50:42,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 170.
[2022-01-31 19:50:42,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 135 states have (on average 1.0296296296296297) internal successors, (139), 137 states have internal predecessors, (139), 22 states have call successors, (22), 13 states have call predecessors, (22), 12 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21)
[2022-01-31 19:50:42,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 182 transitions.
[2022-01-31 19:50:42,774 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 182 transitions. Word has length 119
[2022-01-31 19:50:42,775 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:42,775 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 182 transitions.
[2022-01-31 19:50:42,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 37 states have internal predecessors, (73), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2022-01-31 19:50:42,775 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 182 transitions.
[2022-01-31 19:50:42,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123
[2022-01-31 19:50:42,776 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:42,776 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:42,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47
[2022-01-31 19:50:42,776 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:42,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:42,776 INFO L85 PathProgramCache]: Analyzing trace with hash -225617708, now seen corresponding path program 32 times
[2022-01-31 19:50:42,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:42,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341962896]
[2022-01-31 19:50:42,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:42,778 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:42,778 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:42,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:42,780 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:43,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:43,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46
[2022-01-31 19:50:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:43,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2022-01-31 19:50:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:43,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62
[2022-01-31 19:50:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:43,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2022-01-31 19:50:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:43,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78
[2022-01-31 19:50:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:43,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2022-01-31 19:50:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:43,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94
[2022-01-31 19:50:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:43,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102
[2022-01-31 19:50:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:43,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110
[2022-01-31 19:50:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:43,513 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 19:50:43,513 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:43,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341962896]
[2022-01-31 19:50:43,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [341962896] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:43,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:43,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40
[2022-01-31 19:50:43,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206360642]
[2022-01-31 19:50:43,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:43,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states
[2022-01-31 19:50:43,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:43,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants.
[2022-01-31 19:50:43,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1470, Unknown=0, NotChecked=0, Total=1560
[2022-01-31 19:50:43,515 INFO L87 Difference]: Start difference. First operand 170 states and 182 transitions. Second operand has 40 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 38 states have internal predecessors, (76), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2022-01-31 19:50:45,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:45,841 INFO L93 Difference]: Finished difference Result 228 states and 252 transitions.
[2022-01-31 19:50:45,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states.
[2022-01-31 19:50:45,841 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 38 states have internal predecessors, (76), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 122
[2022-01-31 19:50:45,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:45,842 INFO L225 Difference]: With dead ends: 228
[2022-01-31 19:50:45,842 INFO L226 Difference]: Without dead ends: 226
[2022-01-31 19:50:45,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1828 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=392, Invalid=7264, Unknown=0, NotChecked=0, Total=7656
[2022-01-31 19:50:45,843 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 129 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 3384 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 3528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 3384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:45,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 174 Invalid, 3528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 3384 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time]
[2022-01-31 19:50:45,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states.
[2022-01-31 19:50:45,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 171.
[2022-01-31 19:50:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 136 states have (on average 1.036764705882353) internal successors, (141), 138 states have internal predecessors, (141), 22 states have call successors, (22), 13 states have call predecessors, (22), 12 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21)
[2022-01-31 19:50:45,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 184 transitions.
[2022-01-31 19:50:45,932 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 184 transitions. Word has length 122
[2022-01-31 19:50:45,932 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:45,932 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 184 transitions.
[2022-01-31 19:50:45,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 38 states have internal predecessors, (76), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2022-01-31 19:50:45,932 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 184 transitions.
[2022-01-31 19:50:45,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125
[2022-01-31 19:50:45,933 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:45,933 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:45,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48
[2022-01-31 19:50:45,933 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:45,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:45,934 INFO L85 PathProgramCache]: Analyzing trace with hash -415677203, now seen corresponding path program 9 times
[2022-01-31 19:50:45,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:45,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801505284]
[2022-01-31 19:50:45,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:45,935 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:45,935 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:45,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:45,937 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:46,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:46,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2022-01-31 19:50:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:46,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56
[2022-01-31 19:50:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:46,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2022-01-31 19:50:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:46,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72
[2022-01-31 19:50:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:46,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80
[2022-01-31 19:50:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:46,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88
[2022-01-31 19:50:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:46,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96
[2022-01-31 19:50:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:46,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104
[2022-01-31 19:50:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:46,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112
[2022-01-31 19:50:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:46,113 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 19:50:46,113 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:46,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801505284]
[2022-01-31 19:50:46,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1801505284] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:46,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:46,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18
[2022-01-31 19:50:46,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394551121]
[2022-01-31 19:50:46,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:46,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2022-01-31 19:50:46,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:46,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2022-01-31 19:50:46,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306
[2022-01-31 19:50:46,114 INFO L87 Difference]: Start difference. First operand 171 states and 184 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:46,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:46,643 INFO L93 Difference]: Finished difference Result 342 states and 379 transitions.
[2022-01-31 19:50:46,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2022-01-31 19:50:46,643 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 124
[2022-01-31 19:50:46,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:46,644 INFO L225 Difference]: With dead ends: 342
[2022-01-31 19:50:46,644 INFO L226 Difference]: Without dead ends: 261
[2022-01-31 19:50:46,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=395, Invalid=661, Unknown=0, NotChecked=0, Total=1056
[2022-01-31 19:50:46,645 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 160 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:46,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 23 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:50:46,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states.
[2022-01-31 19:50:46,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 173.
[2022-01-31 19:50:46,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 138 states have (on average 1.036231884057971) internal successors, (143), 140 states have internal predecessors, (143), 22 states have call successors, (22), 13 states have call predecessors, (22), 12 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21)
[2022-01-31 19:50:46,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 186 transitions.
[2022-01-31 19:50:46,752 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 186 transitions. Word has length 124
[2022-01-31 19:50:46,752 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:46,752 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 186 transitions.
[2022-01-31 19:50:46,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:46,752 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 186 transitions.
[2022-01-31 19:50:46,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126
[2022-01-31 19:50:46,753 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:46,753 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:46,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49
[2022-01-31 19:50:46,753 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:46,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:46,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1178827832, now seen corresponding path program 33 times
[2022-01-31 19:50:46,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:46,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664728700]
[2022-01-31 19:50:46,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:46,755 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:46,755 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:46,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:46,756 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:47,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:47,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2022-01-31 19:50:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:47,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2022-01-31 19:50:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:47,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2022-01-31 19:50:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:47,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73
[2022-01-31 19:50:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:47,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81
[2022-01-31 19:50:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:47,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2022-01-31 19:50:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:47,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97
[2022-01-31 19:50:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:47,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2022-01-31 19:50:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:47,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113
[2022-01-31 19:50:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:47,507 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 19:50:47,507 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:47,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664728700]
[2022-01-31 19:50:47,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1664728700] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:47,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:47,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41
[2022-01-31 19:50:47,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100995363]
[2022-01-31 19:50:47,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:47,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states
[2022-01-31 19:50:47,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:47,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants.
[2022-01-31 19:50:47,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1546, Unknown=0, NotChecked=0, Total=1640
[2022-01-31 19:50:47,509 INFO L87 Difference]: Start difference. First operand 173 states and 186 transitions. Second operand has 41 states, 40 states have (on average 1.975) internal successors, (79), 39 states have internal predecessors, (79), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2022-01-31 19:50:49,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:49,238 INFO L93 Difference]: Finished difference Result 185 states and 198 transitions.
[2022-01-31 19:50:49,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2022-01-31 19:50:49,238 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.975) internal successors, (79), 39 states have internal predecessors, (79), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 125
[2022-01-31 19:50:49,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:49,239 INFO L225 Difference]: With dead ends: 185
[2022-01-31 19:50:49,239 INFO L226 Difference]: Without dead ends: 183
[2022-01-31 19:50:49,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1256 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=311, Invalid=5541, Unknown=0, NotChecked=0, Total=5852
[2022-01-31 19:50:49,240 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 77 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2883 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 2980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:49,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 172 Invalid, 2980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2883 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-01-31 19:50:49,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states.
[2022-01-31 19:50:49,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 138.
[2022-01-31 19:50:49,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 112 states have (on average 1.0446428571428572) internal successors, (117), 113 states have internal predecessors, (117), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12)
[2022-01-31 19:50:49,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 142 transitions.
[2022-01-31 19:50:49,321 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 142 transitions. Word has length 125
[2022-01-31 19:50:49,322 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:49,322 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 142 transitions.
[2022-01-31 19:50:49,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.975) internal successors, (79), 39 states have internal predecessors, (79), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2022-01-31 19:50:49,322 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 142 transitions.
[2022-01-31 19:50:49,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128
[2022-01-31 19:50:49,323 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:49,323 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:49,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50
[2022-01-31 19:50:49,323 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:49,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:49,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1817578898, now seen corresponding path program 34 times
[2022-01-31 19:50:49,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:49,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239028866]
[2022-01-31 19:50:49,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:49,325 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:49,325 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:49,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:49,326 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:49,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:49,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2022-01-31 19:50:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:49,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2022-01-31 19:50:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:49,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2022-01-31 19:50:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:49,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67
[2022-01-31 19:50:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:49,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75
[2022-01-31 19:50:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:49,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2022-01-31 19:50:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:49,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2022-01-31 19:50:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:49,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2022-01-31 19:50:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:49,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107
[2022-01-31 19:50:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:49,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115
[2022-01-31 19:50:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:49,591 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 19:50:49,592 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:49,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239028866]
[2022-01-31 19:50:49,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [239028866] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:49,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:49,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26
[2022-01-31 19:50:49,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034405246]
[2022-01-31 19:50:49,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:49,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-01-31 19:50:49,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:49,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-01-31 19:50:49,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650
[2022-01-31 19:50:49,594 INFO L87 Difference]: Start difference. First operand 138 states and 142 transitions. Second operand has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 25 states have internal predecessors, (76), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2022-01-31 19:50:50,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:50,210 INFO L93 Difference]: Finished difference Result 190 states and 204 transitions.
[2022-01-31 19:50:50,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2022-01-31 19:50:50,211 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 25 states have internal predecessors, (76), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 127
[2022-01-31 19:50:50,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:50,211 INFO L225 Difference]: With dead ends: 190
[2022-01-31 19:50:50,211 INFO L226 Difference]: Without dead ends: 138
[2022-01-31 19:50:50,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=497, Invalid=1855, Unknown=0, NotChecked=0, Total=2352
[2022-01-31 19:50:50,212 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 61 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:50,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 74 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 19:50:50,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states.
[2022-01-31 19:50:50,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138.
[2022-01-31 19:50:50,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 112 states have (on average 1.0357142857142858) internal successors, (116), 113 states have internal predecessors, (116), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12)
[2022-01-31 19:50:50,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 141 transitions.
[2022-01-31 19:50:50,275 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 141 transitions. Word has length 127
[2022-01-31 19:50:50,275 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:50,275 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 141 transitions.
[2022-01-31 19:50:50,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 25 states have internal predecessors, (76), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2022-01-31 19:50:50,276 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 141 transitions.
[2022-01-31 19:50:50,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131
[2022-01-31 19:50:50,276 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:50,276 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:50,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51
[2022-01-31 19:50:50,277 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:50,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:50,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1587701934, now seen corresponding path program 35 times
[2022-01-31 19:50:50,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:50,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289556612]
[2022-01-31 19:50:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:50,278 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:50,278 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:50,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:50,279 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:51,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:51,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46
[2022-01-31 19:50:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:51,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2022-01-31 19:50:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:51,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62
[2022-01-31 19:50:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:51,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2022-01-31 19:50:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:51,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78
[2022-01-31 19:50:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:51,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2022-01-31 19:50:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:51,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94
[2022-01-31 19:50:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:51,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102
[2022-01-31 19:50:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:51,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110
[2022-01-31 19:50:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:51,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118
[2022-01-31 19:50:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:51,076 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 19:50:51,076 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:51,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289556612]
[2022-01-31 19:50:51,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1289556612] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:51,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:51,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42
[2022-01-31 19:50:51,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746186362]
[2022-01-31 19:50:51,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:51,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states
[2022-01-31 19:50:51,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:51,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants.
[2022-01-31 19:50:51,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1628, Unknown=0, NotChecked=0, Total=1722
[2022-01-31 19:50:51,078 INFO L87 Difference]: Start difference. First operand 138 states and 141 transitions. Second operand has 42 states, 41 states have (on average 1.9268292682926829) internal successors, (79), 40 states have internal predecessors, (79), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2022-01-31 19:50:53,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:53,011 INFO L93 Difference]: Finished difference Result 193 states and 207 transitions.
[2022-01-31 19:50:53,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2022-01-31 19:50:53,011 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.9268292682926829) internal successors, (79), 40 states have internal predecessors, (79), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 130
[2022-01-31 19:50:53,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:53,012 INFO L225 Difference]: With dead ends: 193
[2022-01-31 19:50:53,012 INFO L226 Difference]: Without dead ends: 191
[2022-01-31 19:50:53,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1447 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=304, Invalid=6176, Unknown=0, NotChecked=0, Total=6480
[2022-01-31 19:50:53,013 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 77 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 3120 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 3211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:53,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 170 Invalid, 3211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3120 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2022-01-31 19:50:53,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states.
[2022-01-31 19:50:53,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 185.
[2022-01-31 19:50:53,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 147 states have (on average 1.0272108843537415) internal successors, (151), 149 states have internal predecessors, (151), 24 states have call successors, (24), 14 states have call predecessors, (24), 13 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23)
[2022-01-31 19:50:53,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 198 transitions.
[2022-01-31 19:50:53,129 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 198 transitions. Word has length 130
[2022-01-31 19:50:53,129 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:53,129 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 198 transitions.
[2022-01-31 19:50:53,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.9268292682926829) internal successors, (79), 40 states have internal predecessors, (79), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2022-01-31 19:50:53,130 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 198 transitions.
[2022-01-31 19:50:53,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134
[2022-01-31 19:50:53,130 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:53,131 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:53,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52
[2022-01-31 19:50:53,131 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:53,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:53,131 INFO L85 PathProgramCache]: Analyzing trace with hash -499062766, now seen corresponding path program 36 times
[2022-01-31 19:50:53,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:53,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325333814]
[2022-01-31 19:50:53,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:53,133 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:53,133 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:53,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:53,134 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:53,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:53,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2022-01-31 19:50:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:53,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2022-01-31 19:50:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:53,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2022-01-31 19:50:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:53,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73
[2022-01-31 19:50:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:53,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81
[2022-01-31 19:50:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:53,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2022-01-31 19:50:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:53,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97
[2022-01-31 19:50:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:53,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2022-01-31 19:50:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:53,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113
[2022-01-31 19:50:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:53,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2022-01-31 19:50:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:53,981 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 19:50:53,981 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:53,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325333814]
[2022-01-31 19:50:53,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [325333814] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:53,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:53,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43
[2022-01-31 19:50:53,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921772987]
[2022-01-31 19:50:53,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:53,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states
[2022-01-31 19:50:53,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:53,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants.
[2022-01-31 19:50:53,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1709, Unknown=0, NotChecked=0, Total=1806
[2022-01-31 19:50:53,983 INFO L87 Difference]: Start difference. First operand 185 states and 198 transitions. Second operand has 43 states, 42 states have (on average 1.9523809523809523) internal successors, (82), 41 states have internal predecessors, (82), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2022-01-31 19:50:56,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:56,610 INFO L93 Difference]: Finished difference Result 247 states and 273 transitions.
[2022-01-31 19:50:56,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2022-01-31 19:50:56,611 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.9523809523809523) internal successors, (82), 41 states have internal predecessors, (82), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 133
[2022-01-31 19:50:56,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:56,612 INFO L225 Difference]: With dead ends: 247
[2022-01-31 19:50:56,612 INFO L226 Difference]: Without dead ends: 245
[2022-01-31 19:50:56,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2162 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=424, Invalid=8506, Unknown=0, NotChecked=0, Total=8930
[2022-01-31 19:50:56,613 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 137 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 3843 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 3999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 3843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:56,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 181 Invalid, 3999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 3843 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time]
[2022-01-31 19:50:56,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states.
[2022-01-31 19:50:56,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 186.
[2022-01-31 19:50:56,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 148 states have (on average 1.0337837837837838) internal successors, (153), 150 states have internal predecessors, (153), 24 states have call successors, (24), 14 states have call predecessors, (24), 13 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23)
[2022-01-31 19:50:56,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 200 transitions.
[2022-01-31 19:50:56,713 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 200 transitions. Word has length 133
[2022-01-31 19:50:56,713 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:56,713 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 200 transitions.
[2022-01-31 19:50:56,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.9523809523809523) internal successors, (82), 41 states have internal predecessors, (82), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2022-01-31 19:50:56,713 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 200 transitions.
[2022-01-31 19:50:56,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2022-01-31 19:50:56,714 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:56,714 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:56,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53
[2022-01-31 19:50:56,714 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:56,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:56,715 INFO L85 PathProgramCache]: Analyzing trace with hash 525165099, now seen corresponding path program 10 times
[2022-01-31 19:50:56,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:56,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695218895]
[2022-01-31 19:50:56,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:56,716 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:56,716 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:56,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:56,718 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:56,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:56,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2022-01-31 19:50:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:56,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2022-01-31 19:50:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:56,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67
[2022-01-31 19:50:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:56,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75
[2022-01-31 19:50:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:56,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2022-01-31 19:50:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:56,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2022-01-31 19:50:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:56,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2022-01-31 19:50:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:56,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107
[2022-01-31 19:50:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:56,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115
[2022-01-31 19:50:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:56,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123
[2022-01-31 19:50:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:56,898 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 19:50:56,898 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:56,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695218895]
[2022-01-31 19:50:56,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1695218895] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:56,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:56,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19
[2022-01-31 19:50:56,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105805033]
[2022-01-31 19:50:56,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:56,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2022-01-31 19:50:56,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:56,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2022-01-31 19:50:56,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342
[2022-01-31 19:50:56,900 INFO L87 Difference]: Start difference. First operand 186 states and 200 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:57,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:50:57,403 INFO L93 Difference]: Finished difference Result 373 states and 413 transitions.
[2022-01-31 19:50:57,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2022-01-31 19:50:57,403 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 135
[2022-01-31 19:50:57,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:50:57,405 INFO L225 Difference]: With dead ends: 373
[2022-01-31 19:50:57,405 INFO L226 Difference]: Without dead ends: 284
[2022-01-31 19:50:57,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=445, Invalid=745, Unknown=0, NotChecked=0, Total=1190
[2022-01-31 19:50:57,406 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 160 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:50:57,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 25 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:50:57,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states.
[2022-01-31 19:50:57,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 188.
[2022-01-31 19:50:57,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 150 states have (on average 1.0333333333333334) internal successors, (155), 152 states have internal predecessors, (155), 24 states have call successors, (24), 14 states have call predecessors, (24), 13 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23)
[2022-01-31 19:50:57,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 202 transitions.
[2022-01-31 19:50:57,556 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 202 transitions. Word has length 135
[2022-01-31 19:50:57,556 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:50:57,557 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 202 transitions.
[2022-01-31 19:50:57,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:50:57,557 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 202 transitions.
[2022-01-31 19:50:57,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137
[2022-01-31 19:50:57,558 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:50:57,558 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:50:57,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54
[2022-01-31 19:50:57,558 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:50:57,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:50:57,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1949598162, now seen corresponding path program 37 times
[2022-01-31 19:50:57,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:50:57,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179461893]
[2022-01-31 19:50:57,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:50:57,560 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:50:57,560 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:50:57,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:50:57,561 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:50:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:58,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:50:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:58,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2022-01-31 19:50:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:58,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60
[2022-01-31 19:50:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:58,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68
[2022-01-31 19:50:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:58,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76
[2022-01-31 19:50:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:58,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84
[2022-01-31 19:50:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:58,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2022-01-31 19:50:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:58,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2022-01-31 19:50:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:58,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108
[2022-01-31 19:50:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:58,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2022-01-31 19:50:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:58,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2022-01-31 19:50:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:50:58,499 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 19:50:58,500 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:50:58,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179461893]
[2022-01-31 19:50:58,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1179461893] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:50:58,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:50:58,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44
[2022-01-31 19:50:58,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070315441]
[2022-01-31 19:50:58,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:50:58,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states
[2022-01-31 19:50:58,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:50:58,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants.
[2022-01-31 19:50:58,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1791, Unknown=0, NotChecked=0, Total=1892
[2022-01-31 19:50:58,501 INFO L87 Difference]: Start difference. First operand 188 states and 202 transitions. Second operand has 44 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 42 states have internal predecessors, (85), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2022-01-31 19:51:00,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:51:00,575 INFO L93 Difference]: Finished difference Result 200 states and 214 transitions.
[2022-01-31 19:51:00,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2022-01-31 19:51:00,576 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 42 states have internal predecessors, (85), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 136
[2022-01-31 19:51:00,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:51:00,576 INFO L225 Difference]: With dead ends: 200
[2022-01-31 19:51:00,577 INFO L226 Difference]: Without dead ends: 198
[2022-01-31 19:51:00,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=336, Invalid=6470, Unknown=0, NotChecked=0, Total=6806
[2022-01-31 19:51:00,578 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 82 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 3594 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 3699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2022-01-31 19:51:00,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 197 Invalid, 3699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3594 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2022-01-31 19:51:00,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states.
[2022-01-31 19:51:00,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 149.
[2022-01-31 19:51:00,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 121 states have (on average 1.0413223140495869) internal successors, (126), 122 states have internal predecessors, (126), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13)
[2022-01-31 19:51:00,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 153 transitions.
[2022-01-31 19:51:00,654 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 153 transitions. Word has length 136
[2022-01-31 19:51:00,654 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:51:00,655 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 153 transitions.
[2022-01-31 19:51:00,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 42 states have internal predecessors, (85), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2022-01-31 19:51:00,655 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 153 transitions.
[2022-01-31 19:51:00,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139
[2022-01-31 19:51:00,655 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:51:00,655 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:51:00,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55
[2022-01-31 19:51:00,655 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:51:00,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:51:00,656 INFO L85 PathProgramCache]: Analyzing trace with hash 712965768, now seen corresponding path program 38 times
[2022-01-31 19:51:00,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:51:00,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814373221]
[2022-01-31 19:51:00,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:51:00,657 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:51:00,657 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:51:00,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:51:00,658 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:51:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:00,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:51:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:00,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46
[2022-01-31 19:51:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:00,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2022-01-31 19:51:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:00,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62
[2022-01-31 19:51:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:00,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2022-01-31 19:51:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:00,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78
[2022-01-31 19:51:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:00,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2022-01-31 19:51:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:00,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94
[2022-01-31 19:51:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:00,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102
[2022-01-31 19:51:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:00,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110
[2022-01-31 19:51:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:00,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118
[2022-01-31 19:51:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:00,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126
[2022-01-31 19:51:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:00,941 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 19:51:00,941 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:51:00,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814373221]
[2022-01-31 19:51:00,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [814373221] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:51:00,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:51:00,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28
[2022-01-31 19:51:00,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772208713]
[2022-01-31 19:51:00,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:51:00,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-01-31 19:51:00,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:51:00,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-01-31 19:51:00,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756
[2022-01-31 19:51:00,942 INFO L87 Difference]: Start difference. First operand 149 states and 153 transitions. Second operand has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 27 states have internal predecessors, (82), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2022-01-31 19:51:01,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:51:01,564 INFO L93 Difference]: Finished difference Result 205 states and 220 transitions.
[2022-01-31 19:51:01,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2022-01-31 19:51:01,564 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 27 states have internal predecessors, (82), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 138
[2022-01-31 19:51:01,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:51:01,565 INFO L225 Difference]: With dead ends: 205
[2022-01-31 19:51:01,565 INFO L226 Difference]: Without dead ends: 149
[2022-01-31 19:51:01,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=577, Invalid=2179, Unknown=0, NotChecked=0, Total=2756
[2022-01-31 19:51:01,565 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 64 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 19:51:01,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 81 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 19:51:01,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states.
[2022-01-31 19:51:01,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149.
[2022-01-31 19:51:01,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 121 states have (on average 1.0330578512396693) internal successors, (125), 122 states have internal predecessors, (125), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13)
[2022-01-31 19:51:01,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 152 transitions.
[2022-01-31 19:51:01,660 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 152 transitions. Word has length 138
[2022-01-31 19:51:01,660 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:51:01,660 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 152 transitions.
[2022-01-31 19:51:01,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 27 states have internal predecessors, (82), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2022-01-31 19:51:01,660 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 152 transitions.
[2022-01-31 19:51:01,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142
[2022-01-31 19:51:01,661 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:51:01,661 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:51:01,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56
[2022-01-31 19:51:01,661 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:51:01,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:51:01,661 INFO L85 PathProgramCache]: Analyzing trace with hash 233429484, now seen corresponding path program 39 times
[2022-01-31 19:51:01,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:51:01,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040174798]
[2022-01-31 19:51:01,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:51:01,663 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:51:01,663 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:51:01,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:51:01,664 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:51:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:02,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:51:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:02,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2022-01-31 19:51:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:02,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2022-01-31 19:51:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:02,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2022-01-31 19:51:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:02,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73
[2022-01-31 19:51:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:02,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81
[2022-01-31 19:51:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:02,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2022-01-31 19:51:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:02,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97
[2022-01-31 19:51:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:02,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2022-01-31 19:51:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:02,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113
[2022-01-31 19:51:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:02,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2022-01-31 19:51:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:02,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2022-01-31 19:51:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:02,792 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 19:51:02,792 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:51:02,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040174798]
[2022-01-31 19:51:02,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2040174798] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:51:02,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:51:02,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45
[2022-01-31 19:51:02,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478957091]
[2022-01-31 19:51:02,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:51:02,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states
[2022-01-31 19:51:02,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:51:02,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2022-01-31 19:51:02,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1868, Unknown=0, NotChecked=0, Total=1980
[2022-01-31 19:51:02,793 INFO L87 Difference]: Start difference. First operand 149 states and 152 transitions. Second operand has 45 states, 44 states have (on average 1.9318181818181819) internal successors, (85), 43 states have internal predecessors, (85), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2022-01-31 19:51:04,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:51:04,911 INFO L93 Difference]: Finished difference Result 208 states and 223 transitions.
[2022-01-31 19:51:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2022-01-31 19:51:04,911 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.9318181818181819) internal successors, (85), 43 states have internal predecessors, (85), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 141
[2022-01-31 19:51:04,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:51:04,912 INFO L225 Difference]: With dead ends: 208
[2022-01-31 19:51:04,912 INFO L226 Difference]: Without dead ends: 206
[2022-01-31 19:51:04,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2021 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=338, Invalid=7144, Unknown=0, NotChecked=0, Total=7482
[2022-01-31 19:51:04,913 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 81 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 3364 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 3462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 3364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2022-01-31 19:51:04,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 160 Invalid, 3462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 3364 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2022-01-31 19:51:04,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states.
[2022-01-31 19:51:05,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 200.
[2022-01-31 19:51:05,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 159 states have (on average 1.0251572327044025) internal successors, (163), 161 states have internal predecessors, (163), 26 states have call successors, (26), 15 states have call predecessors, (26), 14 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25)
[2022-01-31 19:51:05,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 214 transitions.
[2022-01-31 19:51:05,087 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 214 transitions. Word has length 141
[2022-01-31 19:51:05,088 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:51:05,088 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 214 transitions.
[2022-01-31 19:51:05,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.9318181818181819) internal successors, (85), 43 states have internal predecessors, (85), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2022-01-31 19:51:05,088 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 214 transitions.
[2022-01-31 19:51:05,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145
[2022-01-31 19:51:05,089 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:51:05,089 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:51:05,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57
[2022-01-31 19:51:05,089 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:51:05,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:51:05,089 INFO L85 PathProgramCache]: Analyzing trace with hash -570780664, now seen corresponding path program 40 times
[2022-01-31 19:51:05,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:51:05,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923648407]
[2022-01-31 19:51:05,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:51:05,091 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:51:05,091 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:51:05,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:51:05,092 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:51:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:06,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:51:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:06,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2022-01-31 19:51:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:06,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60
[2022-01-31 19:51:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:06,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68
[2022-01-31 19:51:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:06,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76
[2022-01-31 19:51:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:06,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84
[2022-01-31 19:51:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:06,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2022-01-31 19:51:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:06,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2022-01-31 19:51:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:06,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108
[2022-01-31 19:51:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:06,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2022-01-31 19:51:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:06,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2022-01-31 19:51:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:06,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132
[2022-01-31 19:51:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:06,209 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 19:51:06,209 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:51:06,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923648407]
[2022-01-31 19:51:06,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [923648407] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:51:06,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:51:06,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46
[2022-01-31 19:51:06,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275289432]
[2022-01-31 19:51:06,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:51:06,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states
[2022-01-31 19:51:06,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:51:06,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants.
[2022-01-31 19:51:06,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1956, Unknown=0, NotChecked=0, Total=2070
[2022-01-31 19:51:06,211 INFO L87 Difference]: Start difference. First operand 200 states and 214 transitions. Second operand has 46 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 44 states have internal predecessors, (88), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2022-01-31 19:51:09,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:51:09,036 INFO L93 Difference]: Finished difference Result 266 states and 294 transitions.
[2022-01-31 19:51:09,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states.
[2022-01-31 19:51:09,036 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 44 states have internal predecessors, (88), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 144
[2022-01-31 19:51:09,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:51:09,037 INFO L225 Difference]: With dead ends: 266
[2022-01-31 19:51:09,037 INFO L226 Difference]: Without dead ends: 264
[2022-01-31 19:51:09,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2834 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=466, Invalid=9836, Unknown=0, NotChecked=0, Total=10302
[2022-01-31 19:51:09,038 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 117 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 4142 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 4285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 4142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time
[2022-01-31 19:51:09,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 182 Invalid, 4285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 4142 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time]
[2022-01-31 19:51:09,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states.
[2022-01-31 19:51:09,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 201.
[2022-01-31 19:51:09,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 160 states have (on average 1.03125) internal successors, (165), 162 states have internal predecessors, (165), 26 states have call successors, (26), 15 states have call predecessors, (26), 14 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25)
[2022-01-31 19:51:09,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 216 transitions.
[2022-01-31 19:51:09,154 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 216 transitions. Word has length 144
[2022-01-31 19:51:09,154 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:51:09,154 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 216 transitions.
[2022-01-31 19:51:09,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 44 states have internal predecessors, (88), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2022-01-31 19:51:09,154 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 216 transitions.
[2022-01-31 19:51:09,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2022-01-31 19:51:09,155 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:51:09,155 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:51:09,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58
[2022-01-31 19:51:09,156 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:51:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:51:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1521103327, now seen corresponding path program 11 times
[2022-01-31 19:51:09,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:51:09,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277423764]
[2022-01-31 19:51:09,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:51:09,157 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:51:09,157 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:51:09,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:51:09,159 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:51:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:09,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:51:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:09,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2022-01-31 19:51:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:09,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62
[2022-01-31 19:51:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:09,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2022-01-31 19:51:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:09,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78
[2022-01-31 19:51:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:09,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2022-01-31 19:51:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:09,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94
[2022-01-31 19:51:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:09,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102
[2022-01-31 19:51:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:09,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110
[2022-01-31 19:51:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:09,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118
[2022-01-31 19:51:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:09,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126
[2022-01-31 19:51:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:09,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2022-01-31 19:51:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:09,376 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 19:51:09,376 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:51:09,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277423764]
[2022-01-31 19:51:09,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1277423764] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:51:09,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:51:09,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20
[2022-01-31 19:51:09,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272672708]
[2022-01-31 19:51:09,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:51:09,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2022-01-31 19:51:09,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:51:09,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2022-01-31 19:51:09,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=222, Unknown=0, NotChecked=0, Total=380
[2022-01-31 19:51:09,377 INFO L87 Difference]: Start difference. First operand 201 states and 216 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:51:09,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:51:09,961 INFO L93 Difference]: Finished difference Result 404 states and 447 transitions.
[2022-01-31 19:51:09,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2022-01-31 19:51:09,962 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 146
[2022-01-31 19:51:09,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:51:09,963 INFO L225 Difference]: With dead ends: 404
[2022-01-31 19:51:09,963 INFO L226 Difference]: Without dead ends: 307
[2022-01-31 19:51:09,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=498, Invalid=834, Unknown=0, NotChecked=0, Total=1332
[2022-01-31 19:51:09,964 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 168 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:51:09,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 25 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:51:09,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states.
[2022-01-31 19:51:10,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 203.
[2022-01-31 19:51:10,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 162 states have (on average 1.0308641975308641) internal successors, (167), 164 states have internal predecessors, (167), 26 states have call successors, (26), 15 states have call predecessors, (26), 14 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25)
[2022-01-31 19:51:10,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 218 transitions.
[2022-01-31 19:51:10,108 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 218 transitions. Word has length 146
[2022-01-31 19:51:10,108 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:51:10,108 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 218 transitions.
[2022-01-31 19:51:10,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:51:10,108 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 218 transitions.
[2022-01-31 19:51:10,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148
[2022-01-31 19:51:10,109 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:51:10,109 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:51:10,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59
[2022-01-31 19:51:10,109 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:51:10,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:51:10,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1467722644, now seen corresponding path program 41 times
[2022-01-31 19:51:10,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:51:10,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413438336]
[2022-01-31 19:51:10,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:51:10,110 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:51:10,110 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:51:10,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:51:10,112 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:51:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:11,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:51:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:11,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2022-01-31 19:51:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:11,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63
[2022-01-31 19:51:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:11,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71
[2022-01-31 19:51:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:11,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2022-01-31 19:51:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:11,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2022-01-31 19:51:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:11,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95
[2022-01-31 19:51:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:11,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103
[2022-01-31 19:51:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:11,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2022-01-31 19:51:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:11,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119
[2022-01-31 19:51:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:11,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127
[2022-01-31 19:51:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:11,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2022-01-31 19:51:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:11,262 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 19:51:11,262 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:51:11,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413438336]
[2022-01-31 19:51:11,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1413438336] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:51:11,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:51:11,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47
[2022-01-31 19:51:11,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880812412]
[2022-01-31 19:51:11,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:51:11,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states
[2022-01-31 19:51:11,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:51:11,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants.
[2022-01-31 19:51:11,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=2044, Unknown=0, NotChecked=0, Total=2162
[2022-01-31 19:51:11,263 INFO L87 Difference]: Start difference. First operand 203 states and 218 transitions. Second operand has 47 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 45 states have internal predecessors, (91), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2022-01-31 19:51:13,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:51:13,413 INFO L93 Difference]: Finished difference Result 215 states and 230 transitions.
[2022-01-31 19:51:13,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2022-01-31 19:51:13,414 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 45 states have internal predecessors, (91), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 147
[2022-01-31 19:51:13,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:51:13,415 INFO L225 Difference]: With dead ends: 215
[2022-01-31 19:51:13,415 INFO L226 Difference]: Without dead ends: 213
[2022-01-31 19:51:13,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2041 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=371, Invalid=7461, Unknown=0, NotChecked=0, Total=7832
[2022-01-31 19:51:13,416 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 116 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 3439 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 3577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 3439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2022-01-31 19:51:13,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 161 Invalid, 3577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 3439 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2022-01-31 19:51:13,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states.
[2022-01-31 19:51:13,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 160.
[2022-01-31 19:51:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 130 states have (on average 1.0384615384615385) internal successors, (135), 131 states have internal predecessors, (135), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14)
[2022-01-31 19:51:13,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 164 transitions.
[2022-01-31 19:51:13,506 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 164 transitions. Word has length 147
[2022-01-31 19:51:13,506 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:51:13,506 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 164 transitions.
[2022-01-31 19:51:13,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 45 states have internal predecessors, (91), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2022-01-31 19:51:13,506 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 164 transitions.
[2022-01-31 19:51:13,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150
[2022-01-31 19:51:13,507 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:51:13,507 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:51:13,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60
[2022-01-31 19:51:13,507 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:51:13,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:51:13,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1067953722, now seen corresponding path program 42 times
[2022-01-31 19:51:13,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:51:13,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730111282]
[2022-01-31 19:51:13,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:51:13,509 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:51:13,509 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:51:13,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:51:13,511 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:51:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:13,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:51:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:13,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2022-01-31 19:51:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:13,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2022-01-31 19:51:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:13,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2022-01-31 19:51:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:13,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73
[2022-01-31 19:51:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:13,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81
[2022-01-31 19:51:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:13,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2022-01-31 19:51:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:13,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97
[2022-01-31 19:51:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:13,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2022-01-31 19:51:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:13,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113
[2022-01-31 19:51:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:13,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2022-01-31 19:51:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:13,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2022-01-31 19:51:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:13,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137
[2022-01-31 19:51:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 19:51:13,814 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:51:13,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730111282]
[2022-01-31 19:51:13,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [730111282] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:51:13,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:51:13,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30
[2022-01-31 19:51:13,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078386824]
[2022-01-31 19:51:13,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:51:13,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states
[2022-01-31 19:51:13,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:51:13,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2022-01-31 19:51:13,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=655, Unknown=0, NotChecked=0, Total=870
[2022-01-31 19:51:13,816 INFO L87 Difference]: Start difference. First operand 160 states and 164 transitions. Second operand has 30 states, 30 states have (on average 2.933333333333333) internal successors, (88), 29 states have internal predecessors, (88), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2022-01-31 19:51:14,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:51:14,536 INFO L93 Difference]: Finished difference Result 220 states and 236 transitions.
[2022-01-31 19:51:14,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2022-01-31 19:51:14,536 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.933333333333333) internal successors, (88), 29 states have internal predecessors, (88), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 149
[2022-01-31 19:51:14,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:51:14,537 INFO L225 Difference]: With dead ends: 220
[2022-01-31 19:51:14,537 INFO L226 Difference]: Without dead ends: 160
[2022-01-31 19:51:14,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=663, Invalid=2529, Unknown=0, NotChecked=0, Total=3192
[2022-01-31 19:51:14,538 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 67 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 19:51:14,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 73 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 19:51:14,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states.
[2022-01-31 19:51:14,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160.
[2022-01-31 19:51:14,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 130 states have (on average 1.0307692307692307) internal successors, (134), 131 states have internal predecessors, (134), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14)
[2022-01-31 19:51:14,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 163 transitions.
[2022-01-31 19:51:14,621 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 163 transitions. Word has length 149
[2022-01-31 19:51:14,621 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:51:14,621 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 163 transitions.
[2022-01-31 19:51:14,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.933333333333333) internal successors, (88), 29 states have internal predecessors, (88), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2022-01-31 19:51:14,622 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 163 transitions.
[2022-01-31 19:51:14,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153
[2022-01-31 19:51:14,622 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:51:14,622 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:51:14,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61
[2022-01-31 19:51:14,623 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:51:14,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:51:14,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1888169954, now seen corresponding path program 43 times
[2022-01-31 19:51:14,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:51:14,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049221014]
[2022-01-31 19:51:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:51:14,625 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:51:14,625 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:51:14,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:51:14,626 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:51:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:15,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:51:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:15,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2022-01-31 19:51:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:15,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60
[2022-01-31 19:51:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:15,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68
[2022-01-31 19:51:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:15,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76
[2022-01-31 19:51:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:15,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84
[2022-01-31 19:51:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:15,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2022-01-31 19:51:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:15,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2022-01-31 19:51:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:15,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108
[2022-01-31 19:51:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:15,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2022-01-31 19:51:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:15,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2022-01-31 19:51:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:15,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132
[2022-01-31 19:51:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:15,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2022-01-31 19:51:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:15,601 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 19:51:15,601 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:51:15,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049221014]
[2022-01-31 19:51:15,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1049221014] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:51:15,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:51:15,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48
[2022-01-31 19:51:15,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029000134]
[2022-01-31 19:51:15,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:51:15,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states
[2022-01-31 19:51:15,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:51:15,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants.
[2022-01-31 19:51:15,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2148, Unknown=0, NotChecked=0, Total=2256
[2022-01-31 19:51:15,603 INFO L87 Difference]: Start difference. First operand 160 states and 163 transitions. Second operand has 48 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2022-01-31 19:51:18,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:51:18,235 INFO L93 Difference]: Finished difference Result 223 states and 239 transitions.
[2022-01-31 19:51:18,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2022-01-31 19:51:18,235 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 152
[2022-01-31 19:51:18,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:51:18,236 INFO L225 Difference]: With dead ends: 223
[2022-01-31 19:51:18,236 INFO L226 Difference]: Without dead ends: 221
[2022-01-31 19:51:18,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1954 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=350, Invalid=8206, Unknown=0, NotChecked=0, Total=8556
[2022-01-31 19:51:18,237 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 85 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 4562 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 4667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 4562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2022-01-31 19:51:18,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 212 Invalid, 4667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 4562 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2022-01-31 19:51:18,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states.
[2022-01-31 19:51:18,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 215.
[2022-01-31 19:51:18,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 171 states have (on average 1.023391812865497) internal successors, (175), 173 states have internal predecessors, (175), 28 states have call successors, (28), 16 states have call predecessors, (28), 15 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27)
[2022-01-31 19:51:18,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 230 transitions.
[2022-01-31 19:51:18,380 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 230 transitions. Word has length 152
[2022-01-31 19:51:18,380 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:51:18,380 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 230 transitions.
[2022-01-31 19:51:18,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2022-01-31 19:51:18,380 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 230 transitions.
[2022-01-31 19:51:18,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156
[2022-01-31 19:51:18,381 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:51:18,381 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:51:18,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62
[2022-01-31 19:51:18,382 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:51:18,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:51:18,382 INFO L85 PathProgramCache]: Analyzing trace with hash -535802810, now seen corresponding path program 44 times
[2022-01-31 19:51:18,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:51:18,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825736720]
[2022-01-31 19:51:18,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:51:18,384 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:51:18,384 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:51:18,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:51:18,385 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:51:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:19,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:51:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:19,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2022-01-31 19:51:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:19,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63
[2022-01-31 19:51:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:19,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71
[2022-01-31 19:51:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:19,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2022-01-31 19:51:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:19,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2022-01-31 19:51:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:19,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95
[2022-01-31 19:51:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:19,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103
[2022-01-31 19:51:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:19,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2022-01-31 19:51:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:19,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119
[2022-01-31 19:51:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:19,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127
[2022-01-31 19:51:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:19,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2022-01-31 19:51:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:19,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143
[2022-01-31 19:51:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:19,414 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 19:51:19,414 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:51:19,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825736720]
[2022-01-31 19:51:19,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [825736720] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:51:19,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:51:19,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49
[2022-01-31 19:51:19,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019141462]
[2022-01-31 19:51:19,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:51:19,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states
[2022-01-31 19:51:19,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:51:19,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants.
[2022-01-31 19:51:19,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=2241, Unknown=0, NotChecked=0, Total=2352
[2022-01-31 19:51:19,416 INFO L87 Difference]: Start difference. First operand 215 states and 230 transitions. Second operand has 49 states, 48 states have (on average 1.9583333333333333) internal successors, (94), 47 states have internal predecessors, (94), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2022-01-31 19:51:22,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:51:22,724 INFO L93 Difference]: Finished difference Result 285 states and 315 transitions.
[2022-01-31 19:51:22,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states.
[2022-01-31 19:51:22,724 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.9583333333333333) internal successors, (94), 47 states have internal predecessors, (94), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 155
[2022-01-31 19:51:22,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:51:22,725 INFO L225 Difference]: With dead ends: 285
[2022-01-31 19:51:22,725 INFO L226 Difference]: Without dead ends: 283
[2022-01-31 19:51:22,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2914 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=488, Invalid=11284, Unknown=0, NotChecked=0, Total=11772
[2022-01-31 19:51:22,726 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 152 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 5107 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 5286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 5107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time
[2022-01-31 19:51:22,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 211 Invalid, 5286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 5107 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time]
[2022-01-31 19:51:22,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states.
[2022-01-31 19:51:22,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 216.
[2022-01-31 19:51:22,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 172 states have (on average 1.0290697674418605) internal successors, (177), 174 states have internal predecessors, (177), 28 states have call successors, (28), 16 states have call predecessors, (28), 15 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27)
[2022-01-31 19:51:22,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 232 transitions.
[2022-01-31 19:51:22,874 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 232 transitions. Word has length 155
[2022-01-31 19:51:22,875 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:51:22,875 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 232 transitions.
[2022-01-31 19:51:22,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.9583333333333333) internal successors, (94), 47 states have internal predecessors, (94), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2022-01-31 19:51:22,875 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 232 transitions.
[2022-01-31 19:51:22,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158
[2022-01-31 19:51:22,876 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:51:22,876 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:51:22,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63
[2022-01-31 19:51:22,876 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:51:22,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:51:22,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1265292383, now seen corresponding path program 12 times
[2022-01-31 19:51:22,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:51:22,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31127553]
[2022-01-31 19:51:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:51:22,879 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:51:22,879 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:51:22,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:51:22,880 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:51:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:23,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:51:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:23,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2022-01-31 19:51:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:23,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2022-01-31 19:51:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:23,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73
[2022-01-31 19:51:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:23,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81
[2022-01-31 19:51:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:23,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2022-01-31 19:51:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:23,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97
[2022-01-31 19:51:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:23,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2022-01-31 19:51:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:23,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113
[2022-01-31 19:51:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:23,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2022-01-31 19:51:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:23,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2022-01-31 19:51:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:23,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137
[2022-01-31 19:51:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:23,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145
[2022-01-31 19:51:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:23,111 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 19:51:23,111 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:51:23,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31127553]
[2022-01-31 19:51:23,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [31127553] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:51:23,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:51:23,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21
[2022-01-31 19:51:23,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159795790]
[2022-01-31 19:51:23,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:51:23,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2022-01-31 19:51:23,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:51:23,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2022-01-31 19:51:23,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=244, Unknown=0, NotChecked=0, Total=420
[2022-01-31 19:51:23,114 INFO L87 Difference]: Start difference. First operand 216 states and 232 transitions. Second operand has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:51:23,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:51:23,757 INFO L93 Difference]: Finished difference Result 435 states and 481 transitions.
[2022-01-31 19:51:23,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2022-01-31 19:51:23,758 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 157
[2022-01-31 19:51:23,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:51:23,759 INFO L225 Difference]: With dead ends: 435
[2022-01-31 19:51:23,759 INFO L226 Difference]: Without dead ends: 330
[2022-01-31 19:51:23,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=554, Invalid=928, Unknown=0, NotChecked=0, Total=1482
[2022-01-31 19:51:23,760 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 173 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:51:23,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 33 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:51:23,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states.
[2022-01-31 19:51:23,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 218.
[2022-01-31 19:51:23,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 174 states have (on average 1.028735632183908) internal successors, (179), 176 states have internal predecessors, (179), 28 states have call successors, (28), 16 states have call predecessors, (28), 15 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27)
[2022-01-31 19:51:23,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 234 transitions.
[2022-01-31 19:51:23,972 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 234 transitions. Word has length 157
[2022-01-31 19:51:23,972 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:51:23,972 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 234 transitions.
[2022-01-31 19:51:23,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:51:23,972 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 234 transitions.
[2022-01-31 19:51:23,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159
[2022-01-31 19:51:23,973 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:51:23,973 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:51:23,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64
[2022-01-31 19:51:23,974 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:51:23,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:51:23,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1823267486, now seen corresponding path program 45 times
[2022-01-31 19:51:23,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:51:23,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101060406]
[2022-01-31 19:51:23,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:51:23,978 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:51:23,978 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:51:23,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:51:23,979 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:51:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:24,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:51:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:24,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58
[2022-01-31 19:51:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:24,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66
[2022-01-31 19:51:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:24,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74
[2022-01-31 19:51:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:24,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82
[2022-01-31 19:51:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:24,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90
[2022-01-31 19:51:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:24,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98
[2022-01-31 19:51:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:24,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106
[2022-01-31 19:51:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:24,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114
[2022-01-31 19:51:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:24,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122
[2022-01-31 19:51:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:24,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2022-01-31 19:51:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:24,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138
[2022-01-31 19:51:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:25,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146
[2022-01-31 19:51:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:25,001 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 19:51:25,002 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:51:25,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101060406]
[2022-01-31 19:51:25,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1101060406] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:51:25,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:51:25,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50
[2022-01-31 19:51:25,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170794535]
[2022-01-31 19:51:25,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:51:25,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states
[2022-01-31 19:51:25,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:51:25,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants.
[2022-01-31 19:51:25,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=2335, Unknown=0, NotChecked=0, Total=2450
[2022-01-31 19:51:25,003 INFO L87 Difference]: Start difference. First operand 218 states and 234 transitions. Second operand has 50 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2022-01-31 19:51:27,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:51:27,747 INFO L93 Difference]: Finished difference Result 230 states and 246 transitions.
[2022-01-31 19:51:27,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2022-01-31 19:51:27,748 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 158
[2022-01-31 19:51:27,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:51:27,748 INFO L225 Difference]: With dead ends: 230
[2022-01-31 19:51:27,748 INFO L226 Difference]: Without dead ends: 228
[2022-01-31 19:51:27,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1997 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=386, Invalid=8544, Unknown=0, NotChecked=0, Total=8930
[2022-01-31 19:51:27,749 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 123 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 4734 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 4882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 4734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2022-01-31 19:51:27,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 218 Invalid, 4882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 4734 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2022-01-31 19:51:27,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states.
[2022-01-31 19:51:27,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 171.
[2022-01-31 19:51:27,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 139 states have (on average 1.0359712230215827) internal successors, (144), 140 states have internal predecessors, (144), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15)
[2022-01-31 19:51:27,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 175 transitions.
[2022-01-31 19:51:27,852 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 175 transitions. Word has length 158
[2022-01-31 19:51:27,853 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:51:27,853 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 175 transitions.
[2022-01-31 19:51:27,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2022-01-31 19:51:27,853 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 175 transitions.
[2022-01-31 19:51:27,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161
[2022-01-31 19:51:27,853 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:51:27,853 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:51:27,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65
[2022-01-31 19:51:27,853 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:51:27,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:51:27,854 INFO L85 PathProgramCache]: Analyzing trace with hash 613896636, now seen corresponding path program 46 times
[2022-01-31 19:51:27,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:51:27,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847568271]
[2022-01-31 19:51:27,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:51:27,855 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:51:27,855 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:51:27,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:51:27,857 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:51:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:28,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:51:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:28,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2022-01-31 19:51:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:28,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60
[2022-01-31 19:51:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:28,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68
[2022-01-31 19:51:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:28,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76
[2022-01-31 19:51:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:28,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84
[2022-01-31 19:51:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:28,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2022-01-31 19:51:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:28,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2022-01-31 19:51:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:28,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108
[2022-01-31 19:51:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:28,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2022-01-31 19:51:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:28,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2022-01-31 19:51:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:28,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132
[2022-01-31 19:51:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:28,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2022-01-31 19:51:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:28,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148
[2022-01-31 19:51:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:28,212 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 19:51:28,212 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:51:28,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847568271]
[2022-01-31 19:51:28,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [847568271] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:51:28,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:51:28,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32
[2022-01-31 19:51:28,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482467670]
[2022-01-31 19:51:28,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:51:28,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2022-01-31 19:51:28,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:51:28,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2022-01-31 19:51:28,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992
[2022-01-31 19:51:28,214 INFO L87 Difference]: Start difference. First operand 171 states and 175 transitions. Second operand has 32 states, 32 states have (on average 2.9375) internal successors, (94), 31 states have internal predecessors, (94), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14)
[2022-01-31 19:51:28,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:51:28,987 INFO L93 Difference]: Finished difference Result 235 states and 252 transitions.
[2022-01-31 19:51:28,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2022-01-31 19:51:28,987 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.9375) internal successors, (94), 31 states have internal predecessors, (94), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 160
[2022-01-31 19:51:28,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:51:28,988 INFO L225 Difference]: With dead ends: 235
[2022-01-31 19:51:28,988 INFO L226 Difference]: Without dead ends: 171
[2022-01-31 19:51:28,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=755, Invalid=2905, Unknown=0, NotChecked=0, Total=3660
[2022-01-31 19:51:28,989 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 70 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 19:51:28,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 75 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 19:51:28,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states.
[2022-01-31 19:51:29,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171.
[2022-01-31 19:51:29,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 139 states have (on average 1.0287769784172662) internal successors, (143), 140 states have internal predecessors, (143), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15)
[2022-01-31 19:51:29,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 174 transitions.
[2022-01-31 19:51:29,078 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 174 transitions. Word has length 160
[2022-01-31 19:51:29,078 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:51:29,078 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 174 transitions.
[2022-01-31 19:51:29,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.9375) internal successors, (94), 31 states have internal predecessors, (94), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14)
[2022-01-31 19:51:29,079 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 174 transitions.
[2022-01-31 19:51:29,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164
[2022-01-31 19:51:29,079 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:51:29,079 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:51:29,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66
[2022-01-31 19:51:29,080 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:51:29,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:51:29,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1510225376, now seen corresponding path program 47 times
[2022-01-31 19:51:29,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:51:29,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664465038]
[2022-01-31 19:51:29,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:51:29,082 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:51:29,082 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:51:29,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:51:29,083 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:51:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:30,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:51:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:30,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2022-01-31 19:51:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:30,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63
[2022-01-31 19:51:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:30,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71
[2022-01-31 19:51:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:30,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2022-01-31 19:51:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:30,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2022-01-31 19:51:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:30,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95
[2022-01-31 19:51:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:30,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103
[2022-01-31 19:51:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:30,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2022-01-31 19:51:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:30,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119
[2022-01-31 19:51:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:30,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127
[2022-01-31 19:51:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:30,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2022-01-31 19:51:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:30,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143
[2022-01-31 19:51:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:30,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151
[2022-01-31 19:51:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:30,228 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 19:51:30,229 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:51:30,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664465038]
[2022-01-31 19:51:30,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1664465038] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:51:30,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:51:30,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51
[2022-01-31 19:51:30,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688666498]
[2022-01-31 19:51:30,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:51:30,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states
[2022-01-31 19:51:30,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:51:30,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants.
[2022-01-31 19:51:30,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=2435, Unknown=0, NotChecked=0, Total=2550
[2022-01-31 19:51:30,230 INFO L87 Difference]: Start difference. First operand 171 states and 174 transitions. Second operand has 51 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14)
[2022-01-31 19:51:33,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:51:33,181 INFO L93 Difference]: Finished difference Result 238 states and 255 transitions.
[2022-01-31 19:51:33,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states.
[2022-01-31 19:51:33,182 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 163
[2022-01-31 19:51:33,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:51:33,183 INFO L225 Difference]: With dead ends: 238
[2022-01-31 19:51:33,183 INFO L226 Difference]: Without dead ends: 236
[2022-01-31 19:51:33,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2236 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=373, Invalid=9329, Unknown=0, NotChecked=0, Total=9702
[2022-01-31 19:51:33,184 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 89 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 5122 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 5234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 5122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time
[2022-01-31 19:51:33,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 223 Invalid, 5234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 5122 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time]
[2022-01-31 19:51:33,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states.
[2022-01-31 19:51:33,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 230.
[2022-01-31 19:51:33,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 183 states have (on average 1.0218579234972678) internal successors, (187), 185 states have internal predecessors, (187), 30 states have call successors, (30), 17 states have call predecessors, (30), 16 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29)
[2022-01-31 19:51:33,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 246 transitions.
[2022-01-31 19:51:33,356 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 246 transitions. Word has length 163
[2022-01-31 19:51:33,356 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:51:33,357 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 246 transitions.
[2022-01-31 19:51:33,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14)
[2022-01-31 19:51:33,357 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 246 transitions.
[2022-01-31 19:51:33,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167
[2022-01-31 19:51:33,357 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:51:33,357 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:51:33,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67
[2022-01-31 19:51:33,358 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:51:33,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:51:33,358 INFO L85 PathProgramCache]: Analyzing trace with hash 819054396, now seen corresponding path program 48 times
[2022-01-31 19:51:33,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:51:33,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186109544]
[2022-01-31 19:51:33,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:51:33,359 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:51:33,359 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:51:33,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:51:33,360 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:51:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:34,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:51:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:34,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58
[2022-01-31 19:51:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:34,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66
[2022-01-31 19:51:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:34,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74
[2022-01-31 19:51:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:34,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82
[2022-01-31 19:51:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:34,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90
[2022-01-31 19:51:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:34,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98
[2022-01-31 19:51:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:34,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106
[2022-01-31 19:51:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:34,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114
[2022-01-31 19:51:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:34,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122
[2022-01-31 19:51:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:34,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2022-01-31 19:51:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:34,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138
[2022-01-31 19:51:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:34,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146
[2022-01-31 19:51:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:34,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154
[2022-01-31 19:51:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:34,460 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 19:51:34,460 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:51:34,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186109544]
[2022-01-31 19:51:34,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1186109544] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:51:34,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:51:34,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52
[2022-01-31 19:51:34,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809756120]
[2022-01-31 19:51:34,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:51:34,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states
[2022-01-31 19:51:34,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:51:34,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants.
[2022-01-31 19:51:34,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=2534, Unknown=0, NotChecked=0, Total=2652
[2022-01-31 19:51:34,462 INFO L87 Difference]: Start difference. First operand 230 states and 246 transitions. Second operand has 52 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 50 states have internal predecessors, (100), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14)
[2022-01-31 19:51:38,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:51:38,299 INFO L93 Difference]: Finished difference Result 304 states and 336 transitions.
[2022-01-31 19:51:38,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states.
[2022-01-31 19:51:38,299 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 50 states have internal predecessors, (100), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 166
[2022-01-31 19:51:38,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:51:38,301 INFO L225 Difference]: With dead ends: 304
[2022-01-31 19:51:38,301 INFO L226 Difference]: Without dead ends: 302
[2022-01-31 19:51:38,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3332 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=520, Invalid=12820, Unknown=0, NotChecked=0, Total=13340
[2022-01-31 19:51:38,302 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 161 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 6171 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 6363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 6171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time
[2022-01-31 19:51:38,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 234 Invalid, 6363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 6171 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time]
[2022-01-31 19:51:38,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states.
[2022-01-31 19:51:38,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 231.
[2022-01-31 19:51:38,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 184 states have (on average 1.0271739130434783) internal successors, (189), 186 states have internal predecessors, (189), 30 states have call successors, (30), 17 states have call predecessors, (30), 16 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29)
[2022-01-31 19:51:38,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 248 transitions.
[2022-01-31 19:51:38,507 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 248 transitions. Word has length 166
[2022-01-31 19:51:38,507 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:51:38,508 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 248 transitions.
[2022-01-31 19:51:38,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 50 states have internal predecessors, (100), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14)
[2022-01-31 19:51:38,508 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 248 transitions.
[2022-01-31 19:51:38,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169
[2022-01-31 19:51:38,509 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:51:38,509 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:51:38,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68
[2022-01-31 19:51:38,509 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:51:38,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:51:38,509 INFO L85 PathProgramCache]: Analyzing trace with hash 440946517, now seen corresponding path program 13 times
[2022-01-31 19:51:38,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:51:38,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846440599]
[2022-01-31 19:51:38,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:51:38,511 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:51:38,511 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:51:38,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:51:38,513 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:51:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:38,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:51:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:38,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60
[2022-01-31 19:51:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:38,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68
[2022-01-31 19:51:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:38,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76
[2022-01-31 19:51:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:38,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84
[2022-01-31 19:51:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:38,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2022-01-31 19:51:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:38,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2022-01-31 19:51:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:38,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108
[2022-01-31 19:51:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:38,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2022-01-31 19:51:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:38,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2022-01-31 19:51:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:38,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132
[2022-01-31 19:51:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:38,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2022-01-31 19:51:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:38,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148
[2022-01-31 19:51:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:38,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156
[2022-01-31 19:51:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:38,735 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 19:51:38,735 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:51:38,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846440599]
[2022-01-31 19:51:38,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1846440599] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:51:38,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:51:38,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22
[2022-01-31 19:51:38,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628004769]
[2022-01-31 19:51:38,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:51:38,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2022-01-31 19:51:38,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:51:38,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2022-01-31 19:51:38,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=267, Unknown=0, NotChecked=0, Total=462
[2022-01-31 19:51:38,736 INFO L87 Difference]: Start difference. First operand 231 states and 248 transitions. Second operand has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 21 states have internal predecessors, (65), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:51:39,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:51:39,414 INFO L93 Difference]: Finished difference Result 466 states and 515 transitions.
[2022-01-31 19:51:39,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2022-01-31 19:51:39,414 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 21 states have internal predecessors, (65), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 168
[2022-01-31 19:51:39,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:51:39,416 INFO L225 Difference]: With dead ends: 466
[2022-01-31 19:51:39,416 INFO L226 Difference]: Without dead ends: 353
[2022-01-31 19:51:39,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=613, Invalid=1027, Unknown=0, NotChecked=0, Total=1640
[2022-01-31 19:51:39,417 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 184 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:51:39,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 23 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:51:39,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states.
[2022-01-31 19:51:39,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 233.
[2022-01-31 19:51:39,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 186 states have (on average 1.0268817204301075) internal successors, (191), 188 states have internal predecessors, (191), 30 states have call successors, (30), 17 states have call predecessors, (30), 16 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29)
[2022-01-31 19:51:39,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 250 transitions.
[2022-01-31 19:51:39,606 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 250 transitions. Word has length 168
[2022-01-31 19:51:39,607 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:51:39,607 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 250 transitions.
[2022-01-31 19:51:39,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 21 states have internal predecessors, (65), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:51:39,607 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 250 transitions.
[2022-01-31 19:51:39,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170
[2022-01-31 19:51:39,608 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:51:39,608 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:51:39,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69
[2022-01-31 19:51:39,608 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:51:39,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:51:39,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1393859424, now seen corresponding path program 49 times
[2022-01-31 19:51:39,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:51:39,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765658676]
[2022-01-31 19:51:39,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:51:39,610 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:51:39,610 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:51:39,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:51:39,612 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:51:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:40,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:51:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:40,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61
[2022-01-31 19:51:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:40,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69
[2022-01-31 19:51:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:40,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77
[2022-01-31 19:51:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:40,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85
[2022-01-31 19:51:40,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:40,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93
[2022-01-31 19:51:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:40,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101
[2022-01-31 19:51:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:40,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109
[2022-01-31 19:51:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:40,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117
[2022-01-31 19:51:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:40,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125
[2022-01-31 19:51:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:40,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133
[2022-01-31 19:51:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:40,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2022-01-31 19:51:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:40,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149
[2022-01-31 19:51:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:40,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157
[2022-01-31 19:51:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:40,821 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 19:51:40,821 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:51:40,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765658676]
[2022-01-31 19:51:40,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1765658676] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:51:40,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:51:40,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53
[2022-01-31 19:51:40,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062799628]
[2022-01-31 19:51:40,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:51:40,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states
[2022-01-31 19:51:40,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:51:40,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants.
[2022-01-31 19:51:40,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=2634, Unknown=0, NotChecked=0, Total=2756
[2022-01-31 19:51:40,822 INFO L87 Difference]: Start difference. First operand 233 states and 250 transitions. Second operand has 53 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 51 states have internal predecessors, (103), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14)
[2022-01-31 19:51:43,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:51:43,879 INFO L93 Difference]: Finished difference Result 245 states and 262 transitions.
[2022-01-31 19:51:43,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states.
[2022-01-31 19:51:43,879 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 51 states have internal predecessors, (103), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 169
[2022-01-31 19:51:43,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:51:43,880 INFO L225 Difference]: With dead ends: 245
[2022-01-31 19:51:43,881 INFO L226 Difference]: Without dead ends: 243
[2022-01-31 19:51:43,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2282 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=411, Invalid=9689, Unknown=0, NotChecked=0, Total=10100
[2022-01-31 19:51:43,881 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 131 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 5439 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 5597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 5439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time
[2022-01-31 19:51:43,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 237 Invalid, 5597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 5439 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time]
[2022-01-31 19:51:43,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states.
[2022-01-31 19:51:43,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 182.
[2022-01-31 19:51:43,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 148 states have (on average 1.0337837837837838) internal successors, (153), 149 states have internal predecessors, (153), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16)
[2022-01-31 19:51:43,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 186 transitions.
[2022-01-31 19:51:43,988 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 186 transitions. Word has length 169
[2022-01-31 19:51:43,988 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:51:43,988 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 186 transitions.
[2022-01-31 19:51:43,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 51 states have internal predecessors, (103), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14)
[2022-01-31 19:51:43,989 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 186 transitions.
[2022-01-31 19:51:43,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172
[2022-01-31 19:51:43,989 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:51:43,989 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:51:43,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70
[2022-01-31 19:51:43,990 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:51:43,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:51:43,990 INFO L85 PathProgramCache]: Analyzing trace with hash -43987462, now seen corresponding path program 50 times
[2022-01-31 19:51:43,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:51:43,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861480435]
[2022-01-31 19:51:43,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:51:43,991 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:51:43,991 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:51:43,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:51:43,993 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:51:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:44,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:51:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:44,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2022-01-31 19:51:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:44,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63
[2022-01-31 19:51:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:44,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71
[2022-01-31 19:51:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:44,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2022-01-31 19:51:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:44,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2022-01-31 19:51:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:44,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95
[2022-01-31 19:51:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:44,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103
[2022-01-31 19:51:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:44,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2022-01-31 19:51:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:44,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119
[2022-01-31 19:51:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:44,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127
[2022-01-31 19:51:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:44,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2022-01-31 19:51:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:44,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143
[2022-01-31 19:51:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:44,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151
[2022-01-31 19:51:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:44,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2022-01-31 19:51:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:44,342 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 19:51:44,342 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:51:44,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861480435]
[2022-01-31 19:51:44,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [861480435] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:51:44,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:51:44,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34
[2022-01-31 19:51:44,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399317675]
[2022-01-31 19:51:44,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:51:44,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states
[2022-01-31 19:51:44,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:51:44,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2022-01-31 19:51:44,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122
[2022-01-31 19:51:44,344 INFO L87 Difference]: Start difference. First operand 182 states and 186 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 33 states have internal predecessors, (100), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2022-01-31 19:51:45,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:51:45,213 INFO L93 Difference]: Finished difference Result 250 states and 268 transitions.
[2022-01-31 19:51:45,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2022-01-31 19:51:45,213 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 33 states have internal predecessors, (100), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 171
[2022-01-31 19:51:45,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:51:45,214 INFO L225 Difference]: With dead ends: 250
[2022-01-31 19:51:45,214 INFO L226 Difference]: Without dead ends: 182
[2022-01-31 19:51:45,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=853, Invalid=3307, Unknown=0, NotChecked=0, Total=4160
[2022-01-31 19:51:45,215 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 73 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 19:51:45,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 92 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 19:51:45,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states.
[2022-01-31 19:51:45,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182.
[2022-01-31 19:51:45,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 148 states have (on average 1.027027027027027) internal successors, (152), 149 states have internal predecessors, (152), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16)
[2022-01-31 19:51:45,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 185 transitions.
[2022-01-31 19:51:45,371 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 185 transitions. Word has length 171
[2022-01-31 19:51:45,371 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:51:45,371 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 185 transitions.
[2022-01-31 19:51:45,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 33 states have internal predecessors, (100), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2022-01-31 19:51:45,371 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 185 transitions.
[2022-01-31 19:51:45,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175
[2022-01-31 19:51:45,372 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:51:45,372 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:51:45,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71
[2022-01-31 19:51:45,372 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:51:45,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:51:45,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1134170346, now seen corresponding path program 51 times
[2022-01-31 19:51:45,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:51:45,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849061619]
[2022-01-31 19:51:45,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:51:45,374 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:51:45,374 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:51:45,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:51:45,376 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:51:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:46,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:51:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:46,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58
[2022-01-31 19:51:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:46,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66
[2022-01-31 19:51:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:46,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74
[2022-01-31 19:51:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:46,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82
[2022-01-31 19:51:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:46,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90
[2022-01-31 19:51:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:46,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98
[2022-01-31 19:51:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:46,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106
[2022-01-31 19:51:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:46,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114
[2022-01-31 19:51:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:46,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122
[2022-01-31 19:51:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:46,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2022-01-31 19:51:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:46,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138
[2022-01-31 19:51:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:46,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146
[2022-01-31 19:51:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:46,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154
[2022-01-31 19:51:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:46,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162
[2022-01-31 19:51:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:46,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 19:51:46,584 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:51:46,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849061619]
[2022-01-31 19:51:46,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1849061619] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:51:46,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:51:46,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54
[2022-01-31 19:51:46,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728518849]
[2022-01-31 19:51:46,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:51:46,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states
[2022-01-31 19:51:46,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:51:46,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants.
[2022-01-31 19:51:46,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=2740, Unknown=0, NotChecked=0, Total=2862
[2022-01-31 19:51:46,586 INFO L87 Difference]: Start difference. First operand 182 states and 185 transitions. Second operand has 54 states, 53 states have (on average 1.9433962264150944) internal successors, (103), 52 states have internal predecessors, (103), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2022-01-31 19:51:49,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:51:49,931 INFO L93 Difference]: Finished difference Result 253 states and 271 transitions.
[2022-01-31 19:51:49,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states.
[2022-01-31 19:51:49,932 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.9433962264150944) internal successors, (103), 52 states have internal predecessors, (103), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 174
[2022-01-31 19:51:49,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:51:49,933 INFO L225 Difference]: With dead ends: 253
[2022-01-31 19:51:49,933 INFO L226 Difference]: Without dead ends: 251
[2022-01-31 19:51:49,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2537 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=396, Invalid=10524, Unknown=0, NotChecked=0, Total=10920
[2022-01-31 19:51:49,933 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 93 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 6060 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 6179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 6060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time
[2022-01-31 19:51:49,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 248 Invalid, 6179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 6060 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time]
[2022-01-31 19:51:49,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states.
[2022-01-31 19:51:50,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 245.
[2022-01-31 19:51:50,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 195 states have (on average 1.0205128205128204) internal successors, (199), 197 states have internal predecessors, (199), 32 states have call successors, (32), 18 states have call predecessors, (32), 17 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31)
[2022-01-31 19:51:50,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 262 transitions.
[2022-01-31 19:51:50,123 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 262 transitions. Word has length 174
[2022-01-31 19:51:50,123 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:51:50,123 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 262 transitions.
[2022-01-31 19:51:50,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.9433962264150944) internal successors, (103), 52 states have internal predecessors, (103), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2022-01-31 19:51:50,123 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 262 transitions.
[2022-01-31 19:51:50,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178
[2022-01-31 19:51:50,124 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:51:50,124 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:51:50,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72
[2022-01-31 19:51:50,124 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:51:50,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:51:50,124 INFO L85 PathProgramCache]: Analyzing trace with hash -229775238, now seen corresponding path program 52 times
[2022-01-31 19:51:50,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:51:50,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783815376]
[2022-01-31 19:51:50,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:51:50,126 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:51:50,126 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:51:50,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:51:50,127 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:51:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:51,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:51:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:51,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61
[2022-01-31 19:51:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:51,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69
[2022-01-31 19:51:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:51,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77
[2022-01-31 19:51:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:51,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85
[2022-01-31 19:51:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:51,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93
[2022-01-31 19:51:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:51,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101
[2022-01-31 19:51:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:51,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109
[2022-01-31 19:51:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:51,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117
[2022-01-31 19:51:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:51,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125
[2022-01-31 19:51:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:51,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133
[2022-01-31 19:51:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:51,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2022-01-31 19:51:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:51,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149
[2022-01-31 19:51:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:51,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157
[2022-01-31 19:51:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:51,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165
[2022-01-31 19:51:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:51,363 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 19:51:51,363 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:51:51,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783815376]
[2022-01-31 19:51:51,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1783815376] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:51:51,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:51:51,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55
[2022-01-31 19:51:51,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439617005]
[2022-01-31 19:51:51,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:51:51,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states
[2022-01-31 19:51:51,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:51:51,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants.
[2022-01-31 19:51:51,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2845, Unknown=0, NotChecked=0, Total=2970
[2022-01-31 19:51:51,365 INFO L87 Difference]: Start difference. First operand 245 states and 262 transitions. Second operand has 55 states, 54 states have (on average 1.962962962962963) internal successors, (106), 53 states have internal predecessors, (106), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2022-01-31 19:51:55,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:51:55,945 INFO L93 Difference]: Finished difference Result 323 states and 357 transitions.
[2022-01-31 19:51:55,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states.
[2022-01-31 19:51:55,946 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.962962962962963) internal successors, (106), 53 states have internal predecessors, (106), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 177
[2022-01-31 19:51:55,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:51:55,947 INFO L225 Difference]: With dead ends: 323
[2022-01-31 19:51:55,947 INFO L226 Difference]: Without dead ends: 321
[2022-01-31 19:51:55,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3778 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=552, Invalid=14454, Unknown=0, NotChecked=0, Total=15006
[2022-01-31 19:51:55,948 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 168 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 7016 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 7219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 7016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time
[2022-01-31 19:51:55,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 250 Invalid, 7219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 7016 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time]
[2022-01-31 19:51:55,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states.
[2022-01-31 19:51:56,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 246.
[2022-01-31 19:51:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 196 states have (on average 1.0255102040816326) internal successors, (201), 198 states have internal predecessors, (201), 32 states have call successors, (32), 18 states have call predecessors, (32), 17 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31)
[2022-01-31 19:51:56,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 264 transitions.
[2022-01-31 19:51:56,140 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 264 transitions. Word has length 177
[2022-01-31 19:51:56,140 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:51:56,140 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 264 transitions.
[2022-01-31 19:51:56,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.962962962962963) internal successors, (106), 53 states have internal predecessors, (106), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2022-01-31 19:51:56,141 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 264 transitions.
[2022-01-31 19:51:56,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180
[2022-01-31 19:51:56,142 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:51:56,142 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:51:56,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73
[2022-01-31 19:51:56,142 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:51:56,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:51:56,142 INFO L85 PathProgramCache]: Analyzing trace with hash 22183571, now seen corresponding path program 14 times
[2022-01-31 19:51:56,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:51:56,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019222237]
[2022-01-31 19:51:56,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:51:56,148 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:51:56,148 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:51:56,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:51:56,150 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:51:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:56,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:51:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:56,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63
[2022-01-31 19:51:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:56,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71
[2022-01-31 19:51:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:56,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2022-01-31 19:51:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:56,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2022-01-31 19:51:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:56,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95
[2022-01-31 19:51:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:56,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103
[2022-01-31 19:51:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:56,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2022-01-31 19:51:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:56,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119
[2022-01-31 19:51:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:56,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127
[2022-01-31 19:51:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:56,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2022-01-31 19:51:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:56,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143
[2022-01-31 19:51:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:56,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151
[2022-01-31 19:51:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:56,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2022-01-31 19:51:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:56,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167
[2022-01-31 19:51:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:56,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 19:51:56,404 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:51:56,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019222237]
[2022-01-31 19:51:56,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2019222237] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:51:56,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:51:56,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23
[2022-01-31 19:51:56,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639693805]
[2022-01-31 19:51:56,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:51:56,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2022-01-31 19:51:56,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:51:56,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2022-01-31 19:51:56,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=291, Unknown=0, NotChecked=0, Total=506
[2022-01-31 19:51:56,405 INFO L87 Difference]: Start difference. First operand 246 states and 264 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 22 states have internal predecessors, (68), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:51:57,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:51:57,134 INFO L93 Difference]: Finished difference Result 497 states and 549 transitions.
[2022-01-31 19:51:57,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2022-01-31 19:51:57,134 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 22 states have internal predecessors, (68), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 179
[2022-01-31 19:51:57,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:51:57,136 INFO L225 Difference]: With dead ends: 497
[2022-01-31 19:51:57,136 INFO L226 Difference]: Without dead ends: 376
[2022-01-31 19:51:57,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=675, Invalid=1131, Unknown=0, NotChecked=0, Total=1806
[2022-01-31 19:51:57,137 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 190 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:51:57,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 25 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:51:57,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states.
[2022-01-31 19:51:57,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 248.
[2022-01-31 19:51:57,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 198 states have (on average 1.0252525252525253) internal successors, (203), 200 states have internal predecessors, (203), 32 states have call successors, (32), 18 states have call predecessors, (32), 17 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31)
[2022-01-31 19:51:57,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 266 transitions.
[2022-01-31 19:51:57,331 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 266 transitions. Word has length 179
[2022-01-31 19:51:57,331 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:51:57,331 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 266 transitions.
[2022-01-31 19:51:57,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 22 states have internal predecessors, (68), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:51:57,331 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 266 transitions.
[2022-01-31 19:51:57,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181
[2022-01-31 19:51:57,332 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:51:57,332 INFO L514 BasicCegarLoop]: trace histogram [19, 18, 18, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:51:57,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74
[2022-01-31 19:51:57,332 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:51:57,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:51:57,333 INFO L85 PathProgramCache]: Analyzing trace with hash 275039382, now seen corresponding path program 53 times
[2022-01-31 19:51:57,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:51:57,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536732832]
[2022-01-31 19:51:57,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:51:57,334 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:51:57,335 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:51:57,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:51:57,336 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:51:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:58,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:51:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:58,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2022-01-31 19:51:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:58,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72
[2022-01-31 19:51:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:58,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80
[2022-01-31 19:51:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:58,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88
[2022-01-31 19:51:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:58,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96
[2022-01-31 19:51:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:58,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104
[2022-01-31 19:51:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:58,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112
[2022-01-31 19:51:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:58,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2022-01-31 19:51:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:58,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128
[2022-01-31 19:51:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:58,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2022-01-31 19:51:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:58,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144
[2022-01-31 19:51:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:58,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152
[2022-01-31 19:51:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:58,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160
[2022-01-31 19:51:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:58,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168
[2022-01-31 19:51:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:51:58,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 19:51:58,621 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:51:58,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536732832]
[2022-01-31 19:51:58,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1536732832] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:51:58,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:51:58,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56
[2022-01-31 19:51:58,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203427123]
[2022-01-31 19:51:58,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:51:58,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states
[2022-01-31 19:51:58,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:51:58,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants.
[2022-01-31 19:51:58,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=2951, Unknown=0, NotChecked=0, Total=3080
[2022-01-31 19:51:58,622 INFO L87 Difference]: Start difference. First operand 248 states and 266 transitions. Second operand has 56 states, 55 states have (on average 1.981818181818182) internal successors, (109), 54 states have internal predecessors, (109), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2022-01-31 19:52:01,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:52:01,896 INFO L93 Difference]: Finished difference Result 260 states and 278 transitions.
[2022-01-31 19:52:01,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states.
[2022-01-31 19:52:01,897 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.981818181818182) internal successors, (109), 54 states have internal predecessors, (109), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 180
[2022-01-31 19:52:01,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:52:01,898 INFO L225 Difference]: With dead ends: 260
[2022-01-31 19:52:01,898 INFO L226 Difference]: Without dead ends: 258
[2022-01-31 19:52:01,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2586 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=436, Invalid=10906, Unknown=0, NotChecked=0, Total=11342
[2022-01-31 19:52:01,899 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 137 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 5709 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 5877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 5709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time
[2022-01-31 19:52:01,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 234 Invalid, 5877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 5709 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time]
[2022-01-31 19:52:01,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states.
[2022-01-31 19:52:02,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 193.
[2022-01-31 19:52:02,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 157 states have (on average 1.0318471337579618) internal successors, (162), 158 states have internal predecessors, (162), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17)
[2022-01-31 19:52:02,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 197 transitions.
[2022-01-31 19:52:02,075 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 197 transitions. Word has length 180
[2022-01-31 19:52:02,075 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:52:02,075 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 197 transitions.
[2022-01-31 19:52:02,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 1.981818181818182) internal successors, (109), 54 states have internal predecessors, (109), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2022-01-31 19:52:02,075 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 197 transitions.
[2022-01-31 19:52:02,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183
[2022-01-31 19:52:02,076 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:52:02,076 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:52:02,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75
[2022-01-31 19:52:02,076 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:52:02,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:52:02,076 INFO L85 PathProgramCache]: Analyzing trace with hash 589929712, now seen corresponding path program 54 times
[2022-01-31 19:52:02,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:52:02,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594512328]
[2022-01-31 19:52:02,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:52:02,078 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:52:02,078 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:52:02,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:52:02,080 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:52:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:02,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:52:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:02,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58
[2022-01-31 19:52:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:02,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66
[2022-01-31 19:52:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:02,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74
[2022-01-31 19:52:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:02,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82
[2022-01-31 19:52:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:02,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90
[2022-01-31 19:52:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:02,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98
[2022-01-31 19:52:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:02,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106
[2022-01-31 19:52:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:02,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114
[2022-01-31 19:52:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:02,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122
[2022-01-31 19:52:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:02,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2022-01-31 19:52:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:02,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138
[2022-01-31 19:52:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:02,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146
[2022-01-31 19:52:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:02,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154
[2022-01-31 19:52:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:02,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162
[2022-01-31 19:52:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:02,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170
[2022-01-31 19:52:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:02,475 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 19:52:02,475 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:52:02,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594512328]
[2022-01-31 19:52:02,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [594512328] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:52:02,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:52:02,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36
[2022-01-31 19:52:02,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663360003]
[2022-01-31 19:52:02,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:52:02,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states
[2022-01-31 19:52:02,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:52:02,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2022-01-31 19:52:02,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260
[2022-01-31 19:52:02,476 INFO L87 Difference]: Start difference. First operand 193 states and 197 transitions. Second operand has 36 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 35 states have internal predecessors, (106), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2022-01-31 19:52:03,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:52:03,496 INFO L93 Difference]: Finished difference Result 265 states and 284 transitions.
[2022-01-31 19:52:03,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2022-01-31 19:52:03,496 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 35 states have internal predecessors, (106), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 182
[2022-01-31 19:52:03,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:52:03,497 INFO L225 Difference]: With dead ends: 265
[2022-01-31 19:52:03,497 INFO L226 Difference]: Without dead ends: 193
[2022-01-31 19:52:03,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=957, Invalid=3735, Unknown=0, NotChecked=0, Total=4692
[2022-01-31 19:52:03,498 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 76 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 19:52:03,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 94 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 19:52:03,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states.
[2022-01-31 19:52:03,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193.
[2022-01-31 19:52:03,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 157 states have (on average 1.0254777070063694) internal successors, (161), 158 states have internal predecessors, (161), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17)
[2022-01-31 19:52:03,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 196 transitions.
[2022-01-31 19:52:03,650 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 196 transitions. Word has length 182
[2022-01-31 19:52:03,650 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:52:03,650 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 196 transitions.
[2022-01-31 19:52:03,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 35 states have internal predecessors, (106), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2022-01-31 19:52:03,650 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 196 transitions.
[2022-01-31 19:52:03,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186
[2022-01-31 19:52:03,650 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:52:03,650 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:52:03,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76
[2022-01-31 19:52:03,651 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:52:03,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:52:03,651 INFO L85 PathProgramCache]: Analyzing trace with hash -54267308, now seen corresponding path program 55 times
[2022-01-31 19:52:03,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:52:03,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357297786]
[2022-01-31 19:52:03,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:52:03,652 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:52:03,652 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:52:03,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:52:03,654 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:52:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:04,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:52:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:04,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61
[2022-01-31 19:52:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:04,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69
[2022-01-31 19:52:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:04,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77
[2022-01-31 19:52:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:04,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85
[2022-01-31 19:52:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:04,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93
[2022-01-31 19:52:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:04,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101
[2022-01-31 19:52:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:04,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109
[2022-01-31 19:52:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:04,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117
[2022-01-31 19:52:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:04,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125
[2022-01-31 19:52:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:04,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133
[2022-01-31 19:52:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:04,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2022-01-31 19:52:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:04,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149
[2022-01-31 19:52:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:04,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157
[2022-01-31 19:52:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:04,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165
[2022-01-31 19:52:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:04,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173
[2022-01-31 19:52:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:04,906 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 19:52:04,906 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:52:04,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357297786]
[2022-01-31 19:52:04,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [357297786] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:52:04,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:52:04,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57
[2022-01-31 19:52:04,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536523933]
[2022-01-31 19:52:04,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:52:04,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states
[2022-01-31 19:52:04,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:52:04,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants.
[2022-01-31 19:52:04,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=3063, Unknown=0, NotChecked=0, Total=3192
[2022-01-31 19:52:04,907 INFO L87 Difference]: Start difference. First operand 193 states and 196 transitions. Second operand has 57 states, 56 states have (on average 1.9464285714285714) internal successors, (109), 55 states have internal predecessors, (109), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2022-01-31 19:52:08,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:52:08,566 INFO L93 Difference]: Finished difference Result 268 states and 287 transitions.
[2022-01-31 19:52:08,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states.
[2022-01-31 19:52:08,566 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.9464285714285714) internal successors, (109), 55 states have internal predecessors, (109), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 185
[2022-01-31 19:52:08,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:52:08,567 INFO L225 Difference]: With dead ends: 268
[2022-01-31 19:52:08,567 INFO L226 Difference]: Without dead ends: 266
[2022-01-31 19:52:08,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2857 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=419, Invalid=11791, Unknown=0, NotChecked=0, Total=12210
[2022-01-31 19:52:08,568 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 97 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 6624 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 6750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 6624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time
[2022-01-31 19:52:08,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 255 Invalid, 6750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 6624 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time]
[2022-01-31 19:52:08,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states.
[2022-01-31 19:52:08,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 260.
[2022-01-31 19:52:08,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 207 states have (on average 1.0193236714975846) internal successors, (211), 209 states have internal predecessors, (211), 34 states have call successors, (34), 19 states have call predecessors, (34), 18 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33)
[2022-01-31 19:52:08,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 278 transitions.
[2022-01-31 19:52:08,812 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 278 transitions. Word has length 185
[2022-01-31 19:52:08,812 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:52:08,812 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 278 transitions.
[2022-01-31 19:52:08,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.9464285714285714) internal successors, (109), 55 states have internal predecessors, (109), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2022-01-31 19:52:08,812 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 278 transitions.
[2022-01-31 19:52:08,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189
[2022-01-31 19:52:08,813 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:52:08,813 INFO L514 BasicCegarLoop]: trace histogram [19, 18, 18, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:52:08,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77
[2022-01-31 19:52:08,813 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:52:08,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:52:08,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1413811600, now seen corresponding path program 56 times
[2022-01-31 19:52:08,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:52:08,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234035764]
[2022-01-31 19:52:08,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:52:08,815 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:52:08,815 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:52:08,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:52:08,816 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:52:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:10,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:52:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:10,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2022-01-31 19:52:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:10,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72
[2022-01-31 19:52:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:10,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80
[2022-01-31 19:52:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:10,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88
[2022-01-31 19:52:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:10,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96
[2022-01-31 19:52:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:10,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104
[2022-01-31 19:52:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:10,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112
[2022-01-31 19:52:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:10,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2022-01-31 19:52:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:10,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128
[2022-01-31 19:52:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:10,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2022-01-31 19:52:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:10,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144
[2022-01-31 19:52:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:10,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152
[2022-01-31 19:52:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:10,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160
[2022-01-31 19:52:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:10,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168
[2022-01-31 19:52:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:10,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176
[2022-01-31 19:52:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:10,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 19:52:10,157 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:52:10,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234035764]
[2022-01-31 19:52:10,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [234035764] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:52:10,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:52:10,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58
[2022-01-31 19:52:10,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478587747]
[2022-01-31 19:52:10,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:52:10,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states
[2022-01-31 19:52:10,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:52:10,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants.
[2022-01-31 19:52:10,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=3174, Unknown=0, NotChecked=0, Total=3306
[2022-01-31 19:52:10,158 INFO L87 Difference]: Start difference. First operand 260 states and 278 transitions. Second operand has 58 states, 57 states have (on average 1.9649122807017543) internal successors, (112), 56 states have internal predecessors, (112), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2022-01-31 19:52:14,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:52:14,882 INFO L93 Difference]: Finished difference Result 342 states and 378 transitions.
[2022-01-31 19:52:14,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states.
[2022-01-31 19:52:14,882 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.9649122807017543) internal successors, (112), 56 states have internal predecessors, (112), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 188
[2022-01-31 19:52:14,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:52:14,883 INFO L225 Difference]: With dead ends: 342
[2022-01-31 19:52:14,883 INFO L226 Difference]: Without dead ends: 340
[2022-01-31 19:52:14,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4252 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=584, Invalid=16186, Unknown=0, NotChecked=0, Total=16770
[2022-01-31 19:52:14,884 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 177 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 7344 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 7560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 7344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time
[2022-01-31 19:52:14,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 250 Invalid, 7560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 7344 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time]
[2022-01-31 19:52:14,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states.
[2022-01-31 19:52:15,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 261.
[2022-01-31 19:52:15,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 208 states have (on average 1.0240384615384615) internal successors, (213), 210 states have internal predecessors, (213), 34 states have call successors, (34), 19 states have call predecessors, (34), 18 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33)
[2022-01-31 19:52:15,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 280 transitions.
[2022-01-31 19:52:15,112 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 280 transitions. Word has length 188
[2022-01-31 19:52:15,112 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:52:15,112 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 280 transitions.
[2022-01-31 19:52:15,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 1.9649122807017543) internal successors, (112), 56 states have internal predecessors, (112), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2022-01-31 19:52:15,112 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 280 transitions.
[2022-01-31 19:52:15,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191
[2022-01-31 19:52:15,113 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:52:15,113 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:52:15,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78
[2022-01-31 19:52:15,113 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:52:15,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:52:15,113 INFO L85 PathProgramCache]: Analyzing trace with hash 683198601, now seen corresponding path program 15 times
[2022-01-31 19:52:15,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:52:15,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35689385]
[2022-01-31 19:52:15,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:52:15,114 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:52:15,114 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:52:15,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:52:15,116 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:52:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:15,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:52:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:15,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66
[2022-01-31 19:52:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:15,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74
[2022-01-31 19:52:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:15,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82
[2022-01-31 19:52:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:15,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90
[2022-01-31 19:52:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:15,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98
[2022-01-31 19:52:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:15,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106
[2022-01-31 19:52:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:15,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114
[2022-01-31 19:52:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:15,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122
[2022-01-31 19:52:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:15,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2022-01-31 19:52:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:15,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138
[2022-01-31 19:52:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:15,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146
[2022-01-31 19:52:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:15,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154
[2022-01-31 19:52:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:15,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162
[2022-01-31 19:52:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:15,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170
[2022-01-31 19:52:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:15,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178
[2022-01-31 19:52:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:15,366 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 19:52:15,366 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:52:15,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35689385]
[2022-01-31 19:52:15,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [35689385] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:52:15,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:52:15,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24
[2022-01-31 19:52:15,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789692308]
[2022-01-31 19:52:15,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:52:15,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-01-31 19:52:15,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:52:15,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-01-31 19:52:15,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552
[2022-01-31 19:52:15,368 INFO L87 Difference]: Start difference. First operand 261 states and 280 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:52:16,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:52:16,233 INFO L93 Difference]: Finished difference Result 528 states and 583 transitions.
[2022-01-31 19:52:16,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2022-01-31 19:52:16,234 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 190
[2022-01-31 19:52:16,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:52:16,235 INFO L225 Difference]: With dead ends: 528
[2022-01-31 19:52:16,235 INFO L226 Difference]: Without dead ends: 399
[2022-01-31 19:52:16,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=740, Invalid=1240, Unknown=0, NotChecked=0, Total=1980
[2022-01-31 19:52:16,236 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 196 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:52:16,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 23 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:52:16,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states.
[2022-01-31 19:52:16,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 263.
[2022-01-31 19:52:16,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 210 states have (on average 1.0238095238095237) internal successors, (215), 212 states have internal predecessors, (215), 34 states have call successors, (34), 19 states have call predecessors, (34), 18 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33)
[2022-01-31 19:52:16,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 282 transitions.
[2022-01-31 19:52:16,453 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 282 transitions. Word has length 190
[2022-01-31 19:52:16,453 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:52:16,454 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 282 transitions.
[2022-01-31 19:52:16,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:52:16,454 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 282 transitions.
[2022-01-31 19:52:16,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192
[2022-01-31 19:52:16,455 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:52:16,455 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:52:16,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79
[2022-01-31 19:52:16,455 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:52:16,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:52:16,455 INFO L85 PathProgramCache]: Analyzing trace with hash -2056213292, now seen corresponding path program 57 times
[2022-01-31 19:52:16,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:52:16,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808672430]
[2022-01-31 19:52:16,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:52:16,457 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:52:16,457 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:52:16,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:52:16,459 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:52:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:17,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:52:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:17,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67
[2022-01-31 19:52:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:17,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75
[2022-01-31 19:52:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:17,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2022-01-31 19:52:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:17,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2022-01-31 19:52:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:17,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2022-01-31 19:52:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:17,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107
[2022-01-31 19:52:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:17,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115
[2022-01-31 19:52:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:17,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123
[2022-01-31 19:52:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:17,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2022-01-31 19:52:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:17,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139
[2022-01-31 19:52:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:17,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147
[2022-01-31 19:52:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:17,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155
[2022-01-31 19:52:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:17,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163
[2022-01-31 19:52:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:17,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171
[2022-01-31 19:52:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:17,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179
[2022-01-31 19:52:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:17,930 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 19:52:17,930 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:52:17,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808672430]
[2022-01-31 19:52:17,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1808672430] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:52:17,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:52:17,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59
[2022-01-31 19:52:17,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071101746]
[2022-01-31 19:52:17,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:52:17,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states
[2022-01-31 19:52:17,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:52:17,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants.
[2022-01-31 19:52:17,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=3286, Unknown=0, NotChecked=0, Total=3422
[2022-01-31 19:52:17,932 INFO L87 Difference]: Start difference. First operand 263 states and 282 transitions. Second operand has 59 states, 58 states have (on average 1.9827586206896552) internal successors, (115), 57 states have internal predecessors, (115), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2022-01-31 19:52:21,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:52:21,559 INFO L93 Difference]: Finished difference Result 275 states and 294 transitions.
[2022-01-31 19:52:21,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states.
[2022-01-31 19:52:21,560 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.9827586206896552) internal successors, (115), 57 states have internal predecessors, (115), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 191
[2022-01-31 19:52:21,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:52:21,561 INFO L225 Difference]: With dead ends: 275
[2022-01-31 19:52:21,561 INFO L226 Difference]: Without dead ends: 273
[2022-01-31 19:52:21,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2909 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=461, Invalid=12195, Unknown=0, NotChecked=0, Total=12656
[2022-01-31 19:52:21,561 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 182 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 6332 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 6543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 6332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:52:21,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 245 Invalid, 6543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 6332 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time]
[2022-01-31 19:52:21,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states.
[2022-01-31 19:52:21,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 204.
[2022-01-31 19:52:21,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 166 states have (on average 1.0301204819277108) internal successors, (171), 167 states have internal predecessors, (171), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18)
[2022-01-31 19:52:21,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 208 transitions.
[2022-01-31 19:52:21,695 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 208 transitions. Word has length 191
[2022-01-31 19:52:21,695 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:52:21,695 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 208 transitions.
[2022-01-31 19:52:21,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 1.9827586206896552) internal successors, (115), 57 states have internal predecessors, (115), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2022-01-31 19:52:21,695 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 208 transitions.
[2022-01-31 19:52:21,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194
[2022-01-31 19:52:21,696 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:52:21,696 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:52:21,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80
[2022-01-31 19:52:21,696 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:52:21,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:52:21,696 INFO L85 PathProgramCache]: Analyzing trace with hash -613973458, now seen corresponding path program 58 times
[2022-01-31 19:52:21,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:52:21,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225093330]
[2022-01-31 19:52:21,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:52:21,698 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:52:21,698 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:52:21,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:52:21,700 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:52:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:22,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:52:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:22,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61
[2022-01-31 19:52:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:22,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69
[2022-01-31 19:52:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:22,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77
[2022-01-31 19:52:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:22,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85
[2022-01-31 19:52:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:22,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93
[2022-01-31 19:52:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:22,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101
[2022-01-31 19:52:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:22,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109
[2022-01-31 19:52:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:22,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117
[2022-01-31 19:52:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:22,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125
[2022-01-31 19:52:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:22,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133
[2022-01-31 19:52:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:22,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2022-01-31 19:52:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:22,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149
[2022-01-31 19:52:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:22,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157
[2022-01-31 19:52:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:22,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165
[2022-01-31 19:52:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:22,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173
[2022-01-31 19:52:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:22,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181
[2022-01-31 19:52:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:22,149 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 19:52:22,150 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:52:22,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225093330]
[2022-01-31 19:52:22,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1225093330] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:52:22,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:52:22,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38
[2022-01-31 19:52:22,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122293013]
[2022-01-31 19:52:22,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:52:22,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states
[2022-01-31 19:52:22,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:52:22,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2022-01-31 19:52:22,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406
[2022-01-31 19:52:22,151 INFO L87 Difference]: Start difference. First operand 204 states and 208 transitions. Second operand has 38 states, 38 states have (on average 2.9473684210526314) internal successors, (112), 37 states have internal predecessors, (112), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17)
[2022-01-31 19:52:23,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:52:23,117 INFO L93 Difference]: Finished difference Result 280 states and 300 transitions.
[2022-01-31 19:52:23,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2022-01-31 19:52:23,117 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.9473684210526314) internal successors, (112), 37 states have internal predecessors, (112), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 193
[2022-01-31 19:52:23,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:52:23,118 INFO L225 Difference]: With dead ends: 280
[2022-01-31 19:52:23,118 INFO L226 Difference]: Without dead ends: 204
[2022-01-31 19:52:23,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1067, Invalid=4189, Unknown=0, NotChecked=0, Total=5256
[2022-01-31 19:52:23,119 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 79 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 19:52:23,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 71 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 19:52:23,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states.
[2022-01-31 19:52:23,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204.
[2022-01-31 19:52:23,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 166 states have (on average 1.0240963855421688) internal successors, (170), 167 states have internal predecessors, (170), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18)
[2022-01-31 19:52:23,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 207 transitions.
[2022-01-31 19:52:23,252 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 207 transitions. Word has length 193
[2022-01-31 19:52:23,252 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:52:23,252 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 207 transitions.
[2022-01-31 19:52:23,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.9473684210526314) internal successors, (112), 37 states have internal predecessors, (112), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17)
[2022-01-31 19:52:23,252 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 207 transitions.
[2022-01-31 19:52:23,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197
[2022-01-31 19:52:23,253 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:52:23,253 INFO L514 BasicCegarLoop]: trace histogram [19, 18, 18, 17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:52:23,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81
[2022-01-31 19:52:23,253 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:52:23,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:52:23,253 INFO L85 PathProgramCache]: Analyzing trace with hash -623204790, now seen corresponding path program 59 times
[2022-01-31 19:52:23,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:52:23,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601027374]
[2022-01-31 19:52:23,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:52:23,254 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:52:23,254 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:52:23,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:52:23,256 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:52:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:24,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:52:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:24,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2022-01-31 19:52:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:24,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72
[2022-01-31 19:52:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:24,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80
[2022-01-31 19:52:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:24,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88
[2022-01-31 19:52:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:24,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96
[2022-01-31 19:52:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:24,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104
[2022-01-31 19:52:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:24,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112
[2022-01-31 19:52:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:24,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2022-01-31 19:52:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:24,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128
[2022-01-31 19:52:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:24,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2022-01-31 19:52:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:24,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144
[2022-01-31 19:52:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:24,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152
[2022-01-31 19:52:24,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:24,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160
[2022-01-31 19:52:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:24,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168
[2022-01-31 19:52:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:24,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176
[2022-01-31 19:52:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:24,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184
[2022-01-31 19:52:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 19:52:24,606 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:52:24,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601027374]
[2022-01-31 19:52:24,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1601027374] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:52:24,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:52:24,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60
[2022-01-31 19:52:24,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889127845]
[2022-01-31 19:52:24,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:52:24,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states
[2022-01-31 19:52:24,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:52:24,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants.
[2022-01-31 19:52:24,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=3404, Unknown=0, NotChecked=0, Total=3540
[2022-01-31 19:52:24,608 INFO L87 Difference]: Start difference. First operand 204 states and 207 transitions. Second operand has 60 states, 59 states have (on average 1.9491525423728813) internal successors, (115), 58 states have internal predecessors, (115), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17)
[2022-01-31 19:52:28,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:52:28,762 INFO L93 Difference]: Finished difference Result 283 states and 303 transitions.
[2022-01-31 19:52:28,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2022-01-31 19:52:28,763 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.9491525423728813) internal successors, (115), 58 states have internal predecessors, (115), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 196
[2022-01-31 19:52:28,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:52:28,764 INFO L225 Difference]: With dead ends: 283
[2022-01-31 19:52:28,764 INFO L226 Difference]: Without dead ends: 281
[2022-01-31 19:52:28,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3196 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=442, Invalid=13130, Unknown=0, NotChecked=0, Total=13572
[2022-01-31 19:52:28,765 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 101 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 7684 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 7817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 7684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time
[2022-01-31 19:52:28,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 280 Invalid, 7817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 7684 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time]
[2022-01-31 19:52:28,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states.
[2022-01-31 19:52:29,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 275.
[2022-01-31 19:52:29,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 219 states have (on average 1.0182648401826484) internal successors, (223), 221 states have internal predecessors, (223), 36 states have call successors, (36), 20 states have call predecessors, (36), 19 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35)
[2022-01-31 19:52:29,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 294 transitions.
[2022-01-31 19:52:29,020 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 294 transitions. Word has length 196
[2022-01-31 19:52:29,020 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:52:29,020 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 294 transitions.
[2022-01-31 19:52:29,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.9491525423728813) internal successors, (115), 58 states have internal predecessors, (115), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17)
[2022-01-31 19:52:29,020 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 294 transitions.
[2022-01-31 19:52:29,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200
[2022-01-31 19:52:29,021 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:52:29,021 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:52:29,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82
[2022-01-31 19:52:29,021 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:52:29,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:52:29,021 INFO L85 PathProgramCache]: Analyzing trace with hash -755909458, now seen corresponding path program 60 times
[2022-01-31 19:52:29,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:52:29,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075274105]
[2022-01-31 19:52:29,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:52:29,023 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:52:29,023 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:52:29,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:52:29,025 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:52:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:30,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:52:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:30,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67
[2022-01-31 19:52:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:30,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75
[2022-01-31 19:52:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:30,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2022-01-31 19:52:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:30,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2022-01-31 19:52:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:30,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2022-01-31 19:52:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:30,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107
[2022-01-31 19:52:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:30,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115
[2022-01-31 19:52:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:30,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123
[2022-01-31 19:52:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:30,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2022-01-31 19:52:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:30,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139
[2022-01-31 19:52:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:30,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147
[2022-01-31 19:52:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:30,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155
[2022-01-31 19:52:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:30,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163
[2022-01-31 19:52:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:30,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171
[2022-01-31 19:52:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:30,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179
[2022-01-31 19:52:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:30,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187
[2022-01-31 19:52:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:30,432 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 19:52:30,432 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:52:30,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075274105]
[2022-01-31 19:52:30,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1075274105] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:52:30,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:52:30,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61
[2022-01-31 19:52:30,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797825360]
[2022-01-31 19:52:30,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:52:30,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states
[2022-01-31 19:52:30,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:52:30,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants.
[2022-01-31 19:52:30,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=3521, Unknown=0, NotChecked=0, Total=3660
[2022-01-31 19:52:30,434 INFO L87 Difference]: Start difference. First operand 275 states and 294 transitions. Second operand has 61 states, 60 states have (on average 1.9666666666666666) internal successors, (118), 59 states have internal predecessors, (118), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17)
[2022-01-31 19:52:35,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:52:35,633 INFO L93 Difference]: Finished difference Result 361 states and 399 transitions.
[2022-01-31 19:52:35,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states.
[2022-01-31 19:52:35,634 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.9666666666666666) internal successors, (118), 59 states have internal predecessors, (118), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 199
[2022-01-31 19:52:35,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:52:35,635 INFO L225 Difference]: With dead ends: 361
[2022-01-31 19:52:35,635 INFO L226 Difference]: Without dead ends: 359
[2022-01-31 19:52:35,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4754 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=616, Invalid=18016, Unknown=0, NotChecked=0, Total=18632
[2022-01-31 19:52:35,636 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 147 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 8601 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 8794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 8601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time
[2022-01-31 19:52:35,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 279 Invalid, 8794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 8601 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time]
[2022-01-31 19:52:35,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states.
[2022-01-31 19:52:35,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 276.
[2022-01-31 19:52:35,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 220 states have (on average 1.0227272727272727) internal successors, (225), 222 states have internal predecessors, (225), 36 states have call successors, (36), 20 states have call predecessors, (36), 19 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35)
[2022-01-31 19:52:35,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 296 transitions.
[2022-01-31 19:52:35,884 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 296 transitions. Word has length 199
[2022-01-31 19:52:35,885 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:52:35,885 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 296 transitions.
[2022-01-31 19:52:35,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 1.9666666666666666) internal successors, (118), 59 states have internal predecessors, (118), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17)
[2022-01-31 19:52:35,885 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 296 transitions.
[2022-01-31 19:52:35,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202
[2022-01-31 19:52:35,885 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:52:35,886 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:52:35,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83
[2022-01-31 19:52:35,886 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:52:35,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:52:35,886 INFO L85 PathProgramCache]: Analyzing trace with hash 150757575, now seen corresponding path program 16 times
[2022-01-31 19:52:35,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:52:35,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920604253]
[2022-01-31 19:52:35,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:52:35,887 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:52:35,888 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:52:35,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:52:35,889 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:52:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:36,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:52:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:36,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69
[2022-01-31 19:52:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:36,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77
[2022-01-31 19:52:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:36,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85
[2022-01-31 19:52:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:36,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93
[2022-01-31 19:52:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:36,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101
[2022-01-31 19:52:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:36,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109
[2022-01-31 19:52:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:36,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117
[2022-01-31 19:52:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:36,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125
[2022-01-31 19:52:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:36,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133
[2022-01-31 19:52:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:36,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2022-01-31 19:52:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:36,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149
[2022-01-31 19:52:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:36,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157
[2022-01-31 19:52:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:36,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165
[2022-01-31 19:52:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:36,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173
[2022-01-31 19:52:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:36,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181
[2022-01-31 19:52:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:36,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189
[2022-01-31 19:52:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:36,147 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 19:52:36,147 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:52:36,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920604253]
[2022-01-31 19:52:36,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [920604253] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:52:36,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:52:36,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25
[2022-01-31 19:52:36,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503730043]
[2022-01-31 19:52:36,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:52:36,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2022-01-31 19:52:36,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:52:36,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2022-01-31 19:52:36,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=342, Unknown=0, NotChecked=0, Total=600
[2022-01-31 19:52:36,148 INFO L87 Difference]: Start difference. First operand 276 states and 296 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 24 states have internal predecessors, (74), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:52:37,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:52:37,033 INFO L93 Difference]: Finished difference Result 559 states and 617 transitions.
[2022-01-31 19:52:37,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2022-01-31 19:52:37,034 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 24 states have internal predecessors, (74), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 201
[2022-01-31 19:52:37,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:52:37,035 INFO L225 Difference]: With dead ends: 559
[2022-01-31 19:52:37,035 INFO L226 Difference]: Without dead ends: 422
[2022-01-31 19:52:37,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=808, Invalid=1354, Unknown=0, NotChecked=0, Total=2162
[2022-01-31 19:52:37,036 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 210 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:52:37,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 23 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:52:37,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states.
[2022-01-31 19:52:37,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 278.
[2022-01-31 19:52:37,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 222 states have (on average 1.0225225225225225) internal successors, (227), 224 states have internal predecessors, (227), 36 states have call successors, (36), 20 states have call predecessors, (36), 19 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35)
[2022-01-31 19:52:37,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 298 transitions.
[2022-01-31 19:52:37,290 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 298 transitions. Word has length 201
[2022-01-31 19:52:37,290 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:52:37,290 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 298 transitions.
[2022-01-31 19:52:37,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 24 states have internal predecessors, (74), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:52:37,290 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 298 transitions.
[2022-01-31 19:52:37,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203
[2022-01-31 19:52:37,291 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:52:37,291 INFO L514 BasicCegarLoop]: trace histogram [21, 20, 20, 17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:52:37,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84
[2022-01-31 19:52:37,291 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:52:37,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:52:37,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1504205770, now seen corresponding path program 61 times
[2022-01-31 19:52:37,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:52:37,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842720755]
[2022-01-31 19:52:37,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:52:37,293 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:52:37,293 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:52:37,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:52:37,295 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:52:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:38,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:52:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:38,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2022-01-31 19:52:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:38,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78
[2022-01-31 19:52:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:38,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2022-01-31 19:52:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:38,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94
[2022-01-31 19:52:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:38,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102
[2022-01-31 19:52:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:38,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110
[2022-01-31 19:52:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:38,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118
[2022-01-31 19:52:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:38,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126
[2022-01-31 19:52:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:38,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2022-01-31 19:52:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:38,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142
[2022-01-31 19:52:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:38,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150
[2022-01-31 19:52:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:38,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158
[2022-01-31 19:52:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:38,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166
[2022-01-31 19:52:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:38,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174
[2022-01-31 19:52:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:38,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182
[2022-01-31 19:52:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:38,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190
[2022-01-31 19:52:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 19:52:38,718 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:52:38,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842720755]
[2022-01-31 19:52:38,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1842720755] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:52:38,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:52:38,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62
[2022-01-31 19:52:38,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359972453]
[2022-01-31 19:52:38,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:52:38,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states
[2022-01-31 19:52:38,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:52:38,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants.
[2022-01-31 19:52:38,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=3639, Unknown=0, NotChecked=0, Total=3782
[2022-01-31 19:52:38,720 INFO L87 Difference]: Start difference. First operand 278 states and 298 transitions. Second operand has 62 states, 61 states have (on average 1.9836065573770492) internal successors, (121), 60 states have internal predecessors, (121), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17)
[2022-01-31 19:52:42,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:52:42,966 INFO L93 Difference]: Finished difference Result 290 states and 310 transitions.
[2022-01-31 19:52:42,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2022-01-31 19:52:42,967 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.9836065573770492) internal successors, (121), 60 states have internal predecessors, (121), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 202
[2022-01-31 19:52:42,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:52:42,968 INFO L225 Difference]: With dead ends: 290
[2022-01-31 19:52:42,968 INFO L226 Difference]: Without dead ends: 288
[2022-01-31 19:52:42,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3251 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=486, Invalid=13556, Unknown=0, NotChecked=0, Total=14042
[2022-01-31 19:52:42,968 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 191 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 7748 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 7971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 7748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time
[2022-01-31 19:52:42,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 281 Invalid, 7971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 7748 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time]
[2022-01-31 19:52:42,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states.
[2022-01-31 19:52:43,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 215.
[2022-01-31 19:52:43,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 175 states have (on average 1.0285714285714285) internal successors, (180), 176 states have internal predecessors, (180), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19)
[2022-01-31 19:52:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 219 transitions.
[2022-01-31 19:52:43,131 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 219 transitions. Word has length 202
[2022-01-31 19:52:43,131 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:52:43,132 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 219 transitions.
[2022-01-31 19:52:43,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.9836065573770492) internal successors, (121), 60 states have internal predecessors, (121), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17)
[2022-01-31 19:52:43,132 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 219 transitions.
[2022-01-31 19:52:43,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205
[2022-01-31 19:52:43,133 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:52:43,133 INFO L514 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:52:43,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85
[2022-01-31 19:52:43,133 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:52:43,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:52:43,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1763844060, now seen corresponding path program 62 times
[2022-01-31 19:52:43,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:52:43,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184985706]
[2022-01-31 19:52:43,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:52:43,135 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:52:43,135 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:52:43,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:52:43,137 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:52:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:43,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:52:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:43,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2022-01-31 19:52:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:43,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72
[2022-01-31 19:52:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:43,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80
[2022-01-31 19:52:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:43,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88
[2022-01-31 19:52:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:43,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96
[2022-01-31 19:52:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:43,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104
[2022-01-31 19:52:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:43,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112
[2022-01-31 19:52:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:43,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2022-01-31 19:52:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:43,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128
[2022-01-31 19:52:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:43,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2022-01-31 19:52:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:43,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144
[2022-01-31 19:52:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:43,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152
[2022-01-31 19:52:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:43,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160
[2022-01-31 19:52:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:43,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168
[2022-01-31 19:52:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:43,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176
[2022-01-31 19:52:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:43,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184
[2022-01-31 19:52:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:43,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192
[2022-01-31 19:52:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 19:52:43,692 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:52:43,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184985706]
[2022-01-31 19:52:43,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1184985706] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:52:43,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:52:43,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40
[2022-01-31 19:52:43,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797672238]
[2022-01-31 19:52:43,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:52:43,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states
[2022-01-31 19:52:43,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:52:43,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants.
[2022-01-31 19:52:43,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=1175, Unknown=0, NotChecked=0, Total=1560
[2022-01-31 19:52:43,693 INFO L87 Difference]: Start difference. First operand 215 states and 219 transitions. Second operand has 40 states, 40 states have (on average 2.95) internal successors, (118), 39 states have internal predecessors, (118), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18)
[2022-01-31 19:52:44,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:52:44,856 INFO L93 Difference]: Finished difference Result 295 states and 316 transitions.
[2022-01-31 19:52:44,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2022-01-31 19:52:44,857 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.95) internal successors, (118), 39 states have internal predecessors, (118), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 204
[2022-01-31 19:52:44,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:52:44,858 INFO L225 Difference]: With dead ends: 295
[2022-01-31 19:52:44,858 INFO L226 Difference]: Without dead ends: 215
[2022-01-31 19:52:44,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1328 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1183, Invalid=4669, Unknown=0, NotChecked=0, Total=5852
[2022-01-31 19:52:44,859 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 82 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 19:52:44,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 93 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 19:52:44,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states.
[2022-01-31 19:52:45,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215.
[2022-01-31 19:52:45,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 175 states have (on average 1.022857142857143) internal successors, (179), 176 states have internal predecessors, (179), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19)
[2022-01-31 19:52:45,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 218 transitions.
[2022-01-31 19:52:45,023 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 218 transitions. Word has length 204
[2022-01-31 19:52:45,023 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:52:45,023 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 218 transitions.
[2022-01-31 19:52:45,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.95) internal successors, (118), 39 states have internal predecessors, (118), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18)
[2022-01-31 19:52:45,024 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 218 transitions.
[2022-01-31 19:52:45,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208
[2022-01-31 19:52:45,024 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:52:45,024 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:52:45,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86
[2022-01-31 19:52:45,025 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:52:45,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:52:45,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1413108360, now seen corresponding path program 63 times
[2022-01-31 19:52:45,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:52:45,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476330475]
[2022-01-31 19:52:45,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:52:45,026 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:52:45,026 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:52:45,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:52:45,028 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:52:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:46,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:52:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:46,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67
[2022-01-31 19:52:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:46,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75
[2022-01-31 19:52:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:46,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2022-01-31 19:52:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:46,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2022-01-31 19:52:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:46,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2022-01-31 19:52:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:46,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107
[2022-01-31 19:52:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:46,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115
[2022-01-31 19:52:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:46,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123
[2022-01-31 19:52:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:46,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2022-01-31 19:52:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:46,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139
[2022-01-31 19:52:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:46,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147
[2022-01-31 19:52:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:46,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155
[2022-01-31 19:52:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:46,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163
[2022-01-31 19:52:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:46,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171
[2022-01-31 19:52:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:46,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179
[2022-01-31 19:52:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:46,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187
[2022-01-31 19:52:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:46,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195
[2022-01-31 19:52:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:46,513 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 19:52:46,513 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:52:46,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476330475]
[2022-01-31 19:52:46,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1476330475] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:52:46,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:52:46,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63
[2022-01-31 19:52:46,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384782938]
[2022-01-31 19:52:46,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:52:46,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states
[2022-01-31 19:52:46,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:52:46,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants.
[2022-01-31 19:52:46,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=3763, Unknown=0, NotChecked=0, Total=3906
[2022-01-31 19:52:46,514 INFO L87 Difference]: Start difference. First operand 215 states and 218 transitions. Second operand has 63 states, 62 states have (on average 1.9516129032258065) internal successors, (121), 61 states have internal predecessors, (121), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18)
[2022-01-31 19:52:50,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:52:50,987 INFO L93 Difference]: Finished difference Result 298 states and 319 transitions.
[2022-01-31 19:52:50,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states.
[2022-01-31 19:52:50,988 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.9516129032258065) internal successors, (121), 61 states have internal predecessors, (121), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 207
[2022-01-31 19:52:50,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:52:50,989 INFO L225 Difference]: With dead ends: 298
[2022-01-31 19:52:50,989 INFO L226 Difference]: Without dead ends: 296
[2022-01-31 19:52:50,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3554 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=465, Invalid=14541, Unknown=0, NotChecked=0, Total=15006
[2022-01-31 19:52:50,990 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 105 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 8074 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 8214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 8074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time
[2022-01-31 19:52:50,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 278 Invalid, 8214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 8074 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time]
[2022-01-31 19:52:50,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states.
[2022-01-31 19:52:51,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 290.
[2022-01-31 19:52:51,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 231 states have (on average 1.0173160173160174) internal successors, (235), 233 states have internal predecessors, (235), 38 states have call successors, (38), 21 states have call predecessors, (38), 20 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37)
[2022-01-31 19:52:51,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 310 transitions.
[2022-01-31 19:52:51,277 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 310 transitions. Word has length 207
[2022-01-31 19:52:51,277 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:52:51,277 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 310 transitions.
[2022-01-31 19:52:51,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.9516129032258065) internal successors, (121), 61 states have internal predecessors, (121), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18)
[2022-01-31 19:52:51,277 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 310 transitions.
[2022-01-31 19:52:51,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211
[2022-01-31 19:52:51,278 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:52:51,278 INFO L514 BasicCegarLoop]: trace histogram [21, 20, 20, 18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:52:51,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87
[2022-01-31 19:52:51,279 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:52:51,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:52:51,279 INFO L85 PathProgramCache]: Analyzing trace with hash 2103317924, now seen corresponding path program 64 times
[2022-01-31 19:52:51,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:52:51,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671706103]
[2022-01-31 19:52:51,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:52:51,281 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:52:51,281 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:52:51,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:52:51,283 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:52:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:52,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:52:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:52,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2022-01-31 19:52:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:52,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78
[2022-01-31 19:52:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:52,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2022-01-31 19:52:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:52,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94
[2022-01-31 19:52:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:52,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102
[2022-01-31 19:52:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:52,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110
[2022-01-31 19:52:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:52,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118
[2022-01-31 19:52:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:52,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126
[2022-01-31 19:52:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:52,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2022-01-31 19:52:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:52,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142
[2022-01-31 19:52:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:52,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150
[2022-01-31 19:52:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:52,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158
[2022-01-31 19:52:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:52,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166
[2022-01-31 19:52:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:52,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174
[2022-01-31 19:52:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:52,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182
[2022-01-31 19:52:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:52,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190
[2022-01-31 19:52:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:52,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198
[2022-01-31 19:52:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:52,819 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 19:52:52,819 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:52:52,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671706103]
[2022-01-31 19:52:52,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [671706103] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:52:52,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:52:52,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64
[2022-01-31 19:52:52,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783702005]
[2022-01-31 19:52:52,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:52:52,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states
[2022-01-31 19:52:52,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:52:52,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants.
[2022-01-31 19:52:52,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=3886, Unknown=0, NotChecked=0, Total=4032
[2022-01-31 19:52:52,820 INFO L87 Difference]: Start difference. First operand 290 states and 310 transitions. Second operand has 64 states, 63 states have (on average 1.9682539682539681) internal successors, (124), 62 states have internal predecessors, (124), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18)
[2022-01-31 19:52:58,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:52:58,388 INFO L93 Difference]: Finished difference Result 380 states and 420 transitions.
[2022-01-31 19:52:58,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states.
[2022-01-31 19:52:58,389 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.9682539682539681) internal successors, (124), 62 states have internal predecessors, (124), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 210
[2022-01-31 19:52:58,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:52:58,390 INFO L225 Difference]: With dead ends: 380
[2022-01-31 19:52:58,390 INFO L226 Difference]: Without dead ends: 378
[2022-01-31 19:52:58,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5284 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=648, Invalid=19944, Unknown=0, NotChecked=0, Total=20592
[2022-01-31 19:52:58,391 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 153 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 8873 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 9076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 8873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:52:58,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 275 Invalid, 9076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 8873 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2022-01-31 19:52:58,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states.
[2022-01-31 19:52:58,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 291.
[2022-01-31 19:52:58,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 232 states have (on average 1.021551724137931) internal successors, (237), 234 states have internal predecessors, (237), 38 states have call successors, (38), 21 states have call predecessors, (38), 20 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37)
[2022-01-31 19:52:58,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 312 transitions.
[2022-01-31 19:52:58,675 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 312 transitions. Word has length 210
[2022-01-31 19:52:58,675 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:52:58,675 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 312 transitions.
[2022-01-31 19:52:58,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.9682539682539681) internal successors, (124), 62 states have internal predecessors, (124), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18)
[2022-01-31 19:52:58,675 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 312 transitions.
[2022-01-31 19:52:58,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213
[2022-01-31 19:52:58,676 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:52:58,676 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:52:58,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88
[2022-01-31 19:52:58,677 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:52:58,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:52:58,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1588643395, now seen corresponding path program 17 times
[2022-01-31 19:52:58,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:52:58,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563488462]
[2022-01-31 19:52:58,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:52:58,678 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:52:58,678 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:52:58,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:52:58,680 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:52:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:58,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:52:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:58,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72
[2022-01-31 19:52:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:58,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80
[2022-01-31 19:52:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:58,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88
[2022-01-31 19:52:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:58,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96
[2022-01-31 19:52:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:58,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104
[2022-01-31 19:52:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:58,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112
[2022-01-31 19:52:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:58,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2022-01-31 19:52:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:58,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128
[2022-01-31 19:52:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:58,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2022-01-31 19:52:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:58,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144
[2022-01-31 19:52:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:58,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152
[2022-01-31 19:52:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:58,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160
[2022-01-31 19:52:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:58,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168
[2022-01-31 19:52:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:58,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176
[2022-01-31 19:52:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:58,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184
[2022-01-31 19:52:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:58,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192
[2022-01-31 19:52:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:58,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200
[2022-01-31 19:52:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:52:58,952 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 19:52:58,952 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:52:58,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563488462]
[2022-01-31 19:52:58,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1563488462] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:52:58,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:52:58,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26
[2022-01-31 19:52:58,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311367643]
[2022-01-31 19:52:58,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:52:58,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-01-31 19:52:58,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:52:58,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-01-31 19:52:58,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650
[2022-01-31 19:52:58,953 INFO L87 Difference]: Start difference. First operand 291 states and 312 transitions. Second operand has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:52:59,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:52:59,925 INFO L93 Difference]: Finished difference Result 590 states and 651 transitions.
[2022-01-31 19:52:59,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2022-01-31 19:52:59,925 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 212
[2022-01-31 19:52:59,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:52:59,926 INFO L225 Difference]: With dead ends: 590
[2022-01-31 19:52:59,926 INFO L226 Difference]: Without dead ends: 445
[2022-01-31 19:52:59,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=879, Invalid=1473, Unknown=0, NotChecked=0, Total=2352
[2022-01-31 19:52:59,927 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 199 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:52:59,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 27 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:52:59,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states.
[2022-01-31 19:53:00,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 293.
[2022-01-31 19:53:00,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 234 states have (on average 1.0213675213675213) internal successors, (239), 236 states have internal predecessors, (239), 38 states have call successors, (38), 21 states have call predecessors, (38), 20 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37)
[2022-01-31 19:53:00,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 314 transitions.
[2022-01-31 19:53:00,205 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 314 transitions. Word has length 212
[2022-01-31 19:53:00,205 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:53:00,205 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 314 transitions.
[2022-01-31 19:53:00,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:53:00,205 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 314 transitions.
[2022-01-31 19:53:00,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214
[2022-01-31 19:53:00,206 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:53:00,206 INFO L514 BasicCegarLoop]: trace histogram [22, 21, 21, 18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:53:00,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89
[2022-01-31 19:53:00,206 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:53:00,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:53:00,206 INFO L85 PathProgramCache]: Analyzing trace with hash -166974200, now seen corresponding path program 65 times
[2022-01-31 19:53:00,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:53:00,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74648506]
[2022-01-31 19:53:00,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:53:00,208 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:53:00,208 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:53:00,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:53:00,209 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:53:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:01,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:53:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:01,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73
[2022-01-31 19:53:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:01,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81
[2022-01-31 19:53:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:01,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2022-01-31 19:53:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:01,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97
[2022-01-31 19:53:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:01,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2022-01-31 19:53:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:01,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113
[2022-01-31 19:53:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:01,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2022-01-31 19:53:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:01,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2022-01-31 19:53:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:01,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137
[2022-01-31 19:53:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:01,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145
[2022-01-31 19:53:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:01,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153
[2022-01-31 19:53:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:01,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161
[2022-01-31 19:53:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:01,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169
[2022-01-31 19:53:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:01,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177
[2022-01-31 19:53:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:01,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185
[2022-01-31 19:53:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:01,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193
[2022-01-31 19:53:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:01,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201
[2022-01-31 19:53:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:01,853 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 19:53:01,853 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:53:01,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74648506]
[2022-01-31 19:53:01,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [74648506] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:53:01,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:53:01,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65
[2022-01-31 19:53:01,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761913767]
[2022-01-31 19:53:01,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:53:01,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states
[2022-01-31 19:53:01,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:53:01,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants.
[2022-01-31 19:53:01,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=4010, Unknown=0, NotChecked=0, Total=4160
[2022-01-31 19:53:01,855 INFO L87 Difference]: Start difference. First operand 293 states and 314 transitions. Second operand has 65 states, 64 states have (on average 1.984375) internal successors, (127), 63 states have internal predecessors, (127), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18)
[2022-01-31 19:53:06,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:53:06,393 INFO L93 Difference]: Finished difference Result 305 states and 326 transitions.
[2022-01-31 19:53:06,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states.
[2022-01-31 19:53:06,393 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.984375) internal successors, (127), 63 states have internal predecessors, (127), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 213
[2022-01-31 19:53:06,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:53:06,394 INFO L225 Difference]: With dead ends: 305
[2022-01-31 19:53:06,394 INFO L226 Difference]: Without dead ends: 303
[2022-01-31 19:53:06,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3612 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=511, Invalid=14989, Unknown=0, NotChecked=0, Total=15500
[2022-01-31 19:53:06,395 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 200 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 8073 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 8308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 8073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time
[2022-01-31 19:53:06,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 278 Invalid, 8308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 8073 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time]
[2022-01-31 19:53:06,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states.
[2022-01-31 19:53:06,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 226.
[2022-01-31 19:53:06,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 184 states have (on average 1.0271739130434783) internal successors, (189), 185 states have internal predecessors, (189), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20)
[2022-01-31 19:53:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 230 transitions.
[2022-01-31 19:53:06,566 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 230 transitions. Word has length 213
[2022-01-31 19:53:06,566 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:53:06,566 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 230 transitions.
[2022-01-31 19:53:06,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 1.984375) internal successors, (127), 63 states have internal predecessors, (127), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18)
[2022-01-31 19:53:06,566 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 230 transitions.
[2022-01-31 19:53:06,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216
[2022-01-31 19:53:06,567 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:53:06,567 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:53:06,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90
[2022-01-31 19:53:06,567 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:53:06,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:53:06,567 INFO L85 PathProgramCache]: Analyzing trace with hash 610561634, now seen corresponding path program 66 times
[2022-01-31 19:53:06,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:53:06,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881857584]
[2022-01-31 19:53:06,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:53:06,569 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:53:06,569 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:53:06,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:53:06,571 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:53:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:07,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:53:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:07,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67
[2022-01-31 19:53:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:07,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75
[2022-01-31 19:53:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:07,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2022-01-31 19:53:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:07,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2022-01-31 19:53:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:07,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2022-01-31 19:53:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:07,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107
[2022-01-31 19:53:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:07,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115
[2022-01-31 19:53:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:07,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123
[2022-01-31 19:53:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:07,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2022-01-31 19:53:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:07,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139
[2022-01-31 19:53:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:07,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147
[2022-01-31 19:53:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:07,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155
[2022-01-31 19:53:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:07,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163
[2022-01-31 19:53:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:07,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171
[2022-01-31 19:53:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:07,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179
[2022-01-31 19:53:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:07,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187
[2022-01-31 19:53:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:07,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195
[2022-01-31 19:53:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:07,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203
[2022-01-31 19:53:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:07,086 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 19:53:07,086 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:53:07,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881857584]
[2022-01-31 19:53:07,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [881857584] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:53:07,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:53:07,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42
[2022-01-31 19:53:07,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180257558]
[2022-01-31 19:53:07,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:53:07,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states
[2022-01-31 19:53:07,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:53:07,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants.
[2022-01-31 19:53:07,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1297, Unknown=0, NotChecked=0, Total=1722
[2022-01-31 19:53:07,088 INFO L87 Difference]: Start difference. First operand 226 states and 230 transitions. Second operand has 42 states, 42 states have (on average 2.9523809523809526) internal successors, (124), 41 states have internal predecessors, (124), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19)
[2022-01-31 19:53:08,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:53:08,282 INFO L93 Difference]: Finished difference Result 310 states and 332 transitions.
[2022-01-31 19:53:08,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2022-01-31 19:53:08,282 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.9523809523809526) internal successors, (124), 41 states have internal predecessors, (124), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 215
[2022-01-31 19:53:08,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:53:08,283 INFO L225 Difference]: With dead ends: 310
[2022-01-31 19:53:08,283 INFO L226 Difference]: Without dead ends: 226
[2022-01-31 19:53:08,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1478 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1305, Invalid=5175, Unknown=0, NotChecked=0, Total=6480
[2022-01-31 19:53:08,284 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 85 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 19:53:08,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 80 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 19:53:08,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states.
[2022-01-31 19:53:08,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226.
[2022-01-31 19:53:08,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 184 states have (on average 1.0217391304347827) internal successors, (188), 185 states have internal predecessors, (188), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20)
[2022-01-31 19:53:08,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 229 transitions.
[2022-01-31 19:53:08,452 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 229 transitions. Word has length 215
[2022-01-31 19:53:08,452 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:53:08,453 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 229 transitions.
[2022-01-31 19:53:08,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.9523809523809526) internal successors, (124), 41 states have internal predecessors, (124), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19)
[2022-01-31 19:53:08,453 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 229 transitions.
[2022-01-31 19:53:08,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219
[2022-01-31 19:53:08,453 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:53:08,453 INFO L514 BasicCegarLoop]: trace histogram [21, 20, 20, 19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:53:08,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91
[2022-01-31 19:53:08,454 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:53:08,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:53:08,454 INFO L85 PathProgramCache]: Analyzing trace with hash -762227330, now seen corresponding path program 67 times
[2022-01-31 19:53:08,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:53:08,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271377828]
[2022-01-31 19:53:08,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:53:08,455 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:53:08,455 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:53:08,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:53:08,457 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:53:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:10,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:53:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:10,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2022-01-31 19:53:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:10,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78
[2022-01-31 19:53:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:10,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2022-01-31 19:53:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:10,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94
[2022-01-31 19:53:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:10,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102
[2022-01-31 19:53:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:10,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110
[2022-01-31 19:53:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:10,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118
[2022-01-31 19:53:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:10,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126
[2022-01-31 19:53:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:10,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2022-01-31 19:53:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:10,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142
[2022-01-31 19:53:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:10,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150
[2022-01-31 19:53:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:10,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158
[2022-01-31 19:53:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:10,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166
[2022-01-31 19:53:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:10,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174
[2022-01-31 19:53:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:10,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182
[2022-01-31 19:53:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:10,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190
[2022-01-31 19:53:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:10,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198
[2022-01-31 19:53:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:10,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206
[2022-01-31 19:53:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:10,107 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 19:53:10,107 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:53:10,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271377828]
[2022-01-31 19:53:10,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1271377828] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:53:10,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:53:10,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66
[2022-01-31 19:53:10,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347401673]
[2022-01-31 19:53:10,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:53:10,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states
[2022-01-31 19:53:10,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:53:10,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants.
[2022-01-31 19:53:10,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=4140, Unknown=0, NotChecked=0, Total=4290
[2022-01-31 19:53:10,109 INFO L87 Difference]: Start difference. First operand 226 states and 229 transitions. Second operand has 66 states, 65 states have (on average 1.9538461538461538) internal successors, (127), 64 states have internal predecessors, (127), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19)
[2022-01-31 19:53:15,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:53:15,053 INFO L93 Difference]: Finished difference Result 313 states and 335 transitions.
[2022-01-31 19:53:15,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states.
[2022-01-31 19:53:15,054 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.9538461538461538) internal successors, (127), 64 states have internal predecessors, (127), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 218
[2022-01-31 19:53:15,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:53:15,055 INFO L225 Difference]: With dead ends: 313
[2022-01-31 19:53:15,055 INFO L226 Difference]: Without dead ends: 311
[2022-01-31 19:53:15,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3931 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=488, Invalid=16024, Unknown=0, NotChecked=0, Total=16512
[2022-01-31 19:53:15,056 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 109 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 8904 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 9051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 8904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time
[2022-01-31 19:53:15,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 293 Invalid, 9051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 8904 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time]
[2022-01-31 19:53:15,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states.
[2022-01-31 19:53:15,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 305.
[2022-01-31 19:53:15,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 243 states have (on average 1.0164609053497942) internal successors, (247), 245 states have internal predecessors, (247), 40 states have call successors, (40), 22 states have call predecessors, (40), 21 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39)
[2022-01-31 19:53:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 326 transitions.
[2022-01-31 19:53:15,370 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 326 transitions. Word has length 218
[2022-01-31 19:53:15,370 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:53:15,370 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 326 transitions.
[2022-01-31 19:53:15,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.9538461538461538) internal successors, (127), 64 states have internal predecessors, (127), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19)
[2022-01-31 19:53:15,370 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 326 transitions.
[2022-01-31 19:53:15,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222
[2022-01-31 19:53:15,371 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:53:15,371 INFO L514 BasicCegarLoop]: trace histogram [22, 21, 21, 19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:53:15,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92
[2022-01-31 19:53:15,372 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:53:15,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:53:15,372 INFO L85 PathProgramCache]: Analyzing trace with hash -839661342, now seen corresponding path program 68 times
[2022-01-31 19:53:15,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:53:15,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408511303]
[2022-01-31 19:53:15,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:53:15,374 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:53:15,374 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:53:15,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:53:15,376 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:53:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:17,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:53:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:17,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73
[2022-01-31 19:53:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:17,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81
[2022-01-31 19:53:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:17,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2022-01-31 19:53:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:17,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97
[2022-01-31 19:53:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:17,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2022-01-31 19:53:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:17,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113
[2022-01-31 19:53:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:17,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2022-01-31 19:53:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:17,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2022-01-31 19:53:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:17,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137
[2022-01-31 19:53:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:17,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145
[2022-01-31 19:53:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:17,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153
[2022-01-31 19:53:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:17,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161
[2022-01-31 19:53:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:17,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169
[2022-01-31 19:53:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:17,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177
[2022-01-31 19:53:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:17,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185
[2022-01-31 19:53:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:17,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193
[2022-01-31 19:53:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:17,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201
[2022-01-31 19:53:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:17,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209
[2022-01-31 19:53:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:17,031 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 19:53:17,031 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:53:17,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408511303]
[2022-01-31 19:53:17,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1408511303] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:53:17,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:53:17,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67
[2022-01-31 19:53:17,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754945477]
[2022-01-31 19:53:17,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:53:17,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states
[2022-01-31 19:53:17,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:53:17,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants.
[2022-01-31 19:53:17,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=4269, Unknown=0, NotChecked=0, Total=4422
[2022-01-31 19:53:17,032 INFO L87 Difference]: Start difference. First operand 305 states and 326 transitions. Second operand has 67 states, 66 states have (on average 1.9696969696969697) internal successors, (130), 65 states have internal predecessors, (130), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19)
[2022-01-31 19:53:23,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:53:23,377 INFO L93 Difference]: Finished difference Result 399 states and 441 transitions.
[2022-01-31 19:53:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states.
[2022-01-31 19:53:23,377 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 1.9696969696969697) internal successors, (130), 65 states have internal predecessors, (130), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 221
[2022-01-31 19:53:23,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:53:23,379 INFO L225 Difference]: With dead ends: 399
[2022-01-31 19:53:23,379 INFO L226 Difference]: Without dead ends: 397
[2022-01-31 19:53:23,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5842 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=680, Invalid=21970, Unknown=0, NotChecked=0, Total=22650
[2022-01-31 19:53:23,380 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 159 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 10459 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 10672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 10459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2022-01-31 19:53:23,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 303 Invalid, 10672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 10459 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2022-01-31 19:53:23,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states.
[2022-01-31 19:53:23,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 306.
[2022-01-31 19:53:23,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 244 states have (on average 1.0204918032786885) internal successors, (249), 246 states have internal predecessors, (249), 40 states have call successors, (40), 22 states have call predecessors, (40), 21 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39)
[2022-01-31 19:53:23,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 328 transitions.
[2022-01-31 19:53:23,691 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 328 transitions. Word has length 221
[2022-01-31 19:53:23,691 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:53:23,691 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 328 transitions.
[2022-01-31 19:53:23,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 1.9696969696969697) internal successors, (130), 65 states have internal predecessors, (130), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19)
[2022-01-31 19:53:23,691 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 328 transitions.
[2022-01-31 19:53:23,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224
[2022-01-31 19:53:23,692 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:53:23,692 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:53:23,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93
[2022-01-31 19:53:23,692 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:53:23,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:53:23,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1012955899, now seen corresponding path program 18 times
[2022-01-31 19:53:23,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:53:23,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930481760]
[2022-01-31 19:53:23,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:53:23,694 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:53:23,694 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:53:23,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:53:23,695 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:53:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:23,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:53:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:23,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75
[2022-01-31 19:53:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:23,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2022-01-31 19:53:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:23,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2022-01-31 19:53:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:23,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2022-01-31 19:53:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:23,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107
[2022-01-31 19:53:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:23,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115
[2022-01-31 19:53:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:23,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123
[2022-01-31 19:53:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:23,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2022-01-31 19:53:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:23,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139
[2022-01-31 19:53:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:23,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147
[2022-01-31 19:53:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:24,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155
[2022-01-31 19:53:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:24,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163
[2022-01-31 19:53:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:24,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171
[2022-01-31 19:53:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:24,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179
[2022-01-31 19:53:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:24,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187
[2022-01-31 19:53:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:24,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195
[2022-01-31 19:53:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:24,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203
[2022-01-31 19:53:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:24,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211
[2022-01-31 19:53:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:24,013 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 19:53:24,013 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:53:24,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930481760]
[2022-01-31 19:53:24,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1930481760] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:53:24,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:53:24,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27
[2022-01-31 19:53:24,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939836653]
[2022-01-31 19:53:24,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:53:24,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2022-01-31 19:53:24,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:53:24,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2022-01-31 19:53:24,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=397, Unknown=0, NotChecked=0, Total=702
[2022-01-31 19:53:24,014 INFO L87 Difference]: Start difference. First operand 306 states and 328 transitions. Second operand has 27 states, 27 states have (on average 2.962962962962963) internal successors, (80), 26 states have internal predecessors, (80), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:53:25,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:53:25,107 INFO L93 Difference]: Finished difference Result 621 states and 685 transitions.
[2022-01-31 19:53:25,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2022-01-31 19:53:25,108 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.962962962962963) internal successors, (80), 26 states have internal predecessors, (80), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 223
[2022-01-31 19:53:25,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:53:25,109 INFO L225 Difference]: With dead ends: 621
[2022-01-31 19:53:25,110 INFO L226 Difference]: Without dead ends: 468
[2022-01-31 19:53:25,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=953, Invalid=1597, Unknown=0, NotChecked=0, Total=2550
[2022-01-31 19:53:25,110 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 224 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:53:25,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 23 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:53:25,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states.
[2022-01-31 19:53:25,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 308.
[2022-01-31 19:53:25,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 246 states have (on average 1.0203252032520325) internal successors, (251), 248 states have internal predecessors, (251), 40 states have call successors, (40), 22 states have call predecessors, (40), 21 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39)
[2022-01-31 19:53:25,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 330 transitions.
[2022-01-31 19:53:25,422 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 330 transitions. Word has length 223
[2022-01-31 19:53:25,422 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:53:25,422 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 330 transitions.
[2022-01-31 19:53:25,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.962962962962963) internal successors, (80), 26 states have internal predecessors, (80), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:53:25,422 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 330 transitions.
[2022-01-31 19:53:25,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225
[2022-01-31 19:53:25,423 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:53:25,423 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:53:25,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94
[2022-01-31 19:53:25,423 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:53:25,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:53:25,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1278874882, now seen corresponding path program 69 times
[2022-01-31 19:53:25,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:53:25,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372880719]
[2022-01-31 19:53:25,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:53:25,425 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:53:25,425 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:53:25,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:53:25,427 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:53:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:27,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:53:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:27,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76
[2022-01-31 19:53:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:27,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84
[2022-01-31 19:53:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:27,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2022-01-31 19:53:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:27,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2022-01-31 19:53:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:27,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108
[2022-01-31 19:53:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:27,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2022-01-31 19:53:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:27,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2022-01-31 19:53:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:27,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132
[2022-01-31 19:53:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:27,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2022-01-31 19:53:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:27,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148
[2022-01-31 19:53:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:27,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156
[2022-01-31 19:53:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:27,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164
[2022-01-31 19:53:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:27,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172
[2022-01-31 19:53:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:27,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180
[2022-01-31 19:53:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:27,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188
[2022-01-31 19:53:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:27,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196
[2022-01-31 19:53:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:27,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204
[2022-01-31 19:53:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:27,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212
[2022-01-31 19:53:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:27,200 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 19:53:27,201 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:53:27,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372880719]
[2022-01-31 19:53:27,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1372880719] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:53:27,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:53:27,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68
[2022-01-31 19:53:27,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947807291]
[2022-01-31 19:53:27,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:53:27,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states
[2022-01-31 19:53:27,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:53:27,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants.
[2022-01-31 19:53:27,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=4399, Unknown=0, NotChecked=0, Total=4556
[2022-01-31 19:53:27,202 INFO L87 Difference]: Start difference. First operand 308 states and 330 transitions. Second operand has 68 states, 67 states have (on average 1.9850746268656716) internal successors, (133), 66 states have internal predecessors, (133), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19)
[2022-01-31 19:53:32,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:53:32,429 INFO L93 Difference]: Finished difference Result 320 states and 342 transitions.
[2022-01-31 19:53:32,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states.
[2022-01-31 19:53:32,430 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 1.9850746268656716) internal successors, (133), 66 states have internal predecessors, (133), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 224
[2022-01-31 19:53:32,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:53:32,431 INFO L225 Difference]: With dead ends: 320
[2022-01-31 19:53:32,431 INFO L226 Difference]: Without dead ends: 318
[2022-01-31 19:53:32,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3992 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=536, Invalid=16494, Unknown=0, NotChecked=0, Total=17030
[2022-01-31 19:53:32,432 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 122 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 9579 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 9748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 9579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time
[2022-01-31 19:53:32,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 316 Invalid, 9748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 9579 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time]
[2022-01-31 19:53:32,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states.
[2022-01-31 19:53:32,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 237.
[2022-01-31 19:53:32,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 193 states have (on average 1.0259067357512954) internal successors, (198), 194 states have internal predecessors, (198), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21)
[2022-01-31 19:53:32,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 241 transitions.
[2022-01-31 19:53:32,616 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 241 transitions. Word has length 224
[2022-01-31 19:53:32,616 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:53:32,616 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 241 transitions.
[2022-01-31 19:53:32,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 1.9850746268656716) internal successors, (133), 66 states have internal predecessors, (133), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19)
[2022-01-31 19:53:32,616 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 241 transitions.
[2022-01-31 19:53:32,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227
[2022-01-31 19:53:32,617 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:53:32,617 INFO L514 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:53:32,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95
[2022-01-31 19:53:32,617 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:53:32,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:53:32,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1583094616, now seen corresponding path program 70 times
[2022-01-31 19:53:32,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:53:32,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955904118]
[2022-01-31 19:53:32,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:53:32,619 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:53:32,619 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:53:32,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:53:32,621 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:53:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:33,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:53:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:33,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2022-01-31 19:53:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:33,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78
[2022-01-31 19:53:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:33,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2022-01-31 19:53:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:33,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94
[2022-01-31 19:53:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:33,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102
[2022-01-31 19:53:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:33,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110
[2022-01-31 19:53:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:33,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118
[2022-01-31 19:53:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:33,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126
[2022-01-31 19:53:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:33,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2022-01-31 19:53:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:33,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142
[2022-01-31 19:53:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:33,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150
[2022-01-31 19:53:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:33,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158
[2022-01-31 19:53:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:33,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166
[2022-01-31 19:53:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:33,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174
[2022-01-31 19:53:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:33,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182
[2022-01-31 19:53:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:33,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190
[2022-01-31 19:53:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:33,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198
[2022-01-31 19:53:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:33,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206
[2022-01-31 19:53:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:33,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214
[2022-01-31 19:53:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:33,167 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 19:53:33,167 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:53:33,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955904118]
[2022-01-31 19:53:33,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1955904118] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:53:33,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:53:33,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44
[2022-01-31 19:53:33,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121336858]
[2022-01-31 19:53:33,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:53:33,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states
[2022-01-31 19:53:33,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:53:33,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants.
[2022-01-31 19:53:33,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892
[2022-01-31 19:53:33,168 INFO L87 Difference]: Start difference. First operand 237 states and 241 transitions. Second operand has 44 states, 44 states have (on average 2.9545454545454546) internal successors, (130), 43 states have internal predecessors, (130), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2022-01-31 19:53:34,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:53:34,494 INFO L93 Difference]: Finished difference Result 325 states and 348 transitions.
[2022-01-31 19:53:34,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2022-01-31 19:53:34,494 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.9545454545454546) internal successors, (130), 43 states have internal predecessors, (130), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 226
[2022-01-31 19:53:34,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:53:34,495 INFO L225 Difference]: With dead ends: 325
[2022-01-31 19:53:34,495 INFO L226 Difference]: Without dead ends: 237
[2022-01-31 19:53:34,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1636 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1433, Invalid=5707, Unknown=0, NotChecked=0, Total=7140
[2022-01-31 19:53:34,496 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 88 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 19:53:34,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 92 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 19:53:34,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states.
[2022-01-31 19:53:34,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237.
[2022-01-31 19:53:34,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 193 states have (on average 1.0207253886010363) internal successors, (197), 194 states have internal predecessors, (197), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21)
[2022-01-31 19:53:34,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 240 transitions.
[2022-01-31 19:53:34,678 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 240 transitions. Word has length 226
[2022-01-31 19:53:34,678 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:53:34,678 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 240 transitions.
[2022-01-31 19:53:34,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.9545454545454546) internal successors, (130), 43 states have internal predecessors, (130), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2022-01-31 19:53:34,678 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 240 transitions.
[2022-01-31 19:53:34,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230
[2022-01-31 19:53:34,679 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:53:34,679 INFO L514 BasicCegarLoop]: trace histogram [22, 21, 21, 20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:53:34,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96
[2022-01-31 19:53:34,679 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:53:34,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:53:34,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2141787460, now seen corresponding path program 71 times
[2022-01-31 19:53:34,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:53:34,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610714919]
[2022-01-31 19:53:34,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:53:34,681 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:53:34,681 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:53:34,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:53:34,683 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:53:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:36,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:53:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:36,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73
[2022-01-31 19:53:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:36,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81
[2022-01-31 19:53:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:36,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2022-01-31 19:53:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:36,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97
[2022-01-31 19:53:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:36,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2022-01-31 19:53:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:36,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113
[2022-01-31 19:53:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:36,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2022-01-31 19:53:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:36,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2022-01-31 19:53:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:36,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137
[2022-01-31 19:53:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:36,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145
[2022-01-31 19:53:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:36,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153
[2022-01-31 19:53:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:36,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161
[2022-01-31 19:53:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:36,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169
[2022-01-31 19:53:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:36,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177
[2022-01-31 19:53:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:36,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185
[2022-01-31 19:53:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:36,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193
[2022-01-31 19:53:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:36,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201
[2022-01-31 19:53:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:36,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209
[2022-01-31 19:53:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:36,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217
[2022-01-31 19:53:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:36,422 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 19:53:36,422 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:53:36,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610714919]
[2022-01-31 19:53:36,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1610714919] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:53:36,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:53:36,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69
[2022-01-31 19:53:36,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760778412]
[2022-01-31 19:53:36,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:53:36,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states
[2022-01-31 19:53:36,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:53:36,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants.
[2022-01-31 19:53:36,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=4535, Unknown=0, NotChecked=0, Total=4692
[2022-01-31 19:53:36,423 INFO L87 Difference]: Start difference. First operand 237 states and 240 transitions. Second operand has 69 states, 68 states have (on average 1.9558823529411764) internal successors, (133), 67 states have internal predecessors, (133), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2022-01-31 19:53:42,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:53:42,221 INFO L93 Difference]: Finished difference Result 328 states and 351 transitions.
[2022-01-31 19:53:42,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states.
[2022-01-31 19:53:42,221 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 1.9558823529411764) internal successors, (133), 67 states have internal predecessors, (133), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 229
[2022-01-31 19:53:42,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:53:42,222 INFO L225 Difference]: With dead ends: 328
[2022-01-31 19:53:42,222 INFO L226 Difference]: Without dead ends: 326
[2022-01-31 19:53:42,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4327 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=511, Invalid=17579, Unknown=0, NotChecked=0, Total=18090
[2022-01-31 19:53:42,223 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 113 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 11008 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 11162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 11008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time
[2022-01-31 19:53:42,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 343 Invalid, 11162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 11008 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time]
[2022-01-31 19:53:42,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states.
[2022-01-31 19:53:42,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 320.
[2022-01-31 19:53:42,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 255 states have (on average 1.0156862745098039) internal successors, (259), 257 states have internal predecessors, (259), 42 states have call successors, (42), 23 states have call predecessors, (42), 22 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41)
[2022-01-31 19:53:42,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 342 transitions.
[2022-01-31 19:53:42,554 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 342 transitions. Word has length 229
[2022-01-31 19:53:42,554 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:53:42,554 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 342 transitions.
[2022-01-31 19:53:42,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 1.9558823529411764) internal successors, (133), 67 states have internal predecessors, (133), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2022-01-31 19:53:42,554 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 342 transitions.
[2022-01-31 19:53:42,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233
[2022-01-31 19:53:42,556 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:53:42,556 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:53:42,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97
[2022-01-31 19:53:42,556 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:53:42,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:53:42,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1033686824, now seen corresponding path program 72 times
[2022-01-31 19:53:42,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:53:42,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479253773]
[2022-01-31 19:53:42,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:53:42,558 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:53:42,558 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:53:42,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:53:42,560 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:53:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:44,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:53:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:44,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76
[2022-01-31 19:53:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:44,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84
[2022-01-31 19:53:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:44,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2022-01-31 19:53:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:44,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2022-01-31 19:53:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:44,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108
[2022-01-31 19:53:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:44,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2022-01-31 19:53:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:44,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2022-01-31 19:53:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:44,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132
[2022-01-31 19:53:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:44,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2022-01-31 19:53:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:44,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148
[2022-01-31 19:53:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:44,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156
[2022-01-31 19:53:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:44,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164
[2022-01-31 19:53:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:44,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172
[2022-01-31 19:53:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:44,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180
[2022-01-31 19:53:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:44,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188
[2022-01-31 19:53:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:44,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196
[2022-01-31 19:53:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:44,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204
[2022-01-31 19:53:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:44,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212
[2022-01-31 19:53:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:44,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220
[2022-01-31 19:53:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:44,406 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 19:53:44,407 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:53:44,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479253773]
[2022-01-31 19:53:44,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1479253773] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:53:44,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:53:44,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70
[2022-01-31 19:53:44,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915849844]
[2022-01-31 19:53:44,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:53:44,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states
[2022-01-31 19:53:44,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:53:44,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants.
[2022-01-31 19:53:44,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=4670, Unknown=0, NotChecked=0, Total=4830
[2022-01-31 19:53:44,408 INFO L87 Difference]: Start difference. First operand 320 states and 342 transitions. Second operand has 70 states, 69 states have (on average 1.9710144927536233) internal successors, (136), 68 states have internal predecessors, (136), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2022-01-31 19:53:51,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:53:51,314 INFO L93 Difference]: Finished difference Result 418 states and 462 transitions.
[2022-01-31 19:53:51,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states.
[2022-01-31 19:53:51,315 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 1.9710144927536233) internal successors, (136), 68 states have internal predecessors, (136), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 232
[2022-01-31 19:53:51,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:53:51,316 INFO L225 Difference]: With dead ends: 418
[2022-01-31 19:53:51,316 INFO L226 Difference]: Without dead ends: 416
[2022-01-31 19:53:51,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6428 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=712, Invalid=24094, Unknown=0, NotChecked=0, Total=24806
[2022-01-31 19:53:51,317 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 164 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 11450 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 11672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 11450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time
[2022-01-31 19:53:51,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 318 Invalid, 11672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 11450 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time]
[2022-01-31 19:53:51,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states.
[2022-01-31 19:53:51,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 321.
[2022-01-31 19:53:51,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 256 states have (on average 1.01953125) internal successors, (261), 258 states have internal predecessors, (261), 42 states have call successors, (42), 23 states have call predecessors, (42), 22 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41)
[2022-01-31 19:53:51,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 344 transitions.
[2022-01-31 19:53:51,653 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 344 transitions. Word has length 232
[2022-01-31 19:53:51,653 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:53:51,653 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 344 transitions.
[2022-01-31 19:53:51,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 1.9710144927536233) internal successors, (136), 68 states have internal predecessors, (136), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2022-01-31 19:53:51,653 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 344 transitions.
[2022-01-31 19:53:51,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235
[2022-01-31 19:53:51,654 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:53:51,655 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:53:51,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98
[2022-01-31 19:53:51,655 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:53:51,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:53:51,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1028414735, now seen corresponding path program 19 times
[2022-01-31 19:53:51,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:53:51,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214117318]
[2022-01-31 19:53:51,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:53:51,657 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:53:51,657 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:53:51,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:53:51,659 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:53:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:51,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:53:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:52,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78
[2022-01-31 19:53:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:52,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2022-01-31 19:53:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:52,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94
[2022-01-31 19:53:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:52,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102
[2022-01-31 19:53:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:52,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110
[2022-01-31 19:53:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:52,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118
[2022-01-31 19:53:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:52,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126
[2022-01-31 19:53:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:52,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2022-01-31 19:53:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:52,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142
[2022-01-31 19:53:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:52,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150
[2022-01-31 19:53:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:52,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158
[2022-01-31 19:53:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:52,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166
[2022-01-31 19:53:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:52,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174
[2022-01-31 19:53:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:52,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182
[2022-01-31 19:53:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:52,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190
[2022-01-31 19:53:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:52,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198
[2022-01-31 19:53:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:52,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206
[2022-01-31 19:53:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:52,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214
[2022-01-31 19:53:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:52,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222
[2022-01-31 19:53:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:52,024 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 19:53:52,024 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:53:52,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214117318]
[2022-01-31 19:53:52,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1214117318] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:53:52,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:53:52,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28
[2022-01-31 19:53:52,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644635764]
[2022-01-31 19:53:52,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:53:52,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-01-31 19:53:52,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:53:52,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-01-31 19:53:52,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=426, Unknown=0, NotChecked=0, Total=756
[2022-01-31 19:53:52,026 INFO L87 Difference]: Start difference. First operand 321 states and 344 transitions. Second operand has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 27 states have internal predecessors, (83), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:53:53,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:53:53,185 INFO L93 Difference]: Finished difference Result 652 states and 719 transitions.
[2022-01-31 19:53:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2022-01-31 19:53:53,185 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 27 states have internal predecessors, (83), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 234
[2022-01-31 19:53:53,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:53:53,187 INFO L225 Difference]: With dead ends: 652
[2022-01-31 19:53:53,187 INFO L226 Difference]: Without dead ends: 491
[2022-01-31 19:53:53,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1030, Invalid=1726, Unknown=0, NotChecked=0, Total=2756
[2022-01-31 19:53:53,188 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 229 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:53:53,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 21 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:53:53,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states.
[2022-01-31 19:53:53,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 323.
[2022-01-31 19:53:53,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 258 states have (on average 1.0193798449612403) internal successors, (263), 260 states have internal predecessors, (263), 42 states have call successors, (42), 23 states have call predecessors, (42), 22 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41)
[2022-01-31 19:53:53,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 346 transitions.
[2022-01-31 19:53:53,534 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 346 transitions. Word has length 234
[2022-01-31 19:53:53,534 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:53:53,534 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 346 transitions.
[2022-01-31 19:53:53,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 27 states have internal predecessors, (83), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:53:53,534 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 346 transitions.
[2022-01-31 19:53:53,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236
[2022-01-31 19:53:53,535 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:53:53,535 INFO L514 BasicCegarLoop]: trace histogram [24, 23, 23, 20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:53:53,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99
[2022-01-31 19:53:53,535 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:53:53,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:53:53,535 INFO L85 PathProgramCache]: Analyzing trace with hash -726276804, now seen corresponding path program 73 times
[2022-01-31 19:53:53,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:53:53,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589387418]
[2022-01-31 19:53:53,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:53:53,537 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:53:53,537 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:53:53,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:53:53,539 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:53:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:55,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:53:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:55,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2022-01-31 19:53:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:55,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2022-01-31 19:53:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:55,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95
[2022-01-31 19:53:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:55,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103
[2022-01-31 19:53:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:55,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2022-01-31 19:53:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:55,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119
[2022-01-31 19:53:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:55,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127
[2022-01-31 19:53:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:55,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2022-01-31 19:53:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:55,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143
[2022-01-31 19:53:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:55,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151
[2022-01-31 19:53:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:55,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2022-01-31 19:53:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:55,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167
[2022-01-31 19:53:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:55,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175
[2022-01-31 19:53:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:55,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183
[2022-01-31 19:53:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:55,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191
[2022-01-31 19:53:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:55,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199
[2022-01-31 19:53:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:55,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207
[2022-01-31 19:53:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:55,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215
[2022-01-31 19:53:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:55,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223
[2022-01-31 19:53:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:53:55,441 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 19:53:55,441 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:53:55,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589387418]
[2022-01-31 19:53:55,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1589387418] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:53:55,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:53:55,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71
[2022-01-31 19:53:55,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256170882]
[2022-01-31 19:53:55,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:53:55,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states
[2022-01-31 19:53:55,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:53:55,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants.
[2022-01-31 19:53:55,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=4806, Unknown=0, NotChecked=0, Total=4970
[2022-01-31 19:53:55,442 INFO L87 Difference]: Start difference. First operand 323 states and 346 transitions. Second operand has 71 states, 70 states have (on average 1.9857142857142858) internal successors, (139), 69 states have internal predecessors, (139), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2022-01-31 19:54:00,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:54:00,822 INFO L93 Difference]: Finished difference Result 335 states and 358 transitions.
[2022-01-31 19:54:00,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states.
[2022-01-31 19:54:00,822 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 1.9857142857142858) internal successors, (139), 69 states have internal predecessors, (139), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 235
[2022-01-31 19:54:00,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:54:00,824 INFO L225 Difference]: With dead ends: 335
[2022-01-31 19:54:00,824 INFO L226 Difference]: Without dead ends: 333
[2022-01-31 19:54:00,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4391 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=561, Invalid=18071, Unknown=0, NotChecked=0, Total=18632
[2022-01-31 19:54:00,825 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 173 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 9500 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 9718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 9500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time
[2022-01-31 19:54:00,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 299 Invalid, 9718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 9500 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time]
[2022-01-31 19:54:00,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states.
[2022-01-31 19:54:01,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 248.
[2022-01-31 19:54:01,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 202 states have (on average 1.0247524752475248) internal successors, (207), 203 states have internal predecessors, (207), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22)
[2022-01-31 19:54:01,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 252 transitions.
[2022-01-31 19:54:01,037 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 252 transitions. Word has length 235
[2022-01-31 19:54:01,037 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:54:01,037 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 252 transitions.
[2022-01-31 19:54:01,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 1.9857142857142858) internal successors, (139), 69 states have internal predecessors, (139), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2022-01-31 19:54:01,037 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 252 transitions.
[2022-01-31 19:54:01,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238
[2022-01-31 19:54:01,038 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:54:01,038 INFO L514 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:54:01,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100
[2022-01-31 19:54:01,038 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:54:01,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:54:01,038 INFO L85 PathProgramCache]: Analyzing trace with hash 877630102, now seen corresponding path program 74 times
[2022-01-31 19:54:01,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:54:01,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087816410]
[2022-01-31 19:54:01,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:54:01,040 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:54:01,040 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:54:01,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:54:01,041 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:54:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:54:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73
[2022-01-31 19:54:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81
[2022-01-31 19:54:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2022-01-31 19:54:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97
[2022-01-31 19:54:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2022-01-31 19:54:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113
[2022-01-31 19:54:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2022-01-31 19:54:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2022-01-31 19:54:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137
[2022-01-31 19:54:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145
[2022-01-31 19:54:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153
[2022-01-31 19:54:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161
[2022-01-31 19:54:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169
[2022-01-31 19:54:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177
[2022-01-31 19:54:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185
[2022-01-31 19:54:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193
[2022-01-31 19:54:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201
[2022-01-31 19:54:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209
[2022-01-31 19:54:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217
[2022-01-31 19:54:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225
[2022-01-31 19:54:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:01,640 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 19:54:01,640 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:54:01,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087816410]
[2022-01-31 19:54:01,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1087816410] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:54:01,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:54:01,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46
[2022-01-31 19:54:01,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991929711]
[2022-01-31 19:54:01,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:54:01,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states
[2022-01-31 19:54:01,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:54:01,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants.
[2022-01-31 19:54:01,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=511, Invalid=1559, Unknown=0, NotChecked=0, Total=2070
[2022-01-31 19:54:01,642 INFO L87 Difference]: Start difference. First operand 248 states and 252 transitions. Second operand has 46 states, 46 states have (on average 2.9565217391304346) internal successors, (136), 45 states have internal predecessors, (136), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21)
[2022-01-31 19:54:03,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:54:03,212 INFO L93 Difference]: Finished difference Result 340 states and 364 transitions.
[2022-01-31 19:54:03,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2022-01-31 19:54:03,212 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.9565217391304346) internal successors, (136), 45 states have internal predecessors, (136), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 237
[2022-01-31 19:54:03,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:54:03,213 INFO L225 Difference]: With dead ends: 340
[2022-01-31 19:54:03,213 INFO L226 Difference]: Without dead ends: 248
[2022-01-31 19:54:03,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1567, Invalid=6265, Unknown=0, NotChecked=0, Total=7832
[2022-01-31 19:54:03,214 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 91 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 19:54:03,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 94 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 19:54:03,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states.
[2022-01-31 19:54:03,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248.
[2022-01-31 19:54:03,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 202 states have (on average 1.0198019801980198) internal successors, (206), 203 states have internal predecessors, (206), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22)
[2022-01-31 19:54:03,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 251 transitions.
[2022-01-31 19:54:03,450 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 251 transitions. Word has length 237
[2022-01-31 19:54:03,450 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:54:03,450 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 251 transitions.
[2022-01-31 19:54:03,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.9565217391304346) internal successors, (136), 45 states have internal predecessors, (136), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21)
[2022-01-31 19:54:03,450 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 251 transitions.
[2022-01-31 19:54:03,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241
[2022-01-31 19:54:03,451 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:54:03,451 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:54:03,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101
[2022-01-31 19:54:03,451 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:54:03,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:54:03,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1741554510, now seen corresponding path program 75 times
[2022-01-31 19:54:03,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:54:03,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393968630]
[2022-01-31 19:54:03,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:54:03,453 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:54:03,453 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:54:03,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:54:03,456 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:54:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:54:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76
[2022-01-31 19:54:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84
[2022-01-31 19:54:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2022-01-31 19:54:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2022-01-31 19:54:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108
[2022-01-31 19:54:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2022-01-31 19:54:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2022-01-31 19:54:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132
[2022-01-31 19:54:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2022-01-31 19:54:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148
[2022-01-31 19:54:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156
[2022-01-31 19:54:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164
[2022-01-31 19:54:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172
[2022-01-31 19:54:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180
[2022-01-31 19:54:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188
[2022-01-31 19:54:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196
[2022-01-31 19:54:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204
[2022-01-31 19:54:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212
[2022-01-31 19:54:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220
[2022-01-31 19:54:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228
[2022-01-31 19:54:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:05,391 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 19:54:05,391 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:54:05,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393968630]
[2022-01-31 19:54:05,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1393968630] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:54:05,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:54:05,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72
[2022-01-31 19:54:05,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927263906]
[2022-01-31 19:54:05,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:54:05,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states
[2022-01-31 19:54:05,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:54:05,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants.
[2022-01-31 19:54:05,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=4948, Unknown=0, NotChecked=0, Total=5112
[2022-01-31 19:54:05,393 INFO L87 Difference]: Start difference. First operand 248 states and 251 transitions. Second operand has 72 states, 71 states have (on average 1.9577464788732395) internal successors, (139), 70 states have internal predecessors, (139), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21)
[2022-01-31 19:54:11,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:54:11,325 INFO L93 Difference]: Finished difference Result 343 states and 367 transitions.
[2022-01-31 19:54:11,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states.
[2022-01-31 19:54:11,327 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.9577464788732395) internal successors, (139), 70 states have internal predecessors, (139), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 240
[2022-01-31 19:54:11,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:54:11,329 INFO L225 Difference]: With dead ends: 343
[2022-01-31 19:54:11,329 INFO L226 Difference]: Without dead ends: 341
[2022-01-31 19:54:11,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4742 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=534, Invalid=19206, Unknown=0, NotChecked=0, Total=19740
[2022-01-31 19:54:11,330 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 117 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 10574 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 10735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 10574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2022-01-31 19:54:11,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 316 Invalid, 10735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 10574 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2022-01-31 19:54:11,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states.
[2022-01-31 19:54:11,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 335.
[2022-01-31 19:54:11,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 267 states have (on average 1.0149812734082397) internal successors, (271), 269 states have internal predecessors, (271), 44 states have call successors, (44), 24 states have call predecessors, (44), 23 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43)
[2022-01-31 19:54:11,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 358 transitions.
[2022-01-31 19:54:11,708 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 358 transitions. Word has length 240
[2022-01-31 19:54:11,708 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:54:11,708 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 358 transitions.
[2022-01-31 19:54:11,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.9577464788732395) internal successors, (139), 70 states have internal predecessors, (139), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21)
[2022-01-31 19:54:11,709 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 358 transitions.
[2022-01-31 19:54:11,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244
[2022-01-31 19:54:11,710 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:54:11,710 INFO L514 BasicCegarLoop]: trace histogram [24, 23, 23, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:54:11,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102
[2022-01-31 19:54:11,710 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:54:11,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:54:11,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1095503126, now seen corresponding path program 76 times
[2022-01-31 19:54:11,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:54:11,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553927744]
[2022-01-31 19:54:11,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:54:11,712 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:54:11,712 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:54:11,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:54:11,714 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:54:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:54:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2022-01-31 19:54:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2022-01-31 19:54:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95
[2022-01-31 19:54:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103
[2022-01-31 19:54:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2022-01-31 19:54:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119
[2022-01-31 19:54:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127
[2022-01-31 19:54:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2022-01-31 19:54:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143
[2022-01-31 19:54:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151
[2022-01-31 19:54:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2022-01-31 19:54:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167
[2022-01-31 19:54:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175
[2022-01-31 19:54:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183
[2022-01-31 19:54:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191
[2022-01-31 19:54:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199
[2022-01-31 19:54:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207
[2022-01-31 19:54:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215
[2022-01-31 19:54:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223
[2022-01-31 19:54:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231
[2022-01-31 19:54:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:13,769 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 19:54:13,769 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:54:13,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553927744]
[2022-01-31 19:54:13,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [553927744] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:54:13,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:54:13,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73
[2022-01-31 19:54:13,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884053402]
[2022-01-31 19:54:13,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:54:13,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states
[2022-01-31 19:54:13,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:54:13,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants.
[2022-01-31 19:54:13,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=5089, Unknown=0, NotChecked=0, Total=5256
[2022-01-31 19:54:13,770 INFO L87 Difference]: Start difference. First operand 335 states and 358 transitions. Second operand has 73 states, 72 states have (on average 1.9722222222222223) internal successors, (142), 71 states have internal predecessors, (142), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21)
[2022-01-31 19:54:21,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:54:21,133 INFO L93 Difference]: Finished difference Result 437 states and 483 transitions.
[2022-01-31 19:54:21,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states.
[2022-01-31 19:54:21,134 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 1.9722222222222223) internal successors, (142), 71 states have internal predecessors, (142), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 243
[2022-01-31 19:54:21,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:54:21,135 INFO L225 Difference]: With dead ends: 437
[2022-01-31 19:54:21,135 INFO L226 Difference]: Without dead ends: 435
[2022-01-31 19:54:21,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7042 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=744, Invalid=26316, Unknown=0, NotChecked=0, Total=27060
[2022-01-31 19:54:21,136 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 217 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 11967 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 12243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 11967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time
[2022-01-31 19:54:21,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 319 Invalid, 12243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 11967 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time]
[2022-01-31 19:54:21,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states.
[2022-01-31 19:54:21,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 336.
[2022-01-31 19:54:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 268 states have (on average 1.0186567164179106) internal successors, (273), 270 states have internal predecessors, (273), 44 states have call successors, (44), 24 states have call predecessors, (44), 23 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43)
[2022-01-31 19:54:21,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 360 transitions.
[2022-01-31 19:54:21,535 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 360 transitions. Word has length 243
[2022-01-31 19:54:21,535 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:54:21,536 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 360 transitions.
[2022-01-31 19:54:21,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 72 states have (on average 1.9722222222222223) internal successors, (142), 71 states have internal predecessors, (142), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21)
[2022-01-31 19:54:21,536 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 360 transitions.
[2022-01-31 19:54:21,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246
[2022-01-31 19:54:21,537 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:54:21,537 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:54:21,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103
[2022-01-31 19:54:21,537 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:54:21,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:54:21,537 INFO L85 PathProgramCache]: Analyzing trace with hash 125226287, now seen corresponding path program 20 times
[2022-01-31 19:54:21,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:54:21,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404596247]
[2022-01-31 19:54:21,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:54:21,539 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:54:21,539 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:54:21,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:54:21,541 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:54:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:54:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81
[2022-01-31 19:54:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2022-01-31 19:54:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97
[2022-01-31 19:54:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2022-01-31 19:54:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113
[2022-01-31 19:54:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2022-01-31 19:54:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2022-01-31 19:54:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137
[2022-01-31 19:54:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145
[2022-01-31 19:54:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153
[2022-01-31 19:54:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161
[2022-01-31 19:54:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169
[2022-01-31 19:54:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177
[2022-01-31 19:54:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185
[2022-01-31 19:54:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193
[2022-01-31 19:54:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201
[2022-01-31 19:54:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209
[2022-01-31 19:54:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217
[2022-01-31 19:54:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225
[2022-01-31 19:54:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233
[2022-01-31 19:54:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:21,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 19:54:21,887 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:54:21,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404596247]
[2022-01-31 19:54:21,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1404596247] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:54:21,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:54:21,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29
[2022-01-31 19:54:21,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936588547]
[2022-01-31 19:54:21,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:54:21,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2022-01-31 19:54:21,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:54:21,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2022-01-31 19:54:21,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=456, Unknown=0, NotChecked=0, Total=812
[2022-01-31 19:54:21,888 INFO L87 Difference]: Start difference. First operand 336 states and 360 transitions. Second operand has 29 states, 29 states have (on average 2.9655172413793105) internal successors, (86), 28 states have internal predecessors, (86), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:54:23,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:54:23,123 INFO L93 Difference]: Finished difference Result 683 states and 753 transitions.
[2022-01-31 19:54:23,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2022-01-31 19:54:23,124 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.9655172413793105) internal successors, (86), 28 states have internal predecessors, (86), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 245
[2022-01-31 19:54:23,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:54:23,125 INFO L225 Difference]: With dead ends: 683
[2022-01-31 19:54:23,125 INFO L226 Difference]: Without dead ends: 514
[2022-01-31 19:54:23,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1110, Invalid=1860, Unknown=0, NotChecked=0, Total=2970
[2022-01-31 19:54:23,125 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 217 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:54:23,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 25 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:54:23,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states.
[2022-01-31 19:54:23,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 338.
[2022-01-31 19:54:23,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 270 states have (on average 1.0185185185185186) internal successors, (275), 272 states have internal predecessors, (275), 44 states have call successors, (44), 24 states have call predecessors, (44), 23 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43)
[2022-01-31 19:54:23,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 362 transitions.
[2022-01-31 19:54:23,491 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 362 transitions. Word has length 245
[2022-01-31 19:54:23,491 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:54:23,491 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 362 transitions.
[2022-01-31 19:54:23,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.9655172413793105) internal successors, (86), 28 states have internal predecessors, (86), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:54:23,491 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 362 transitions.
[2022-01-31 19:54:23,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247
[2022-01-31 19:54:23,492 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:54:23,492 INFO L514 BasicCegarLoop]: trace histogram [25, 24, 24, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:54:23,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104
[2022-01-31 19:54:23,492 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:54:23,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:54:23,493 INFO L85 PathProgramCache]: Analyzing trace with hash -781880782, now seen corresponding path program 77 times
[2022-01-31 19:54:23,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:54:23,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883353293]
[2022-01-31 19:54:23,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:54:23,494 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:54:23,494 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:54:23,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:54:23,497 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:54:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:54:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82
[2022-01-31 19:54:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90
[2022-01-31 19:54:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98
[2022-01-31 19:54:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106
[2022-01-31 19:54:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114
[2022-01-31 19:54:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122
[2022-01-31 19:54:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2022-01-31 19:54:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138
[2022-01-31 19:54:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146
[2022-01-31 19:54:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154
[2022-01-31 19:54:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162
[2022-01-31 19:54:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170
[2022-01-31 19:54:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178
[2022-01-31 19:54:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186
[2022-01-31 19:54:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194
[2022-01-31 19:54:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202
[2022-01-31 19:54:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210
[2022-01-31 19:54:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218
[2022-01-31 19:54:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226
[2022-01-31 19:54:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234
[2022-01-31 19:54:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:25,475 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 19:54:25,475 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:54:25,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883353293]
[2022-01-31 19:54:25,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [883353293] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:54:25,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:54:25,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74
[2022-01-31 19:54:25,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089996625]
[2022-01-31 19:54:25,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:54:25,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states
[2022-01-31 19:54:25,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:54:25,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants.
[2022-01-31 19:54:25,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=5231, Unknown=0, NotChecked=0, Total=5402
[2022-01-31 19:54:25,476 INFO L87 Difference]: Start difference. First operand 338 states and 362 transitions. Second operand has 74 states, 73 states have (on average 1.9863013698630136) internal successors, (145), 72 states have internal predecessors, (145), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21)
[2022-01-31 19:54:31,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:54:31,557 INFO L93 Difference]: Finished difference Result 350 states and 374 transitions.
[2022-01-31 19:54:31,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states.
[2022-01-31 19:54:31,557 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 1.9863013698630136) internal successors, (145), 72 states have internal predecessors, (145), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 246
[2022-01-31 19:54:31,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:54:31,558 INFO L225 Difference]: With dead ends: 350
[2022-01-31 19:54:31,558 INFO L226 Difference]: Without dead ends: 348
[2022-01-31 19:54:31,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4809 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=586, Invalid=19720, Unknown=0, NotChecked=0, Total=20306
[2022-01-31 19:54:31,559 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 180 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 11220 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 11448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 11220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time
[2022-01-31 19:54:31,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 335 Invalid, 11448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 11220 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time]
[2022-01-31 19:54:31,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states.
[2022-01-31 19:54:31,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 259.
[2022-01-31 19:54:31,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 211 states have (on average 1.0236966824644549) internal successors, (216), 212 states have internal predecessors, (216), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23)
[2022-01-31 19:54:31,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 263 transitions.
[2022-01-31 19:54:31,824 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 263 transitions. Word has length 246
[2022-01-31 19:54:31,825 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:54:31,825 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 263 transitions.
[2022-01-31 19:54:31,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 1.9863013698630136) internal successors, (145), 72 states have internal predecessors, (145), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21)
[2022-01-31 19:54:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 263 transitions.
[2022-01-31 19:54:31,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249
[2022-01-31 19:54:31,826 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:54:31,826 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:54:31,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105
[2022-01-31 19:54:31,826 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:54:31,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:54:31,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1179405964, now seen corresponding path program 78 times
[2022-01-31 19:54:31,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:54:31,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383859791]
[2022-01-31 19:54:31,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:54:31,827 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:54:31,827 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:54:31,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:54:31,829 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:54:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:54:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76
[2022-01-31 19:54:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84
[2022-01-31 19:54:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2022-01-31 19:54:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2022-01-31 19:54:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108
[2022-01-31 19:54:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2022-01-31 19:54:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2022-01-31 19:54:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132
[2022-01-31 19:54:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2022-01-31 19:54:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148
[2022-01-31 19:54:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156
[2022-01-31 19:54:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164
[2022-01-31 19:54:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172
[2022-01-31 19:54:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180
[2022-01-31 19:54:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188
[2022-01-31 19:54:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196
[2022-01-31 19:54:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204
[2022-01-31 19:54:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212
[2022-01-31 19:54:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220
[2022-01-31 19:54:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228
[2022-01-31 19:54:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236
[2022-01-31 19:54:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:32,498 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 19:54:32,498 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:54:32,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383859791]
[2022-01-31 19:54:32,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1383859791] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:54:32,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:54:32,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48
[2022-01-31 19:54:32,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331657938]
[2022-01-31 19:54:32,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:54:32,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states
[2022-01-31 19:54:32,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:54:32,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants.
[2022-01-31 19:54:32,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=557, Invalid=1699, Unknown=0, NotChecked=0, Total=2256
[2022-01-31 19:54:32,499 INFO L87 Difference]: Start difference. First operand 259 states and 263 transitions. Second operand has 48 states, 48 states have (on average 2.9583333333333335) internal successors, (142), 47 states have internal predecessors, (142), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22)
[2022-01-31 19:54:34,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:54:34,069 INFO L93 Difference]: Finished difference Result 355 states and 380 transitions.
[2022-01-31 19:54:34,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2022-01-31 19:54:34,069 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.9583333333333335) internal successors, (142), 47 states have internal predecessors, (142), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 248
[2022-01-31 19:54:34,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:54:34,070 INFO L225 Difference]: With dead ends: 355
[2022-01-31 19:54:34,070 INFO L226 Difference]: Without dead ends: 259
[2022-01-31 19:54:34,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1976 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1707, Invalid=6849, Unknown=0, NotChecked=0, Total=8556
[2022-01-31 19:54:34,071 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 94 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 19:54:34,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 96 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 19:54:34,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states.
[2022-01-31 19:54:34,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259.
[2022-01-31 19:54:34,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 211 states have (on average 1.018957345971564) internal successors, (215), 212 states have internal predecessors, (215), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23)
[2022-01-31 19:54:34,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 262 transitions.
[2022-01-31 19:54:34,296 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 262 transitions. Word has length 248
[2022-01-31 19:54:34,296 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:54:34,296 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 262 transitions.
[2022-01-31 19:54:34,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.9583333333333335) internal successors, (142), 47 states have internal predecessors, (142), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22)
[2022-01-31 19:54:34,296 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 262 transitions.
[2022-01-31 19:54:34,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252
[2022-01-31 19:54:34,297 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:54:34,297 INFO L514 BasicCegarLoop]: trace histogram [24, 23, 23, 22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:54:34,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106
[2022-01-31 19:54:34,297 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:54:34,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:54:34,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1729215216, now seen corresponding path program 79 times
[2022-01-31 19:54:34,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:54:34,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893180679]
[2022-01-31 19:54:34,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:54:34,299 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:54:34,299 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:54:34,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:54:34,301 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:54:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:54:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2022-01-31 19:54:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2022-01-31 19:54:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95
[2022-01-31 19:54:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103
[2022-01-31 19:54:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2022-01-31 19:54:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119
[2022-01-31 19:54:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127
[2022-01-31 19:54:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2022-01-31 19:54:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143
[2022-01-31 19:54:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151
[2022-01-31 19:54:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2022-01-31 19:54:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167
[2022-01-31 19:54:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175
[2022-01-31 19:54:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183
[2022-01-31 19:54:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191
[2022-01-31 19:54:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199
[2022-01-31 19:54:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207
[2022-01-31 19:54:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215
[2022-01-31 19:54:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223
[2022-01-31 19:54:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231
[2022-01-31 19:54:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239
[2022-01-31 19:54:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:36,337 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 19:54:36,338 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:54:36,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893180679]
[2022-01-31 19:54:36,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [893180679] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:54:36,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:54:36,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75
[2022-01-31 19:54:36,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880412859]
[2022-01-31 19:54:36,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:54:36,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states
[2022-01-31 19:54:36,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:54:36,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants.
[2022-01-31 19:54:36,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=5379, Unknown=0, NotChecked=0, Total=5550
[2022-01-31 19:54:36,345 INFO L87 Difference]: Start difference. First operand 259 states and 262 transitions. Second operand has 75 states, 74 states have (on average 1.9594594594594594) internal successors, (145), 73 states have internal predecessors, (145), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22)
[2022-01-31 19:54:42,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:54:42,635 INFO L93 Difference]: Finished difference Result 358 states and 383 transitions.
[2022-01-31 19:54:42,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states.
[2022-01-31 19:54:42,635 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 1.9594594594594594) internal successors, (145), 73 states have internal predecessors, (145), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 251
[2022-01-31 19:54:42,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:54:42,636 INFO L225 Difference]: With dead ends: 358
[2022-01-31 19:54:42,636 INFO L226 Difference]: Without dead ends: 356
[2022-01-31 19:54:42,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5176 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=557, Invalid=20905, Unknown=0, NotChecked=0, Total=21462
[2022-01-31 19:54:42,637 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 121 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 11522 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 11690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 11522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time
[2022-01-31 19:54:42,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 331 Invalid, 11690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 11522 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time]
[2022-01-31 19:54:42,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states.
[2022-01-31 19:54:43,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 350.
[2022-01-31 19:54:43,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 279 states have (on average 1.014336917562724) internal successors, (283), 281 states have internal predecessors, (283), 46 states have call successors, (46), 25 states have call predecessors, (46), 24 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45)
[2022-01-31 19:54:43,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 374 transitions.
[2022-01-31 19:54:43,040 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 374 transitions. Word has length 251
[2022-01-31 19:54:43,040 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:54:43,040 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 374 transitions.
[2022-01-31 19:54:43,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 1.9594594594594594) internal successors, (145), 73 states have internal predecessors, (145), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22)
[2022-01-31 19:54:43,040 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 374 transitions.
[2022-01-31 19:54:43,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255
[2022-01-31 19:54:43,041 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:54:43,041 INFO L514 BasicCegarLoop]: trace histogram [25, 24, 24, 22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:54:43,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107
[2022-01-31 19:54:43,041 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:54:43,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:54:43,042 INFO L85 PathProgramCache]: Analyzing trace with hash 91374604, now seen corresponding path program 80 times
[2022-01-31 19:54:43,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:54:43,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151481751]
[2022-01-31 19:54:43,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:54:43,043 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:54:43,043 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:54:43,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:54:43,046 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:54:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:54:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82
[2022-01-31 19:54:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90
[2022-01-31 19:54:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98
[2022-01-31 19:54:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106
[2022-01-31 19:54:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114
[2022-01-31 19:54:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122
[2022-01-31 19:54:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2022-01-31 19:54:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138
[2022-01-31 19:54:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146
[2022-01-31 19:54:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154
[2022-01-31 19:54:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162
[2022-01-31 19:54:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170
[2022-01-31 19:54:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178
[2022-01-31 19:54:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186
[2022-01-31 19:54:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194
[2022-01-31 19:54:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202
[2022-01-31 19:54:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210
[2022-01-31 19:54:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218
[2022-01-31 19:54:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226
[2022-01-31 19:54:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234
[2022-01-31 19:54:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242
[2022-01-31 19:54:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:45,145 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 19:54:45,145 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:54:45,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151481751]
[2022-01-31 19:54:45,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1151481751] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:54:45,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:54:45,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76
[2022-01-31 19:54:45,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291940579]
[2022-01-31 19:54:45,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:54:45,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states
[2022-01-31 19:54:45,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:54:45,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants.
[2022-01-31 19:54:45,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=5526, Unknown=0, NotChecked=0, Total=5700
[2022-01-31 19:54:45,147 INFO L87 Difference]: Start difference. First operand 350 states and 374 transitions. Second operand has 76 states, 75 states have (on average 1.9733333333333334) internal successors, (148), 74 states have internal predecessors, (148), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22)
[2022-01-31 19:54:53,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:54:53,267 INFO L93 Difference]: Finished difference Result 456 states and 504 transitions.
[2022-01-31 19:54:53,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states.
[2022-01-31 19:54:53,267 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 1.9733333333333334) internal successors, (148), 74 states have internal predecessors, (148), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 254
[2022-01-31 19:54:53,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:54:53,268 INFO L225 Difference]: With dead ends: 456
[2022-01-31 19:54:53,268 INFO L226 Difference]: Without dead ends: 454
[2022-01-31 19:54:53,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7684 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=776, Invalid=28636, Unknown=0, NotChecked=0, Total=29412
[2022-01-31 19:54:53,270 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 225 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 13466 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 13754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 13466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time
[2022-01-31 19:54:53,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 341 Invalid, 13754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 13466 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time]
[2022-01-31 19:54:53,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states.
[2022-01-31 19:54:53,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 351.
[2022-01-31 19:54:53,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 280 states have (on average 1.0178571428571428) internal successors, (285), 282 states have internal predecessors, (285), 46 states have call successors, (46), 25 states have call predecessors, (46), 24 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45)
[2022-01-31 19:54:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 376 transitions.
[2022-01-31 19:54:53,692 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 376 transitions. Word has length 254
[2022-01-31 19:54:53,692 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:54:53,692 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 376 transitions.
[2022-01-31 19:54:53,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 1.9733333333333334) internal successors, (148), 74 states have internal predecessors, (148), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22)
[2022-01-31 19:54:53,693 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 376 transitions.
[2022-01-31 19:54:53,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257
[2022-01-31 19:54:53,693 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:54:53,693 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:54:53,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108
[2022-01-31 19:54:53,694 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:54:53,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:54:53,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1181875163, now seen corresponding path program 21 times
[2022-01-31 19:54:53,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:54:53,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567729407]
[2022-01-31 19:54:53,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:54:53,695 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:54:53,695 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:54:53,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:54:53,697 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:54:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:54:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84
[2022-01-31 19:54:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2022-01-31 19:54:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2022-01-31 19:54:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108
[2022-01-31 19:54:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2022-01-31 19:54:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2022-01-31 19:54:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132
[2022-01-31 19:54:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2022-01-31 19:54:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148
[2022-01-31 19:54:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156
[2022-01-31 19:54:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164
[2022-01-31 19:54:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172
[2022-01-31 19:54:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180
[2022-01-31 19:54:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188
[2022-01-31 19:54:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196
[2022-01-31 19:54:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204
[2022-01-31 19:54:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212
[2022-01-31 19:54:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220
[2022-01-31 19:54:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228
[2022-01-31 19:54:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236
[2022-01-31 19:54:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244
[2022-01-31 19:54:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:54,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 19:54:54,052 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:54:54,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567729407]
[2022-01-31 19:54:54,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1567729407] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:54:54,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:54:54,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30
[2022-01-31 19:54:54,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794924849]
[2022-01-31 19:54:54,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:54:54,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states
[2022-01-31 19:54:54,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:54:54,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2022-01-31 19:54:54,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=487, Unknown=0, NotChecked=0, Total=870
[2022-01-31 19:54:54,053 INFO L87 Difference]: Start difference. First operand 351 states and 376 transitions. Second operand has 30 states, 30 states have (on average 2.966666666666667) internal successors, (89), 29 states have internal predecessors, (89), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:54:55,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:54:55,387 INFO L93 Difference]: Finished difference Result 714 states and 787 transitions.
[2022-01-31 19:54:55,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2022-01-31 19:54:55,388 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.966666666666667) internal successors, (89), 29 states have internal predecessors, (89), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 256
[2022-01-31 19:54:55,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:54:55,389 INFO L225 Difference]: With dead ends: 714
[2022-01-31 19:54:55,389 INFO L226 Difference]: Without dead ends: 537
[2022-01-31 19:54:55,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1193, Invalid=1999, Unknown=0, NotChecked=0, Total=3192
[2022-01-31 19:54:55,389 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 235 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:54:55,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 21 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:54:55,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states.
[2022-01-31 19:54:55,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 353.
[2022-01-31 19:54:55,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 282 states have (on average 1.0177304964539007) internal successors, (287), 284 states have internal predecessors, (287), 46 states have call successors, (46), 25 states have call predecessors, (46), 24 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45)
[2022-01-31 19:54:55,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 378 transitions.
[2022-01-31 19:54:55,798 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 378 transitions. Word has length 256
[2022-01-31 19:54:55,799 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:54:55,799 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 378 transitions.
[2022-01-31 19:54:55,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.966666666666667) internal successors, (89), 29 states have internal predecessors, (89), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:54:55,799 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 378 transitions.
[2022-01-31 19:54:55,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258
[2022-01-31 19:54:55,800 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:54:55,800 INFO L514 BasicCegarLoop]: trace histogram [26, 25, 25, 22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:54:55,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109
[2022-01-31 19:54:55,800 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:54:55,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:54:55,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1989814928, now seen corresponding path program 81 times
[2022-01-31 19:54:55,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:54:55,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742762490]
[2022-01-31 19:54:55,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:54:55,801 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:54:55,801 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:54:55,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:54:55,804 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:54:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:54:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85
[2022-01-31 19:54:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93
[2022-01-31 19:54:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101
[2022-01-31 19:54:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109
[2022-01-31 19:54:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117
[2022-01-31 19:54:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125
[2022-01-31 19:54:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133
[2022-01-31 19:54:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2022-01-31 19:54:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149
[2022-01-31 19:54:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157
[2022-01-31 19:54:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165
[2022-01-31 19:54:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173
[2022-01-31 19:54:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181
[2022-01-31 19:54:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189
[2022-01-31 19:54:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197
[2022-01-31 19:54:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205
[2022-01-31 19:54:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213
[2022-01-31 19:54:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221
[2022-01-31 19:54:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229
[2022-01-31 19:54:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237
[2022-01-31 19:54:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245
[2022-01-31 19:54:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:54:57,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 19:54:57,953 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:54:57,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742762490]
[2022-01-31 19:54:57,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1742762490] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:54:57,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:54:57,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77
[2022-01-31 19:54:57,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022821593]
[2022-01-31 19:54:57,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:54:57,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states
[2022-01-31 19:54:57,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:54:57,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants.
[2022-01-31 19:54:57,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=5674, Unknown=0, NotChecked=0, Total=5852
[2022-01-31 19:54:57,955 INFO L87 Difference]: Start difference. First operand 353 states and 378 transitions. Second operand has 77 states, 76 states have (on average 1.986842105263158) internal successors, (151), 75 states have internal predecessors, (151), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22)
[2022-01-31 19:55:04,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:55:04,535 INFO L93 Difference]: Finished difference Result 365 states and 390 transitions.
[2022-01-31 19:55:04,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states.
[2022-01-31 19:55:04,536 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 1.986842105263158) internal successors, (151), 75 states have internal predecessors, (151), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 257
[2022-01-31 19:55:04,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:55:04,537 INFO L225 Difference]: With dead ends: 365
[2022-01-31 19:55:04,537 INFO L226 Difference]: Without dead ends: 363
[2022-01-31 19:55:04,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5246 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=611, Invalid=21441, Unknown=0, NotChecked=0, Total=22052
[2022-01-31 19:55:04,538 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 236 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 11993 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 12276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 11993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time
[2022-01-31 19:55:04,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 342 Invalid, 12276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 11993 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time]
[2022-01-31 19:55:04,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states.
[2022-01-31 19:55:04,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 270.
[2022-01-31 19:55:04,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 220 states have (on average 1.0227272727272727) internal successors, (225), 221 states have internal predecessors, (225), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24)
[2022-01-31 19:55:04,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 274 transitions.
[2022-01-31 19:55:04,780 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 274 transitions. Word has length 257
[2022-01-31 19:55:04,780 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:55:04,780 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 274 transitions.
[2022-01-31 19:55:04,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 1.986842105263158) internal successors, (151), 75 states have internal predecessors, (151), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22)
[2022-01-31 19:55:04,780 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 274 transitions.
[2022-01-31 19:55:04,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260
[2022-01-31 19:55:04,781 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:55:04,781 INFO L514 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:55:04,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110
[2022-01-31 19:55:04,781 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:55:04,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:55:04,781 INFO L85 PathProgramCache]: Analyzing trace with hash 2032201418, now seen corresponding path program 82 times
[2022-01-31 19:55:04,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:55:04,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399779004]
[2022-01-31 19:55:04,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:55:04,782 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:55:04,782 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:55:04,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:55:04,784 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:55:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:55:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2022-01-31 19:55:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2022-01-31 19:55:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95
[2022-01-31 19:55:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103
[2022-01-31 19:55:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2022-01-31 19:55:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119
[2022-01-31 19:55:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127
[2022-01-31 19:55:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2022-01-31 19:55:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143
[2022-01-31 19:55:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151
[2022-01-31 19:55:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2022-01-31 19:55:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167
[2022-01-31 19:55:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175
[2022-01-31 19:55:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183
[2022-01-31 19:55:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191
[2022-01-31 19:55:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199
[2022-01-31 19:55:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207
[2022-01-31 19:55:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215
[2022-01-31 19:55:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223
[2022-01-31 19:55:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231
[2022-01-31 19:55:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239
[2022-01-31 19:55:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247
[2022-01-31 19:55:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:05,479 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 19:55:05,479 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:55:05,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399779004]
[2022-01-31 19:55:05,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1399779004] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:55:05,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:55:05,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50
[2022-01-31 19:55:05,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936404819]
[2022-01-31 19:55:05,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:55:05,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states
[2022-01-31 19:55:05,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:55:05,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants.
[2022-01-31 19:55:05,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=1845, Unknown=0, NotChecked=0, Total=2450
[2022-01-31 19:55:05,480 INFO L87 Difference]: Start difference. First operand 270 states and 274 transitions. Second operand has 50 states, 50 states have (on average 2.96) internal successors, (148), 49 states have internal predecessors, (148), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2022-01-31 19:55:07,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:55:07,129 INFO L93 Difference]: Finished difference Result 370 states and 396 transitions.
[2022-01-31 19:55:07,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2022-01-31 19:55:07,129 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.96) internal successors, (148), 49 states have internal predecessors, (148), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 259
[2022-01-31 19:55:07,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:55:07,130 INFO L225 Difference]: With dead ends: 370
[2022-01-31 19:55:07,130 INFO L226 Difference]: Without dead ends: 270
[2022-01-31 19:55:07,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2158 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1853, Invalid=7459, Unknown=0, NotChecked=0, Total=9312
[2022-01-31 19:55:07,131 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 97 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-31 19:55:07,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 108 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-31 19:55:07,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states.
[2022-01-31 19:55:07,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270.
[2022-01-31 19:55:07,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 220 states have (on average 1.018181818181818) internal successors, (224), 221 states have internal predecessors, (224), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24)
[2022-01-31 19:55:07,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 273 transitions.
[2022-01-31 19:55:07,365 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 273 transitions. Word has length 259
[2022-01-31 19:55:07,365 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:55:07,365 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 273 transitions.
[2022-01-31 19:55:07,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.96) internal successors, (148), 49 states have internal predecessors, (148), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2022-01-31 19:55:07,365 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 273 transitions.
[2022-01-31 19:55:07,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263
[2022-01-31 19:55:07,366 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:55:07,366 INFO L514 BasicCegarLoop]: trace histogram [25, 24, 24, 23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:55:07,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111
[2022-01-31 19:55:07,366 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:55:07,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:55:07,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1906009114, now seen corresponding path program 83 times
[2022-01-31 19:55:07,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:55:07,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434784061]
[2022-01-31 19:55:07,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:55:07,367 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:55:07,367 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:55:07,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:55:07,370 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:55:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:55:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82
[2022-01-31 19:55:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90
[2022-01-31 19:55:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98
[2022-01-31 19:55:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106
[2022-01-31 19:55:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114
[2022-01-31 19:55:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122
[2022-01-31 19:55:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2022-01-31 19:55:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138
[2022-01-31 19:55:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146
[2022-01-31 19:55:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154
[2022-01-31 19:55:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162
[2022-01-31 19:55:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170
[2022-01-31 19:55:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178
[2022-01-31 19:55:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186
[2022-01-31 19:55:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194
[2022-01-31 19:55:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202
[2022-01-31 19:55:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210
[2022-01-31 19:55:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218
[2022-01-31 19:55:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226
[2022-01-31 19:55:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234
[2022-01-31 19:55:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242
[2022-01-31 19:55:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250
[2022-01-31 19:55:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:09,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 19:55:09,640 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:55:09,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434784061]
[2022-01-31 19:55:09,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1434784061] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:55:09,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:55:09,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78
[2022-01-31 19:55:09,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869456332]
[2022-01-31 19:55:09,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:55:09,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states
[2022-01-31 19:55:09,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:55:09,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants.
[2022-01-31 19:55:09,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=5828, Unknown=0, NotChecked=0, Total=6006
[2022-01-31 19:55:09,642 INFO L87 Difference]: Start difference. First operand 270 states and 273 transitions. Second operand has 78 states, 77 states have (on average 1.9610389610389611) internal successors, (151), 76 states have internal predecessors, (151), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2022-01-31 19:55:16,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:55:16,836 INFO L93 Difference]: Finished difference Result 373 states and 399 transitions.
[2022-01-31 19:55:16,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states.
[2022-01-31 19:55:16,837 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 1.9610389610389611) internal successors, (151), 76 states have internal predecessors, (151), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 262
[2022-01-31 19:55:16,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:55:16,838 INFO L225 Difference]: With dead ends: 373
[2022-01-31 19:55:16,838 INFO L226 Difference]: Without dead ends: 371
[2022-01-31 19:55:16,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5629 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=580, Invalid=22676, Unknown=0, NotChecked=0, Total=23256
[2022-01-31 19:55:16,839 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 125 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 13600 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 13775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 13600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time
[2022-01-31 19:55:16,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 372 Invalid, 13775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 13600 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time]
[2022-01-31 19:55:16,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states.
[2022-01-31 19:55:17,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 365.
[2022-01-31 19:55:17,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 291 states have (on average 1.013745704467354) internal successors, (295), 293 states have internal predecessors, (295), 48 states have call successors, (48), 26 states have call predecessors, (48), 25 states have return successors, (47), 45 states have call predecessors, (47), 47 states have call successors, (47)
[2022-01-31 19:55:17,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 390 transitions.
[2022-01-31 19:55:17,274 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 390 transitions. Word has length 262
[2022-01-31 19:55:17,274 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:55:17,274 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 390 transitions.
[2022-01-31 19:55:17,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 1.9610389610389611) internal successors, (151), 76 states have internal predecessors, (151), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2022-01-31 19:55:17,274 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 390 transitions.
[2022-01-31 19:55:17,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266
[2022-01-31 19:55:17,275 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:55:17,275 INFO L514 BasicCegarLoop]: trace histogram [26, 25, 25, 23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:55:17,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112
[2022-01-31 19:55:17,275 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:55:17,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:55:17,275 INFO L85 PathProgramCache]: Analyzing trace with hash 485656906, now seen corresponding path program 84 times
[2022-01-31 19:55:17,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:55:17,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987753660]
[2022-01-31 19:55:17,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:55:17,276 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:55:17,277 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:55:17,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:55:17,279 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:55:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:55:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85
[2022-01-31 19:55:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93
[2022-01-31 19:55:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101
[2022-01-31 19:55:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109
[2022-01-31 19:55:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117
[2022-01-31 19:55:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125
[2022-01-31 19:55:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133
[2022-01-31 19:55:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2022-01-31 19:55:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149
[2022-01-31 19:55:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157
[2022-01-31 19:55:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165
[2022-01-31 19:55:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173
[2022-01-31 19:55:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181
[2022-01-31 19:55:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189
[2022-01-31 19:55:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197
[2022-01-31 19:55:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205
[2022-01-31 19:55:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213
[2022-01-31 19:55:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221
[2022-01-31 19:55:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229
[2022-01-31 19:55:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237
[2022-01-31 19:55:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245
[2022-01-31 19:55:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253
[2022-01-31 19:55:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:19,538 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 19:55:19,538 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:55:19,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987753660]
[2022-01-31 19:55:19,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [987753660] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:55:19,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:55:19,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79
[2022-01-31 19:55:19,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534404348]
[2022-01-31 19:55:19,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:55:19,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states
[2022-01-31 19:55:19,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:55:19,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants.
[2022-01-31 19:55:19,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=5981, Unknown=0, NotChecked=0, Total=6162
[2022-01-31 19:55:19,540 INFO L87 Difference]: Start difference. First operand 365 states and 390 transitions. Second operand has 79 states, 78 states have (on average 1.9743589743589745) internal successors, (154), 77 states have internal predecessors, (154), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2022-01-31 19:55:28,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:55:28,695 INFO L93 Difference]: Finished difference Result 475 states and 525 transitions.
[2022-01-31 19:55:28,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states.
[2022-01-31 19:55:28,696 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 1.9743589743589745) internal successors, (154), 77 states have internal predecessors, (154), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 265
[2022-01-31 19:55:28,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:55:28,697 INFO L225 Difference]: With dead ends: 475
[2022-01-31 19:55:28,697 INFO L226 Difference]: Without dead ends: 473
[2022-01-31 19:55:28,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8354 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=808, Invalid=31054, Unknown=0, NotChecked=0, Total=31862
[2022-01-31 19:55:28,698 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 183 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 15813 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 16066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 15813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2022-01-31 19:55:28,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 385 Invalid, 16066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 15813 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2022-01-31 19:55:28,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states.
[2022-01-31 19:55:29,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 366.
[2022-01-31 19:55:29,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 292 states have (on average 1.0171232876712328) internal successors, (297), 294 states have internal predecessors, (297), 48 states have call successors, (48), 26 states have call predecessors, (48), 25 states have return successors, (47), 45 states have call predecessors, (47), 47 states have call successors, (47)
[2022-01-31 19:55:29,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 392 transitions.
[2022-01-31 19:55:29,131 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 392 transitions. Word has length 265
[2022-01-31 19:55:29,131 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:55:29,132 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 392 transitions.
[2022-01-31 19:55:29,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 1.9743589743589745) internal successors, (154), 77 states have internal predecessors, (154), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2022-01-31 19:55:29,132 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 392 transitions.
[2022-01-31 19:55:29,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268
[2022-01-31 19:55:29,133 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:55:29,133 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:55:29,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113
[2022-01-31 19:55:29,133 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:55:29,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:55:29,133 INFO L85 PathProgramCache]: Analyzing trace with hash -399026333, now seen corresponding path program 22 times
[2022-01-31 19:55:29,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:55:29,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636914428]
[2022-01-31 19:55:29,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:55:29,134 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:55:29,134 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:55:29,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:55:29,136 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:55:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:55:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2022-01-31 19:55:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95
[2022-01-31 19:55:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103
[2022-01-31 19:55:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2022-01-31 19:55:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119
[2022-01-31 19:55:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127
[2022-01-31 19:55:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2022-01-31 19:55:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143
[2022-01-31 19:55:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151
[2022-01-31 19:55:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2022-01-31 19:55:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167
[2022-01-31 19:55:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175
[2022-01-31 19:55:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183
[2022-01-31 19:55:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191
[2022-01-31 19:55:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199
[2022-01-31 19:55:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207
[2022-01-31 19:55:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215
[2022-01-31 19:55:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223
[2022-01-31 19:55:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231
[2022-01-31 19:55:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239
[2022-01-31 19:55:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247
[2022-01-31 19:55:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255
[2022-01-31 19:55:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 19:55:29,529 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:55:29,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636914428]
[2022-01-31 19:55:29,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1636914428] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:55:29,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:55:29,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31
[2022-01-31 19:55:29,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273537115]
[2022-01-31 19:55:29,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:55:29,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states
[2022-01-31 19:55:29,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:55:29,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants.
[2022-01-31 19:55:29,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=519, Unknown=0, NotChecked=0, Total=930
[2022-01-31 19:55:29,530 INFO L87 Difference]: Start difference. First operand 366 states and 392 transitions. Second operand has 31 states, 31 states have (on average 2.967741935483871) internal successors, (92), 30 states have internal predecessors, (92), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:55:31,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:55:31,012 INFO L93 Difference]: Finished difference Result 745 states and 821 transitions.
[2022-01-31 19:55:31,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2022-01-31 19:55:31,012 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.967741935483871) internal successors, (92), 30 states have internal predecessors, (92), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 267
[2022-01-31 19:55:31,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:55:31,013 INFO L225 Difference]: With dead ends: 745
[2022-01-31 19:55:31,013 INFO L226 Difference]: Without dead ends: 560
[2022-01-31 19:55:31,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1279, Invalid=2143, Unknown=0, NotChecked=0, Total=3422
[2022-01-31 19:55:31,014 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 237 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:55:31,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 25 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:55:31,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states.
[2022-01-31 19:55:31,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 368.
[2022-01-31 19:55:31,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 294 states have (on average 1.0170068027210883) internal successors, (299), 296 states have internal predecessors, (299), 48 states have call successors, (48), 26 states have call predecessors, (48), 25 states have return successors, (47), 45 states have call predecessors, (47), 47 states have call successors, (47)
[2022-01-31 19:55:31,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 394 transitions.
[2022-01-31 19:55:31,470 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 394 transitions. Word has length 267
[2022-01-31 19:55:31,470 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:55:31,470 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 394 transitions.
[2022-01-31 19:55:31,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.967741935483871) internal successors, (92), 30 states have internal predecessors, (92), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:55:31,470 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 394 transitions.
[2022-01-31 19:55:31,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269
[2022-01-31 19:55:31,471 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:55:31,471 INFO L514 BasicCegarLoop]: trace histogram [27, 26, 26, 23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:55:31,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114
[2022-01-31 19:55:31,471 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:55:31,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:55:31,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1395585382, now seen corresponding path program 85 times
[2022-01-31 19:55:31,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:55:31,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575770774]
[2022-01-31 19:55:31,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:55:31,472 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:55:31,472 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:55:31,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:55:31,475 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:55:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:55:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88
[2022-01-31 19:55:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96
[2022-01-31 19:55:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104
[2022-01-31 19:55:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112
[2022-01-31 19:55:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2022-01-31 19:55:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128
[2022-01-31 19:55:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2022-01-31 19:55:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144
[2022-01-31 19:55:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152
[2022-01-31 19:55:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160
[2022-01-31 19:55:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168
[2022-01-31 19:55:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176
[2022-01-31 19:55:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184
[2022-01-31 19:55:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192
[2022-01-31 19:55:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200
[2022-01-31 19:55:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208
[2022-01-31 19:55:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216
[2022-01-31 19:55:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224
[2022-01-31 19:55:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232
[2022-01-31 19:55:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240
[2022-01-31 19:55:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248
[2022-01-31 19:55:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256
[2022-01-31 19:55:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:33,803 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 19:55:33,804 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:55:33,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575770774]
[2022-01-31 19:55:33,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [575770774] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:55:33,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:55:33,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80
[2022-01-31 19:55:33,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55022680]
[2022-01-31 19:55:33,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:55:33,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states
[2022-01-31 19:55:33,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:55:33,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants.
[2022-01-31 19:55:33,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=6135, Unknown=0, NotChecked=0, Total=6320
[2022-01-31 19:55:33,805 INFO L87 Difference]: Start difference. First operand 368 states and 394 transitions. Second operand has 80 states, 79 states have (on average 1.9873417721518987) internal successors, (157), 78 states have internal predecessors, (157), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2022-01-31 19:55:40,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:55:40,628 INFO L93 Difference]: Finished difference Result 380 states and 406 transitions.
[2022-01-31 19:55:40,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states.
[2022-01-31 19:55:40,629 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 1.9873417721518987) internal successors, (157), 78 states have internal predecessors, (157), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 268
[2022-01-31 19:55:40,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:55:40,629 INFO L225 Difference]: With dead ends: 380
[2022-01-31 19:55:40,630 INFO L226 Difference]: Without dead ends: 378
[2022-01-31 19:55:40,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5702 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=636, Invalid=23234, Unknown=0, NotChecked=0, Total=23870
[2022-01-31 19:55:40,631 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 193 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 12294 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 12542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 12294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:55:40,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 338 Invalid, 12542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 12294 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time]
[2022-01-31 19:55:40,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states.
[2022-01-31 19:55:40,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 281.
[2022-01-31 19:55:40,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 229 states have (on average 1.0218340611353711) internal successors, (234), 230 states have internal predecessors, (234), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25)
[2022-01-31 19:55:40,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 285 transitions.
[2022-01-31 19:55:40,885 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 285 transitions. Word has length 268
[2022-01-31 19:55:40,885 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:55:40,885 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 285 transitions.
[2022-01-31 19:55:40,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 1.9873417721518987) internal successors, (157), 78 states have internal predecessors, (157), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2022-01-31 19:55:40,885 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 285 transitions.
[2022-01-31 19:55:40,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271
[2022-01-31 19:55:40,886 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:55:40,886 INFO L514 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:55:40,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115
[2022-01-31 19:55:40,886 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:55:40,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:55:40,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1990821440, now seen corresponding path program 86 times
[2022-01-31 19:55:40,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:55:40,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988214512]
[2022-01-31 19:55:40,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:55:40,887 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:55:40,887 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:55:40,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:55:40,889 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:55:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:55:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82
[2022-01-31 19:55:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90
[2022-01-31 19:55:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98
[2022-01-31 19:55:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106
[2022-01-31 19:55:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114
[2022-01-31 19:55:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122
[2022-01-31 19:55:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2022-01-31 19:55:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138
[2022-01-31 19:55:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146
[2022-01-31 19:55:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154
[2022-01-31 19:55:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162
[2022-01-31 19:55:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170
[2022-01-31 19:55:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178
[2022-01-31 19:55:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186
[2022-01-31 19:55:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194
[2022-01-31 19:55:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202
[2022-01-31 19:55:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210
[2022-01-31 19:55:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218
[2022-01-31 19:55:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226
[2022-01-31 19:55:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234
[2022-01-31 19:55:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242
[2022-01-31 19:55:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250
[2022-01-31 19:55:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258
[2022-01-31 19:55:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:41,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 19:55:41,636 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:55:41,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988214512]
[2022-01-31 19:55:41,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [988214512] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:55:41,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:55:41,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52
[2022-01-31 19:55:41,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930018147]
[2022-01-31 19:55:41,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:55:41,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states
[2022-01-31 19:55:41,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:55:41,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants.
[2022-01-31 19:55:41,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=655, Invalid=1997, Unknown=0, NotChecked=0, Total=2652
[2022-01-31 19:55:41,638 INFO L87 Difference]: Start difference. First operand 281 states and 285 transitions. Second operand has 52 states, 52 states have (on average 2.9615384615384617) internal successors, (154), 51 states have internal predecessors, (154), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2022-01-31 19:55:43,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:55:43,424 INFO L93 Difference]: Finished difference Result 385 states and 412 transitions.
[2022-01-31 19:55:43,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states.
[2022-01-31 19:55:43,425 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.9615384615384617) internal successors, (154), 51 states have internal predecessors, (154), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 270
[2022-01-31 19:55:43,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:55:43,426 INFO L225 Difference]: With dead ends: 385
[2022-01-31 19:55:43,426 INFO L226 Difference]: Without dead ends: 281
[2022-01-31 19:55:43,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2348 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2005, Invalid=8095, Unknown=0, NotChecked=0, Total=10100
[2022-01-31 19:55:43,427 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 100 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-31 19:55:43,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 105 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-31 19:55:43,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states.
[2022-01-31 19:55:43,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281.
[2022-01-31 19:55:43,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 229 states have (on average 1.017467248908297) internal successors, (233), 230 states have internal predecessors, (233), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25)
[2022-01-31 19:55:43,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 284 transitions.
[2022-01-31 19:55:43,684 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 284 transitions. Word has length 270
[2022-01-31 19:55:43,684 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:55:43,684 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 284 transitions.
[2022-01-31 19:55:43,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.9615384615384617) internal successors, (154), 51 states have internal predecessors, (154), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2022-01-31 19:55:43,684 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 284 transitions.
[2022-01-31 19:55:43,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274
[2022-01-31 19:55:43,685 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:55:43,685 INFO L514 BasicCegarLoop]: trace histogram [26, 25, 25, 24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:55:43,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116
[2022-01-31 19:55:43,685 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:55:43,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:55:43,685 INFO L85 PathProgramCache]: Analyzing trace with hash -2141011164, now seen corresponding path program 87 times
[2022-01-31 19:55:43,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:55:43,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470031790]
[2022-01-31 19:55:43,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:55:43,686 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:55:43,686 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:55:43,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:55:43,689 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:55:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:45,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:55:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:45,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85
[2022-01-31 19:55:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:45,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93
[2022-01-31 19:55:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:45,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101
[2022-01-31 19:55:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:45,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109
[2022-01-31 19:55:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:45,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117
[2022-01-31 19:55:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:46,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125
[2022-01-31 19:55:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:46,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133
[2022-01-31 19:55:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:46,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2022-01-31 19:55:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:46,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149
[2022-01-31 19:55:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:46,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157
[2022-01-31 19:55:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:46,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165
[2022-01-31 19:55:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:46,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173
[2022-01-31 19:55:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:46,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181
[2022-01-31 19:55:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:46,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189
[2022-01-31 19:55:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:46,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197
[2022-01-31 19:55:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:46,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205
[2022-01-31 19:55:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:46,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213
[2022-01-31 19:55:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:46,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221
[2022-01-31 19:55:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:46,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229
[2022-01-31 19:55:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:46,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237
[2022-01-31 19:55:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:46,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245
[2022-01-31 19:55:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:46,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253
[2022-01-31 19:55:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:46,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261
[2022-01-31 19:55:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:46,032 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 19:55:46,032 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:55:46,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470031790]
[2022-01-31 19:55:46,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1470031790] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:55:46,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:55:46,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81
[2022-01-31 19:55:46,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592622406]
[2022-01-31 19:55:46,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:55:46,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states
[2022-01-31 19:55:46,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:55:46,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants.
[2022-01-31 19:55:46,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=6295, Unknown=0, NotChecked=0, Total=6480
[2022-01-31 19:55:46,034 INFO L87 Difference]: Start difference. First operand 281 states and 284 transitions. Second operand has 81 states, 80 states have (on average 1.9625) internal successors, (157), 79 states have internal predecessors, (157), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2022-01-31 19:55:53,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:55:53,460 INFO L93 Difference]: Finished difference Result 388 states and 415 transitions.
[2022-01-31 19:55:53,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states.
[2022-01-31 19:55:53,461 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 1.9625) internal successors, (157), 79 states have internal predecessors, (157), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 273
[2022-01-31 19:55:53,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:55:53,461 INFO L225 Difference]: With dead ends: 388
[2022-01-31 19:55:53,461 INFO L226 Difference]: Without dead ends: 386
[2022-01-31 19:55:53,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6101 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=603, Invalid=24519, Unknown=0, NotChecked=0, Total=25122
[2022-01-31 19:55:53,463 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 129 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 13840 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 14022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 13840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time
[2022-01-31 19:55:53,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 367 Invalid, 14022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 13840 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time]
[2022-01-31 19:55:53,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states.
[2022-01-31 19:55:53,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 380.
[2022-01-31 19:55:53,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 303 states have (on average 1.0132013201320131) internal successors, (307), 305 states have internal predecessors, (307), 50 states have call successors, (50), 27 states have call predecessors, (50), 26 states have return successors, (49), 47 states have call predecessors, (49), 49 states have call successors, (49)
[2022-01-31 19:55:53,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 406 transitions.
[2022-01-31 19:55:53,928 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 406 transitions. Word has length 273
[2022-01-31 19:55:53,929 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:55:53,929 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 406 transitions.
[2022-01-31 19:55:53,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 1.9625) internal successors, (157), 79 states have internal predecessors, (157), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2022-01-31 19:55:53,929 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 406 transitions.
[2022-01-31 19:55:53,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277
[2022-01-31 19:55:53,930 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:55:53,930 INFO L514 BasicCegarLoop]: trace histogram [27, 26, 26, 24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:55:53,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117
[2022-01-31 19:55:53,930 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:55:53,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:55:53,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1087156416, now seen corresponding path program 88 times
[2022-01-31 19:55:53,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:55:53,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788792545]
[2022-01-31 19:55:53,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:55:53,931 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:55:53,931 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:55:53,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:55:53,933 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:55:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:55:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88
[2022-01-31 19:55:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96
[2022-01-31 19:55:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104
[2022-01-31 19:55:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112
[2022-01-31 19:55:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2022-01-31 19:55:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128
[2022-01-31 19:55:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2022-01-31 19:55:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144
[2022-01-31 19:55:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152
[2022-01-31 19:55:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160
[2022-01-31 19:55:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168
[2022-01-31 19:55:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176
[2022-01-31 19:55:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184
[2022-01-31 19:55:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192
[2022-01-31 19:55:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200
[2022-01-31 19:55:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208
[2022-01-31 19:55:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216
[2022-01-31 19:55:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224
[2022-01-31 19:55:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232
[2022-01-31 19:55:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240
[2022-01-31 19:55:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248
[2022-01-31 19:55:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256
[2022-01-31 19:55:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264
[2022-01-31 19:55:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:55:56,367 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 19:55:56,367 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:55:56,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788792545]
[2022-01-31 19:55:56,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [788792545] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:55:56,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:55:56,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82
[2022-01-31 19:55:56,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363528331]
[2022-01-31 19:55:56,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:55:56,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states
[2022-01-31 19:55:56,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:55:56,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants.
[2022-01-31 19:55:56,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=6454, Unknown=0, NotChecked=0, Total=6642
[2022-01-31 19:55:56,368 INFO L87 Difference]: Start difference. First operand 380 states and 406 transitions. Second operand has 82 states, 81 states have (on average 1.9753086419753085) internal successors, (160), 80 states have internal predecessors, (160), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2022-01-31 19:56:05,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:56:05,907 INFO L93 Difference]: Finished difference Result 494 states and 546 transitions.
[2022-01-31 19:56:05,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states.
[2022-01-31 19:56:05,907 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 1.9753086419753085) internal successors, (160), 80 states have internal predecessors, (160), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 276
[2022-01-31 19:56:05,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:56:05,908 INFO L225 Difference]: With dead ends: 494
[2022-01-31 19:56:05,908 INFO L226 Difference]: Without dead ends: 492
[2022-01-31 19:56:05,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9052 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=840, Invalid=33570, Unknown=0, NotChecked=0, Total=34410
[2022-01-31 19:56:05,910 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 189 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 16100 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 16363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 16100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time
[2022-01-31 19:56:05,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 377 Invalid, 16363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 16100 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time]
[2022-01-31 19:56:05,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states.
[2022-01-31 19:56:06,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 381.
[2022-01-31 19:56:06,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 304 states have (on average 1.0164473684210527) internal successors, (309), 306 states have internal predecessors, (309), 50 states have call successors, (50), 27 states have call predecessors, (50), 26 states have return successors, (49), 47 states have call predecessors, (49), 49 states have call successors, (49)
[2022-01-31 19:56:06,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 408 transitions.
[2022-01-31 19:56:06,390 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 408 transitions. Word has length 276
[2022-01-31 19:56:06,390 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:56:06,390 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 408 transitions.
[2022-01-31 19:56:06,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 1.9753086419753085) internal successors, (160), 80 states have internal predecessors, (160), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2022-01-31 19:56:06,390 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 408 transitions.
[2022-01-31 19:56:06,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279
[2022-01-31 19:56:06,391 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:56:06,391 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:56:06,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118
[2022-01-31 19:56:06,391 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:56:06,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:56:06,391 INFO L85 PathProgramCache]: Analyzing trace with hash 545676633, now seen corresponding path program 23 times
[2022-01-31 19:56:06,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:56:06,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25649419]
[2022-01-31 19:56:06,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:56:06,392 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:56:06,392 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:56:06,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:56:06,394 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:56:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:56:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90
[2022-01-31 19:56:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98
[2022-01-31 19:56:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106
[2022-01-31 19:56:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114
[2022-01-31 19:56:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122
[2022-01-31 19:56:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2022-01-31 19:56:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138
[2022-01-31 19:56:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146
[2022-01-31 19:56:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154
[2022-01-31 19:56:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162
[2022-01-31 19:56:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170
[2022-01-31 19:56:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178
[2022-01-31 19:56:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186
[2022-01-31 19:56:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194
[2022-01-31 19:56:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202
[2022-01-31 19:56:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210
[2022-01-31 19:56:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218
[2022-01-31 19:56:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226
[2022-01-31 19:56:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234
[2022-01-31 19:56:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242
[2022-01-31 19:56:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250
[2022-01-31 19:56:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258
[2022-01-31 19:56:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266
[2022-01-31 19:56:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:06,793 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 19:56:06,793 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:56:06,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25649419]
[2022-01-31 19:56:06,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [25649419] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:56:06,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:56:06,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32
[2022-01-31 19:56:06,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480335587]
[2022-01-31 19:56:06,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:56:06,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2022-01-31 19:56:06,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:56:06,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2022-01-31 19:56:06,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=552, Unknown=0, NotChecked=0, Total=992
[2022-01-31 19:56:06,795 INFO L87 Difference]: Start difference. First operand 381 states and 408 transitions. Second operand has 32 states, 32 states have (on average 2.96875) internal successors, (95), 31 states have internal predecessors, (95), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:56:08,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:56:08,304 INFO L93 Difference]: Finished difference Result 776 states and 855 transitions.
[2022-01-31 19:56:08,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2022-01-31 19:56:08,305 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.96875) internal successors, (95), 31 states have internal predecessors, (95), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 278
[2022-01-31 19:56:08,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:56:08,306 INFO L225 Difference]: With dead ends: 776
[2022-01-31 19:56:08,306 INFO L226 Difference]: Without dead ends: 583
[2022-01-31 19:56:08,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1368, Invalid=2292, Unknown=0, NotChecked=0, Total=3660
[2022-01-31 19:56:08,307 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 249 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:56:08,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 21 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:56:08,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states.
[2022-01-31 19:56:08,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 383.
[2022-01-31 19:56:08,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 306 states have (on average 1.0163398692810457) internal successors, (311), 308 states have internal predecessors, (311), 50 states have call successors, (50), 27 states have call predecessors, (50), 26 states have return successors, (49), 47 states have call predecessors, (49), 49 states have call successors, (49)
[2022-01-31 19:56:08,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 410 transitions.
[2022-01-31 19:56:08,776 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 410 transitions. Word has length 278
[2022-01-31 19:56:08,776 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:56:08,776 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 410 transitions.
[2022-01-31 19:56:08,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.96875) internal successors, (95), 31 states have internal predecessors, (95), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:56:08,776 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 410 transitions.
[2022-01-31 19:56:08,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280
[2022-01-31 19:56:08,777 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:56:08,777 INFO L514 BasicCegarLoop]: trace histogram [28, 27, 27, 24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:56:08,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119
[2022-01-31 19:56:08,777 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:56:08,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:56:08,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1911292508, now seen corresponding path program 89 times
[2022-01-31 19:56:08,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:56:08,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700743140]
[2022-01-31 19:56:08,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:56:08,779 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:56:08,779 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:56:08,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:56:08,781 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:56:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:56:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2022-01-31 19:56:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2022-01-31 19:56:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107
[2022-01-31 19:56:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115
[2022-01-31 19:56:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123
[2022-01-31 19:56:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2022-01-31 19:56:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139
[2022-01-31 19:56:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147
[2022-01-31 19:56:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155
[2022-01-31 19:56:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163
[2022-01-31 19:56:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171
[2022-01-31 19:56:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179
[2022-01-31 19:56:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187
[2022-01-31 19:56:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195
[2022-01-31 19:56:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203
[2022-01-31 19:56:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211
[2022-01-31 19:56:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219
[2022-01-31 19:56:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227
[2022-01-31 19:56:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235
[2022-01-31 19:56:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243
[2022-01-31 19:56:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251
[2022-01-31 19:56:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259
[2022-01-31 19:56:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267
[2022-01-31 19:56:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:11,233 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 19:56:11,233 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:56:11,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700743140]
[2022-01-31 19:56:11,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1700743140] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:56:11,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:56:11,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83
[2022-01-31 19:56:11,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708055472]
[2022-01-31 19:56:11,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:56:11,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states
[2022-01-31 19:56:11,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:56:11,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants.
[2022-01-31 19:56:11,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=6614, Unknown=0, NotChecked=0, Total=6806
[2022-01-31 19:56:11,235 INFO L87 Difference]: Start difference. First operand 383 states and 410 transitions. Second operand has 83 states, 82 states have (on average 1.9878048780487805) internal successors, (163), 81 states have internal predecessors, (163), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2022-01-31 19:56:18,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:56:18,524 INFO L93 Difference]: Finished difference Result 395 states and 422 transitions.
[2022-01-31 19:56:18,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states.
[2022-01-31 19:56:18,524 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 1.9878048780487805) internal successors, (163), 81 states have internal predecessors, (163), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 279
[2022-01-31 19:56:18,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:56:18,525 INFO L225 Difference]: With dead ends: 395
[2022-01-31 19:56:18,525 INFO L226 Difference]: Without dead ends: 393
[2022-01-31 19:56:18,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6177 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=661, Invalid=25099, Unknown=0, NotChecked=0, Total=25760
[2022-01-31 19:56:18,527 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 201 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 13106 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 13364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 13106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time
[2022-01-31 19:56:18,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 351 Invalid, 13364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 13106 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time]
[2022-01-31 19:56:18,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states.
[2022-01-31 19:56:18,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 292.
[2022-01-31 19:56:18,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 238 states have (on average 1.0210084033613445) internal successors, (243), 239 states have internal predecessors, (243), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26)
[2022-01-31 19:56:18,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 296 transitions.
[2022-01-31 19:56:18,805 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 296 transitions. Word has length 279
[2022-01-31 19:56:18,805 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:56:18,805 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 296 transitions.
[2022-01-31 19:56:18,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 1.9878048780487805) internal successors, (163), 81 states have internal predecessors, (163), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2022-01-31 19:56:18,806 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 296 transitions.
[2022-01-31 19:56:18,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282
[2022-01-31 19:56:18,806 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:56:18,806 INFO L514 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:56:18,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120
[2022-01-31 19:56:18,807 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:56:18,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:56:18,807 INFO L85 PathProgramCache]: Analyzing trace with hash -221216002, now seen corresponding path program 90 times
[2022-01-31 19:56:18,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:56:18,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207505472]
[2022-01-31 19:56:18,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:56:18,808 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:56:18,808 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:56:18,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:56:18,810 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:56:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:56:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85
[2022-01-31 19:56:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93
[2022-01-31 19:56:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101
[2022-01-31 19:56:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109
[2022-01-31 19:56:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117
[2022-01-31 19:56:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125
[2022-01-31 19:56:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133
[2022-01-31 19:56:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2022-01-31 19:56:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149
[2022-01-31 19:56:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157
[2022-01-31 19:56:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165
[2022-01-31 19:56:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173
[2022-01-31 19:56:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181
[2022-01-31 19:56:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189
[2022-01-31 19:56:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197
[2022-01-31 19:56:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205
[2022-01-31 19:56:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213
[2022-01-31 19:56:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221
[2022-01-31 19:56:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229
[2022-01-31 19:56:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237
[2022-01-31 19:56:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245
[2022-01-31 19:56:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253
[2022-01-31 19:56:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261
[2022-01-31 19:56:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269
[2022-01-31 19:56:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:19,616 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 19:56:19,616 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:56:19,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207505472]
[2022-01-31 19:56:19,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1207505472] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:56:19,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:56:19,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54
[2022-01-31 19:56:19,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371315357]
[2022-01-31 19:56:19,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:56:19,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states
[2022-01-31 19:56:19,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:56:19,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants.
[2022-01-31 19:56:19,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=2155, Unknown=0, NotChecked=0, Total=2862
[2022-01-31 19:56:19,617 INFO L87 Difference]: Start difference. First operand 292 states and 296 transitions. Second operand has 54 states, 54 states have (on average 2.962962962962963) internal successors, (160), 53 states have internal predecessors, (160), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25)
[2022-01-31 19:56:21,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:56:21,438 INFO L93 Difference]: Finished difference Result 400 states and 428 transitions.
[2022-01-31 19:56:21,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states.
[2022-01-31 19:56:21,439 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.962962962962963) internal successors, (160), 53 states have internal predecessors, (160), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 281
[2022-01-31 19:56:21,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:56:21,439 INFO L225 Difference]: With dead ends: 400
[2022-01-31 19:56:21,439 INFO L226 Difference]: Without dead ends: 292
[2022-01-31 19:56:21,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2546 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2163, Invalid=8757, Unknown=0, NotChecked=0, Total=10920
[2022-01-31 19:56:21,440 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 103 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 19:56:21,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 92 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 19:56:21,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states.
[2022-01-31 19:56:21,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292.
[2022-01-31 19:56:21,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 238 states have (on average 1.0168067226890756) internal successors, (242), 239 states have internal predecessors, (242), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26)
[2022-01-31 19:56:21,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 295 transitions.
[2022-01-31 19:56:21,725 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 295 transitions. Word has length 281
[2022-01-31 19:56:21,725 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:56:21,725 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 295 transitions.
[2022-01-31 19:56:21,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.962962962962963) internal successors, (160), 53 states have internal predecessors, (160), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25)
[2022-01-31 19:56:21,726 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 295 transitions.
[2022-01-31 19:56:21,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285
[2022-01-31 19:56:21,726 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:56:21,726 INFO L514 BasicCegarLoop]: trace histogram [27, 26, 26, 25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:56:21,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121
[2022-01-31 19:56:21,727 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:56:21,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:56:21,727 INFO L85 PathProgramCache]: Analyzing trace with hash 97596186, now seen corresponding path program 91 times
[2022-01-31 19:56:21,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:56:21,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357271033]
[2022-01-31 19:56:21,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:56:21,728 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:56:21,728 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:56:21,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:56:21,730 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:56:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:56:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88
[2022-01-31 19:56:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96
[2022-01-31 19:56:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104
[2022-01-31 19:56:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112
[2022-01-31 19:56:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2022-01-31 19:56:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128
[2022-01-31 19:56:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2022-01-31 19:56:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144
[2022-01-31 19:56:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152
[2022-01-31 19:56:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160
[2022-01-31 19:56:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168
[2022-01-31 19:56:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176
[2022-01-31 19:56:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184
[2022-01-31 19:56:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192
[2022-01-31 19:56:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200
[2022-01-31 19:56:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208
[2022-01-31 19:56:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216
[2022-01-31 19:56:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224
[2022-01-31 19:56:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232
[2022-01-31 19:56:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240
[2022-01-31 19:56:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248
[2022-01-31 19:56:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256
[2022-01-31 19:56:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264
[2022-01-31 19:56:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272
[2022-01-31 19:56:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:24,317 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 19:56:24,317 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:56:24,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357271033]
[2022-01-31 19:56:24,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [357271033] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:56:24,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:56:24,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84
[2022-01-31 19:56:24,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780591286]
[2022-01-31 19:56:24,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:56:24,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states
[2022-01-31 19:56:24,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:56:24,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants.
[2022-01-31 19:56:24,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=6780, Unknown=0, NotChecked=0, Total=6972
[2022-01-31 19:56:24,319 INFO L87 Difference]: Start difference. First operand 292 states and 295 transitions. Second operand has 84 states, 83 states have (on average 1.963855421686747) internal successors, (163), 82 states have internal predecessors, (163), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25)
[2022-01-31 19:56:32,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:56:32,055 INFO L93 Difference]: Finished difference Result 403 states and 431 transitions.
[2022-01-31 19:56:32,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states.
[2022-01-31 19:56:32,056 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 1.963855421686747) internal successors, (163), 82 states have internal predecessors, (163), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 284
[2022-01-31 19:56:32,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:56:32,057 INFO L225 Difference]: With dead ends: 403
[2022-01-31 19:56:32,057 INFO L226 Difference]: Without dead ends: 401
[2022-01-31 19:56:32,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6592 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=626, Invalid=26434, Unknown=0, NotChecked=0, Total=27060
[2022-01-31 19:56:32,058 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 133 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 14042 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 14231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 14042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time
[2022-01-31 19:56:32,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 359 Invalid, 14231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 14042 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time]
[2022-01-31 19:56:32,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states.
[2022-01-31 19:56:32,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 395.
[2022-01-31 19:56:32,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 315 states have (on average 1.0126984126984127) internal successors, (319), 317 states have internal predecessors, (319), 52 states have call successors, (52), 28 states have call predecessors, (52), 27 states have return successors, (51), 49 states have call predecessors, (51), 51 states have call successors, (51)
[2022-01-31 19:56:32,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 422 transitions.
[2022-01-31 19:56:32,578 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 422 transitions. Word has length 284
[2022-01-31 19:56:32,578 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:56:32,578 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 422 transitions.
[2022-01-31 19:56:32,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 1.963855421686747) internal successors, (163), 82 states have internal predecessors, (163), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25)
[2022-01-31 19:56:32,579 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 422 transitions.
[2022-01-31 19:56:32,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288
[2022-01-31 19:56:32,580 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:56:32,580 INFO L514 BasicCegarLoop]: trace histogram [28, 27, 27, 25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:56:32,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122
[2022-01-31 19:56:32,580 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:56:32,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:56:32,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1658797438, now seen corresponding path program 92 times
[2022-01-31 19:56:32,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:56:32,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806593940]
[2022-01-31 19:56:32,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:56:32,581 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:56:32,581 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:56:32,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:56:32,584 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:56:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:56:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2022-01-31 19:56:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2022-01-31 19:56:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107
[2022-01-31 19:56:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115
[2022-01-31 19:56:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123
[2022-01-31 19:56:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2022-01-31 19:56:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139
[2022-01-31 19:56:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147
[2022-01-31 19:56:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155
[2022-01-31 19:56:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163
[2022-01-31 19:56:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171
[2022-01-31 19:56:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179
[2022-01-31 19:56:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187
[2022-01-31 19:56:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195
[2022-01-31 19:56:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203
[2022-01-31 19:56:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211
[2022-01-31 19:56:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219
[2022-01-31 19:56:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227
[2022-01-31 19:56:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235
[2022-01-31 19:56:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243
[2022-01-31 19:56:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251
[2022-01-31 19:56:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259
[2022-01-31 19:56:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267
[2022-01-31 19:56:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275
[2022-01-31 19:56:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:35,143 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 19:56:35,144 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:56:35,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806593940]
[2022-01-31 19:56:35,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [806593940] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:56:35,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:56:35,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85
[2022-01-31 19:56:35,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162606191]
[2022-01-31 19:56:35,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:56:35,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states
[2022-01-31 19:56:35,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:56:35,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants.
[2022-01-31 19:56:35,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=6945, Unknown=0, NotChecked=0, Total=7140
[2022-01-31 19:56:35,145 INFO L87 Difference]: Start difference. First operand 395 states and 422 transitions. Second operand has 85 states, 84 states have (on average 1.9761904761904763) internal successors, (166), 83 states have internal predecessors, (166), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25)
[2022-01-31 19:56:45,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:56:45,269 INFO L93 Difference]: Finished difference Result 513 states and 567 transitions.
[2022-01-31 19:56:45,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states.
[2022-01-31 19:56:45,269 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 84 states have (on average 1.9761904761904763) internal successors, (166), 83 states have internal predecessors, (166), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 287
[2022-01-31 19:56:45,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:56:45,270 INFO L225 Difference]: With dead ends: 513
[2022-01-31 19:56:45,270 INFO L226 Difference]: Without dead ends: 511
[2022-01-31 19:56:45,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9778 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=872, Invalid=36184, Unknown=0, NotChecked=0, Total=37056
[2022-01-31 19:56:45,272 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 249 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 16978 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 17302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 16978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time
[2022-01-31 19:56:45,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 380 Invalid, 17302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 16978 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time]
[2022-01-31 19:56:45,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states.
[2022-01-31 19:56:45,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 396.
[2022-01-31 19:56:45,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 316 states have (on average 1.0158227848101267) internal successors, (321), 318 states have internal predecessors, (321), 52 states have call successors, (52), 28 states have call predecessors, (52), 27 states have return successors, (51), 49 states have call predecessors, (51), 51 states have call successors, (51)
[2022-01-31 19:56:45,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 424 transitions.
[2022-01-31 19:56:45,783 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 424 transitions. Word has length 287
[2022-01-31 19:56:45,783 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:56:45,783 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 424 transitions.
[2022-01-31 19:56:45,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 84 states have (on average 1.9761904761904763) internal successors, (166), 83 states have internal predecessors, (166), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25)
[2022-01-31 19:56:45,783 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 424 transitions.
[2022-01-31 19:56:45,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290
[2022-01-31 19:56:45,784 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:56:45,785 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:56:45,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123
[2022-01-31 19:56:45,785 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:56:45,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:56:45,785 INFO L85 PathProgramCache]: Analyzing trace with hash -291890793, now seen corresponding path program 24 times
[2022-01-31 19:56:45,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:56:45,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469099270]
[2022-01-31 19:56:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:56:45,787 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:56:45,787 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:56:45,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:56:45,789 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:56:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:56:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93
[2022-01-31 19:56:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101
[2022-01-31 19:56:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109
[2022-01-31 19:56:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117
[2022-01-31 19:56:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125
[2022-01-31 19:56:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133
[2022-01-31 19:56:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2022-01-31 19:56:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149
[2022-01-31 19:56:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157
[2022-01-31 19:56:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165
[2022-01-31 19:56:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173
[2022-01-31 19:56:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181
[2022-01-31 19:56:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189
[2022-01-31 19:56:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197
[2022-01-31 19:56:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205
[2022-01-31 19:56:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213
[2022-01-31 19:56:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221
[2022-01-31 19:56:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229
[2022-01-31 19:56:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237
[2022-01-31 19:56:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245
[2022-01-31 19:56:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253
[2022-01-31 19:56:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261
[2022-01-31 19:56:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269
[2022-01-31 19:56:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277
[2022-01-31 19:56:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:46,230 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 19:56:46,230 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:56:46,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469099270]
[2022-01-31 19:56:46,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [469099270] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:56:46,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:56:46,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33
[2022-01-31 19:56:46,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537554755]
[2022-01-31 19:56:46,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:56:46,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states
[2022-01-31 19:56:46,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:56:46,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2022-01-31 19:56:46,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=470, Invalid=586, Unknown=0, NotChecked=0, Total=1056
[2022-01-31 19:56:46,231 INFO L87 Difference]: Start difference. First operand 396 states and 424 transitions. Second operand has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 32 states have internal predecessors, (98), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:56:47,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:56:47,872 INFO L93 Difference]: Finished difference Result 807 states and 889 transitions.
[2022-01-31 19:56:47,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2022-01-31 19:56:47,873 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 32 states have internal predecessors, (98), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 289
[2022-01-31 19:56:47,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:56:47,874 INFO L225 Difference]: With dead ends: 807
[2022-01-31 19:56:47,874 INFO L226 Difference]: Without dead ends: 606
[2022-01-31 19:56:47,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1460, Invalid=2446, Unknown=0, NotChecked=0, Total=3906
[2022-01-31 19:56:47,875 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 254 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:56:47,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 29 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:56:47,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states.
[2022-01-31 19:56:48,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 398.
[2022-01-31 19:56:48,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 318 states have (on average 1.0157232704402517) internal successors, (323), 320 states have internal predecessors, (323), 52 states have call successors, (52), 28 states have call predecessors, (52), 27 states have return successors, (51), 49 states have call predecessors, (51), 51 states have call successors, (51)
[2022-01-31 19:56:48,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 426 transitions.
[2022-01-31 19:56:48,395 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 426 transitions. Word has length 289
[2022-01-31 19:56:48,395 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:56:48,395 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 426 transitions.
[2022-01-31 19:56:48,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 32 states have internal predecessors, (98), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:56:48,395 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 426 transitions.
[2022-01-31 19:56:48,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291
[2022-01-31 19:56:48,396 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:56:48,396 INFO L514 BasicCegarLoop]: trace histogram [29, 28, 28, 25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:56:48,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124
[2022-01-31 19:56:48,396 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:56:48,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:56:48,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1204447386, now seen corresponding path program 93 times
[2022-01-31 19:56:48,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:56:48,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552111667]
[2022-01-31 19:56:48,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:56:48,398 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:56:48,398 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:56:48,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:56:48,401 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:56:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:56:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94
[2022-01-31 19:56:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102
[2022-01-31 19:56:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110
[2022-01-31 19:56:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118
[2022-01-31 19:56:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126
[2022-01-31 19:56:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2022-01-31 19:56:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142
[2022-01-31 19:56:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150
[2022-01-31 19:56:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158
[2022-01-31 19:56:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166
[2022-01-31 19:56:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174
[2022-01-31 19:56:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182
[2022-01-31 19:56:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190
[2022-01-31 19:56:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198
[2022-01-31 19:56:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206
[2022-01-31 19:56:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214
[2022-01-31 19:56:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222
[2022-01-31 19:56:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230
[2022-01-31 19:56:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238
[2022-01-31 19:56:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246
[2022-01-31 19:56:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254
[2022-01-31 19:56:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262
[2022-01-31 19:56:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270
[2022-01-31 19:56:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278
[2022-01-31 19:56:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:56:51,056 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 19:56:51,057 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:56:51,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552111667]
[2022-01-31 19:56:51,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [552111667] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:56:51,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:56:51,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86
[2022-01-31 19:56:51,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085491184]
[2022-01-31 19:56:51,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:56:51,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states
[2022-01-31 19:56:51,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:56:51,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants.
[2022-01-31 19:56:51,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=7111, Unknown=0, NotChecked=0, Total=7310
[2022-01-31 19:56:51,058 INFO L87 Difference]: Start difference. First operand 398 states and 426 transitions. Second operand has 86 states, 85 states have (on average 1.988235294117647) internal successors, (169), 84 states have internal predecessors, (169), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25)
[2022-01-31 19:56:59,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:56:59,138 INFO L93 Difference]: Finished difference Result 410 states and 438 transitions.
[2022-01-31 19:56:59,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states.
[2022-01-31 19:56:59,139 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 1.988235294117647) internal successors, (169), 84 states have internal predecessors, (169), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 290
[2022-01-31 19:56:59,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:56:59,140 INFO L225 Difference]: With dead ends: 410
[2022-01-31 19:56:59,140 INFO L226 Difference]: Without dead ends: 408
[2022-01-31 19:56:59,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6671 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=686, Invalid=27036, Unknown=0, NotChecked=0, Total=27722
[2022-01-31 19:56:59,141 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 152 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 14586 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 14803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 14586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2022-01-31 19:56:59,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 376 Invalid, 14803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 14586 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2022-01-31 19:56:59,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states.
[2022-01-31 19:56:59,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 303.
[2022-01-31 19:56:59,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 247 states have (on average 1.0202429149797572) internal successors, (252), 248 states have internal predecessors, (252), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27)
[2022-01-31 19:56:59,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 307 transitions.
[2022-01-31 19:56:59,453 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 307 transitions. Word has length 290
[2022-01-31 19:56:59,453 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:56:59,453 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 307 transitions.
[2022-01-31 19:56:59,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 1.988235294117647) internal successors, (169), 84 states have internal predecessors, (169), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25)
[2022-01-31 19:56:59,453 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 307 transitions.
[2022-01-31 19:56:59,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293
[2022-01-31 19:56:59,454 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:56:59,454 INFO L514 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:56:59,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125
[2022-01-31 19:56:59,454 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:56:59,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:56:59,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1344445684, now seen corresponding path program 94 times
[2022-01-31 19:56:59,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:56:59,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646819476]
[2022-01-31 19:56:59,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:56:59,456 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:56:59,456 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:56:59,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:56:59,460 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:56:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:57:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88
[2022-01-31 19:57:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96
[2022-01-31 19:57:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104
[2022-01-31 19:57:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112
[2022-01-31 19:57:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2022-01-31 19:57:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128
[2022-01-31 19:57:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2022-01-31 19:57:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144
[2022-01-31 19:57:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152
[2022-01-31 19:57:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160
[2022-01-31 19:57:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168
[2022-01-31 19:57:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176
[2022-01-31 19:57:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184
[2022-01-31 19:57:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192
[2022-01-31 19:57:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200
[2022-01-31 19:57:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208
[2022-01-31 19:57:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216
[2022-01-31 19:57:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224
[2022-01-31 19:57:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232
[2022-01-31 19:57:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240
[2022-01-31 19:57:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248
[2022-01-31 19:57:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256
[2022-01-31 19:57:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264
[2022-01-31 19:57:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272
[2022-01-31 19:57:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280
[2022-01-31 19:57:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:00,308 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 19:57:00,308 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:57:00,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646819476]
[2022-01-31 19:57:00,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [646819476] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:57:00,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:57:00,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56
[2022-01-31 19:57:00,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623360632]
[2022-01-31 19:57:00,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:57:00,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states
[2022-01-31 19:57:00,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:57:00,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants.
[2022-01-31 19:57:00,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=761, Invalid=2319, Unknown=0, NotChecked=0, Total=3080
[2022-01-31 19:57:00,310 INFO L87 Difference]: Start difference. First operand 303 states and 307 transitions. Second operand has 56 states, 56 states have (on average 2.9642857142857144) internal successors, (166), 55 states have internal predecessors, (166), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2022-01-31 19:57:02,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:57:02,383 INFO L93 Difference]: Finished difference Result 415 states and 444 transitions.
[2022-01-31 19:57:02,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states.
[2022-01-31 19:57:02,383 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.9642857142857144) internal successors, (166), 55 states have internal predecessors, (166), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 292
[2022-01-31 19:57:02,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:57:02,384 INFO L225 Difference]: With dead ends: 415
[2022-01-31 19:57:02,384 INFO L226 Difference]: Without dead ends: 303
[2022-01-31 19:57:02,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2752 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2327, Invalid=9445, Unknown=0, NotChecked=0, Total=11772
[2022-01-31 19:57:02,385 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 106 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-01-31 19:57:02,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 84 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2022-01-31 19:57:02,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states.
[2022-01-31 19:57:02,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303.
[2022-01-31 19:57:02,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 247 states have (on average 1.0161943319838056) internal successors, (251), 248 states have internal predecessors, (251), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27)
[2022-01-31 19:57:02,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 306 transitions.
[2022-01-31 19:57:02,692 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 306 transitions. Word has length 292
[2022-01-31 19:57:02,692 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:57:02,693 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 306 transitions.
[2022-01-31 19:57:02,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.9642857142857144) internal successors, (166), 55 states have internal predecessors, (166), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2022-01-31 19:57:02,693 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 306 transitions.
[2022-01-31 19:57:02,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296
[2022-01-31 19:57:02,694 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:57:02,694 INFO L514 BasicCegarLoop]: trace histogram [28, 27, 27, 26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:57:02,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126
[2022-01-31 19:57:02,694 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:57:02,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:57:02,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1447166808, now seen corresponding path program 95 times
[2022-01-31 19:57:02,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:57:02,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006586773]
[2022-01-31 19:57:02,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:57:02,696 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:57:02,696 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:57:02,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:57:02,699 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:57:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:57:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2022-01-31 19:57:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2022-01-31 19:57:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107
[2022-01-31 19:57:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115
[2022-01-31 19:57:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123
[2022-01-31 19:57:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2022-01-31 19:57:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139
[2022-01-31 19:57:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147
[2022-01-31 19:57:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155
[2022-01-31 19:57:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163
[2022-01-31 19:57:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171
[2022-01-31 19:57:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179
[2022-01-31 19:57:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187
[2022-01-31 19:57:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195
[2022-01-31 19:57:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203
[2022-01-31 19:57:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211
[2022-01-31 19:57:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219
[2022-01-31 19:57:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227
[2022-01-31 19:57:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235
[2022-01-31 19:57:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243
[2022-01-31 19:57:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251
[2022-01-31 19:57:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259
[2022-01-31 19:57:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267
[2022-01-31 19:57:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275
[2022-01-31 19:57:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283
[2022-01-31 19:57:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:05,374 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 19:57:05,375 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:57:05,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006586773]
[2022-01-31 19:57:05,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1006586773] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:57:05,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:57:05,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87
[2022-01-31 19:57:05,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019887431]
[2022-01-31 19:57:05,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:57:05,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states
[2022-01-31 19:57:05,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:57:05,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants.
[2022-01-31 19:57:05,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=7283, Unknown=0, NotChecked=0, Total=7482
[2022-01-31 19:57:05,380 INFO L87 Difference]: Start difference. First operand 303 states and 306 transitions. Second operand has 87 states, 86 states have (on average 1.9651162790697674) internal successors, (169), 85 states have internal predecessors, (169), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2022-01-31 19:57:13,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:57:13,651 INFO L93 Difference]: Finished difference Result 418 states and 447 transitions.
[2022-01-31 19:57:13,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states.
[2022-01-31 19:57:13,652 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 86 states have (on average 1.9651162790697674) internal successors, (169), 85 states have internal predecessors, (169), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 295
[2022-01-31 19:57:13,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:57:13,653 INFO L225 Difference]: With dead ends: 418
[2022-01-31 19:57:13,653 INFO L226 Difference]: Without dead ends: 416
[2022-01-31 19:57:13,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7102 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=649, Invalid=28421, Unknown=0, NotChecked=0, Total=29070
[2022-01-31 19:57:13,655 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 137 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 15010 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 15206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 15010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2022-01-31 19:57:13,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 370 Invalid, 15206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 15010 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2022-01-31 19:57:13,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states.
[2022-01-31 19:57:14,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 410.
[2022-01-31 19:57:14,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 327 states have (on average 1.0122324159021407) internal successors, (331), 329 states have internal predecessors, (331), 54 states have call successors, (54), 29 states have call predecessors, (54), 28 states have return successors, (53), 51 states have call predecessors, (53), 53 states have call successors, (53)
[2022-01-31 19:57:14,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 438 transitions.
[2022-01-31 19:57:14,204 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 438 transitions. Word has length 295
[2022-01-31 19:57:14,204 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:57:14,204 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 438 transitions.
[2022-01-31 19:57:14,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 86 states have (on average 1.9651162790697674) internal successors, (169), 85 states have internal predecessors, (169), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2022-01-31 19:57:14,204 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 438 transitions.
[2022-01-31 19:57:14,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299
[2022-01-31 19:57:14,205 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:57:14,205 INFO L514 BasicCegarLoop]: trace histogram [29, 28, 28, 26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:57:14,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127
[2022-01-31 19:57:14,205 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:57:14,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:57:14,206 INFO L85 PathProgramCache]: Analyzing trace with hash -699510156, now seen corresponding path program 96 times
[2022-01-31 19:57:14,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:57:14,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395832646]
[2022-01-31 19:57:14,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:57:14,207 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:57:14,207 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:57:14,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:57:14,209 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:57:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:57:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94
[2022-01-31 19:57:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102
[2022-01-31 19:57:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110
[2022-01-31 19:57:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118
[2022-01-31 19:57:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126
[2022-01-31 19:57:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2022-01-31 19:57:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142
[2022-01-31 19:57:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150
[2022-01-31 19:57:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158
[2022-01-31 19:57:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166
[2022-01-31 19:57:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174
[2022-01-31 19:57:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182
[2022-01-31 19:57:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190
[2022-01-31 19:57:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198
[2022-01-31 19:57:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206
[2022-01-31 19:57:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214
[2022-01-31 19:57:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222
[2022-01-31 19:57:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230
[2022-01-31 19:57:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238
[2022-01-31 19:57:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246
[2022-01-31 19:57:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254
[2022-01-31 19:57:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262
[2022-01-31 19:57:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270
[2022-01-31 19:57:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278
[2022-01-31 19:57:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286
[2022-01-31 19:57:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:16,957 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 19:57:16,957 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:57:16,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395832646]
[2022-01-31 19:57:16,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [395832646] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:57:16,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:57:16,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88
[2022-01-31 19:57:16,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017532415]
[2022-01-31 19:57:16,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:57:16,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states
[2022-01-31 19:57:16,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:57:16,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants.
[2022-01-31 19:57:16,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=7454, Unknown=0, NotChecked=0, Total=7656
[2022-01-31 19:57:16,959 INFO L87 Difference]: Start difference. First operand 410 states and 438 transitions. Second operand has 88 states, 87 states have (on average 1.9770114942528736) internal successors, (172), 86 states have internal predecessors, (172), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2022-01-31 19:57:28,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:57:28,127 INFO L93 Difference]: Finished difference Result 532 states and 588 transitions.
[2022-01-31 19:57:28,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states.
[2022-01-31 19:57:28,127 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 1.9770114942528736) internal successors, (172), 86 states have internal predecessors, (172), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 298
[2022-01-31 19:57:28,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:57:28,128 INFO L225 Difference]: With dead ends: 532
[2022-01-31 19:57:28,128 INFO L226 Difference]: Without dead ends: 530
[2022-01-31 19:57:28,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10532 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=904, Invalid=38896, Unknown=0, NotChecked=0, Total=39800
[2022-01-31 19:57:28,131 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 257 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 19119 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 19455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 19119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time
[2022-01-31 19:57:28,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 411 Invalid, 19455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 19119 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time]
[2022-01-31 19:57:28,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states.
[2022-01-31 19:57:28,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 411.
[2022-01-31 19:57:28,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 328 states have (on average 1.0152439024390243) internal successors, (333), 330 states have internal predecessors, (333), 54 states have call successors, (54), 29 states have call predecessors, (54), 28 states have return successors, (53), 51 states have call predecessors, (53), 53 states have call successors, (53)
[2022-01-31 19:57:28,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 440 transitions.
[2022-01-31 19:57:28,686 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 440 transitions. Word has length 298
[2022-01-31 19:57:28,686 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:57:28,686 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 440 transitions.
[2022-01-31 19:57:28,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 1.9770114942528736) internal successors, (172), 86 states have internal predecessors, (172), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2022-01-31 19:57:28,686 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 440 transitions.
[2022-01-31 19:57:28,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301
[2022-01-31 19:57:28,687 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:57:28,687 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 29, 26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:57:28,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128
[2022-01-31 19:57:28,687 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:57:28,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:57:28,688 INFO L85 PathProgramCache]: Analyzing trace with hash -2142982515, now seen corresponding path program 25 times
[2022-01-31 19:57:28,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:57:28,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440550660]
[2022-01-31 19:57:28,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:57:28,689 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:57:28,689 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:57:28,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:57:28,691 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:57:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:57:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96
[2022-01-31 19:57:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104
[2022-01-31 19:57:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112
[2022-01-31 19:57:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2022-01-31 19:57:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128
[2022-01-31 19:57:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2022-01-31 19:57:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144
[2022-01-31 19:57:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152
[2022-01-31 19:57:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160
[2022-01-31 19:57:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168
[2022-01-31 19:57:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176
[2022-01-31 19:57:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184
[2022-01-31 19:57:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192
[2022-01-31 19:57:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200
[2022-01-31 19:57:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208
[2022-01-31 19:57:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216
[2022-01-31 19:57:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224
[2022-01-31 19:57:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232
[2022-01-31 19:57:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240
[2022-01-31 19:57:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248
[2022-01-31 19:57:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256
[2022-01-31 19:57:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264
[2022-01-31 19:57:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272
[2022-01-31 19:57:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280
[2022-01-31 19:57:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288
[2022-01-31 19:57:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:29,135 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 19:57:29,135 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:57:29,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440550660]
[2022-01-31 19:57:29,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1440550660] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:57:29,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:57:29,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34
[2022-01-31 19:57:29,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115432788]
[2022-01-31 19:57:29,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:57:29,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states
[2022-01-31 19:57:29,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:57:29,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2022-01-31 19:57:29,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=501, Invalid=621, Unknown=0, NotChecked=0, Total=1122
[2022-01-31 19:57:29,136 INFO L87 Difference]: Start difference. First operand 411 states and 440 transitions. Second operand has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 33 states have internal predecessors, (101), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:57:30,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:57:30,876 INFO L93 Difference]: Finished difference Result 838 states and 923 transitions.
[2022-01-31 19:57:30,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2022-01-31 19:57:30,876 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), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 300
[2022-01-31 19:57:30,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:57:30,877 INFO L225 Difference]: With dead ends: 838
[2022-01-31 19:57:30,877 INFO L226 Difference]: Without dead ends: 629
[2022-01-31 19:57:30,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1555, Invalid=2605, Unknown=0, NotChecked=0, Total=4160
[2022-01-31 19:57:30,878 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 254 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 19:57:30,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 25 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 19:57:30,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states.
[2022-01-31 19:57:31,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 413.
[2022-01-31 19:57:31,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 330 states have (on average 1.0151515151515151) internal successors, (335), 332 states have internal predecessors, (335), 54 states have call successors, (54), 29 states have call predecessors, (54), 28 states have return successors, (53), 51 states have call predecessors, (53), 53 states have call successors, (53)
[2022-01-31 19:57:31,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 442 transitions.
[2022-01-31 19:57:31,433 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 442 transitions. Word has length 300
[2022-01-31 19:57:31,433 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:57:31,433 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 442 transitions.
[2022-01-31 19:57:31,433 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), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:57:31,433 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 442 transitions.
[2022-01-31 19:57:31,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302
[2022-01-31 19:57:31,434 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:57:31,434 INFO L514 BasicCegarLoop]: trace histogram [30, 29, 29, 26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:57:31,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129
[2022-01-31 19:57:31,434 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:57:31,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:57:31,434 INFO L85 PathProgramCache]: Analyzing trace with hash -289907240, now seen corresponding path program 97 times
[2022-01-31 19:57:31,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:57:31,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915380788]
[2022-01-31 19:57:31,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:57:31,436 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:57:31,436 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:57:31,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:57:31,439 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:57:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:57:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97
[2022-01-31 19:57:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2022-01-31 19:57:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113
[2022-01-31 19:57:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2022-01-31 19:57:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2022-01-31 19:57:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137
[2022-01-31 19:57:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145
[2022-01-31 19:57:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153
[2022-01-31 19:57:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161
[2022-01-31 19:57:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169
[2022-01-31 19:57:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177
[2022-01-31 19:57:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185
[2022-01-31 19:57:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193
[2022-01-31 19:57:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201
[2022-01-31 19:57:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209
[2022-01-31 19:57:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217
[2022-01-31 19:57:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225
[2022-01-31 19:57:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233
[2022-01-31 19:57:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241
[2022-01-31 19:57:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249
[2022-01-31 19:57:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257
[2022-01-31 19:57:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265
[2022-01-31 19:57:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273
[2022-01-31 19:57:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281
[2022-01-31 19:57:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289
[2022-01-31 19:57:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:34,288 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 19:57:34,288 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:57:34,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915380788]
[2022-01-31 19:57:34,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1915380788] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:57:34,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:57:34,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89
[2022-01-31 19:57:34,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211630548]
[2022-01-31 19:57:34,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:57:34,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states
[2022-01-31 19:57:34,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:57:34,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants.
[2022-01-31 19:57:34,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=7626, Unknown=0, NotChecked=0, Total=7832
[2022-01-31 19:57:34,290 INFO L87 Difference]: Start difference. First operand 413 states and 442 transitions. Second operand has 89 states, 88 states have (on average 1.9886363636363635) internal successors, (175), 87 states have internal predecessors, (175), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2022-01-31 19:57:42,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:57:42,744 INFO L93 Difference]: Finished difference Result 425 states and 454 transitions.
[2022-01-31 19:57:42,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states.
[2022-01-31 19:57:42,745 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 1.9886363636363635) internal successors, (175), 87 states have internal predecessors, (175), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 301
[2022-01-31 19:57:42,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:57:42,746 INFO L225 Difference]: With dead ends: 425
[2022-01-31 19:57:42,746 INFO L226 Difference]: Without dead ends: 423
[2022-01-31 19:57:42,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7184 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=711, Invalid=29045, Unknown=0, NotChecked=0, Total=29756
[2022-01-31 19:57:42,747 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 157 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 15459 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 15684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 15459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:57:42,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 383 Invalid, 15684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 15459 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2022-01-31 19:57:42,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states.
[2022-01-31 19:57:43,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 314.
[2022-01-31 19:57:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 256 states have (on average 1.01953125) internal successors, (261), 257 states have internal predecessors, (261), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28)
[2022-01-31 19:57:43,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 318 transitions.
[2022-01-31 19:57:43,075 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 318 transitions. Word has length 301
[2022-01-31 19:57:43,075 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:57:43,075 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 318 transitions.
[2022-01-31 19:57:43,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 88 states have (on average 1.9886363636363635) internal successors, (175), 87 states have internal predecessors, (175), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2022-01-31 19:57:43,076 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 318 transitions.
[2022-01-31 19:57:43,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304
[2022-01-31 19:57:43,076 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:57:43,077 INFO L514 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:57:43,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130
[2022-01-31 19:57:43,077 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:57:43,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:57:43,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1286189262, now seen corresponding path program 98 times
[2022-01-31 19:57:43,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:57:43,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361470087]
[2022-01-31 19:57:43,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:57:43,078 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:57:43,078 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:57:43,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:57:43,080 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:57:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:57:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2022-01-31 19:57:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2022-01-31 19:57:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107
[2022-01-31 19:57:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115
[2022-01-31 19:57:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123
[2022-01-31 19:57:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2022-01-31 19:57:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139
[2022-01-31 19:57:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147
[2022-01-31 19:57:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155
[2022-01-31 19:57:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163
[2022-01-31 19:57:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171
[2022-01-31 19:57:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179
[2022-01-31 19:57:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187
[2022-01-31 19:57:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195
[2022-01-31 19:57:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203
[2022-01-31 19:57:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211
[2022-01-31 19:57:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219
[2022-01-31 19:57:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227
[2022-01-31 19:57:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235
[2022-01-31 19:57:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243
[2022-01-31 19:57:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251
[2022-01-31 19:57:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259
[2022-01-31 19:57:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267
[2022-01-31 19:57:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275
[2022-01-31 19:57:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283
[2022-01-31 19:57:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291
[2022-01-31 19:57:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:43,990 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 19:57:43,990 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:57:43,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361470087]
[2022-01-31 19:57:43,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [361470087] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:57:43,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:57:43,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58
[2022-01-31 19:57:43,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568926646]
[2022-01-31 19:57:43,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:57:43,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states
[2022-01-31 19:57:43,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:57:43,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants.
[2022-01-31 19:57:43,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=817, Invalid=2489, Unknown=0, NotChecked=0, Total=3306
[2022-01-31 19:57:43,992 INFO L87 Difference]: Start difference. First operand 314 states and 318 transitions. Second operand has 58 states, 58 states have (on average 2.9655172413793105) internal successors, (172), 57 states have internal predecessors, (172), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27)
[2022-01-31 19:57:46,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:57:46,092 INFO L93 Difference]: Finished difference Result 430 states and 460 transitions.
[2022-01-31 19:57:46,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states.
[2022-01-31 19:57:46,093 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.9655172413793105) internal successors, (172), 57 states have internal predecessors, (172), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 303
[2022-01-31 19:57:46,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:57:46,093 INFO L225 Difference]: With dead ends: 430
[2022-01-31 19:57:46,093 INFO L226 Difference]: Without dead ends: 314
[2022-01-31 19:57:46,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2966 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2497, Invalid=10159, Unknown=0, NotChecked=0, Total=12656
[2022-01-31 19:57:46,094 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 109 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-31 19:57:46,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 111 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-31 19:57:46,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states.
[2022-01-31 19:57:46,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314.
[2022-01-31 19:57:46,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 256 states have (on average 1.015625) internal successors, (260), 257 states have internal predecessors, (260), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28)
[2022-01-31 19:57:46,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 317 transitions.
[2022-01-31 19:57:46,418 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 317 transitions. Word has length 303
[2022-01-31 19:57:46,418 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:57:46,418 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 317 transitions.
[2022-01-31 19:57:46,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.9655172413793105) internal successors, (172), 57 states have internal predecessors, (172), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27)
[2022-01-31 19:57:46,418 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 317 transitions.
[2022-01-31 19:57:46,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307
[2022-01-31 19:57:46,419 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:57:46,419 INFO L514 BasicCegarLoop]: trace histogram [29, 28, 28, 27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:57:46,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131
[2022-01-31 19:57:46,419 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:57:46,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:57:46,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1121992114, now seen corresponding path program 99 times
[2022-01-31 19:57:46,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:57:46,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234515716]
[2022-01-31 19:57:46,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:57:46,420 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:57:46,420 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:57:46,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:57:46,423 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:57:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:57:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94
[2022-01-31 19:57:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102
[2022-01-31 19:57:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110
[2022-01-31 19:57:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118
[2022-01-31 19:57:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126
[2022-01-31 19:57:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2022-01-31 19:57:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142
[2022-01-31 19:57:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150
[2022-01-31 19:57:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158
[2022-01-31 19:57:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166
[2022-01-31 19:57:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174
[2022-01-31 19:57:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182
[2022-01-31 19:57:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190
[2022-01-31 19:57:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198
[2022-01-31 19:57:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206
[2022-01-31 19:57:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214
[2022-01-31 19:57:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222
[2022-01-31 19:57:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230
[2022-01-31 19:57:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238
[2022-01-31 19:57:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246
[2022-01-31 19:57:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254
[2022-01-31 19:57:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262
[2022-01-31 19:57:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270
[2022-01-31 19:57:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278
[2022-01-31 19:57:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286
[2022-01-31 19:57:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294
[2022-01-31 19:57:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:57:49,261 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 19:57:49,261 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:57:49,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234515716]
[2022-01-31 19:57:49,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1234515716] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:57:49,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:57:49,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90
[2022-01-31 19:57:49,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537382265]
[2022-01-31 19:57:49,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:57:49,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states
[2022-01-31 19:57:49,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:57:49,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants.
[2022-01-31 19:57:49,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=7804, Unknown=0, NotChecked=0, Total=8010
[2022-01-31 19:57:49,263 INFO L87 Difference]: Start difference. First operand 314 states and 317 transitions. Second operand has 90 states, 89 states have (on average 1.9662921348314606) internal successors, (175), 88 states have internal predecessors, (175), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27)
[2022-01-31 19:57:58,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:57:58,067 INFO L93 Difference]: Finished difference Result 433 states and 463 transitions.
[2022-01-31 19:57:58,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states.
[2022-01-31 19:57:58,067 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 1.9662921348314606) internal successors, (175), 88 states have internal predecessors, (175), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 306
[2022-01-31 19:57:58,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:57:58,068 INFO L225 Difference]: With dead ends: 433
[2022-01-31 19:57:58,068 INFO L226 Difference]: Without dead ends: 431
[2022-01-31 19:57:58,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7631 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=672, Invalid=30480, Unknown=0, NotChecked=0, Total=31152
[2022-01-31 19:57:58,069 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 141 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 16118 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 16321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 16118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time
[2022-01-31 19:57:58,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 382 Invalid, 16321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 16118 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time]
[2022-01-31 19:57:58,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states.
[2022-01-31 19:57:58,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 425.
[2022-01-31 19:57:58,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 339 states have (on average 1.0117994100294985) internal successors, (343), 341 states have internal predecessors, (343), 56 states have call successors, (56), 30 states have call predecessors, (56), 29 states have return successors, (55), 53 states have call predecessors, (55), 55 states have call successors, (55)
[2022-01-31 19:57:58,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 454 transitions.
[2022-01-31 19:57:58,669 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 454 transitions. Word has length 306
[2022-01-31 19:57:58,669 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:57:58,669 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 454 transitions.
[2022-01-31 19:57:58,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 1.9662921348314606) internal successors, (175), 88 states have internal predecessors, (175), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27)
[2022-01-31 19:57:58,670 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 454 transitions.
[2022-01-31 19:57:58,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310
[2022-01-31 19:57:58,671 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:57:58,671 INFO L514 BasicCegarLoop]: trace histogram [30, 29, 29, 27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:57:58,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132
[2022-01-31 19:57:58,671 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:57:58,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:57:58,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1492506190, now seen corresponding path program 100 times
[2022-01-31 19:57:58,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:57:58,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887947708]
[2022-01-31 19:57:58,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:57:58,672 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:57:58,672 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:57:58,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:57:58,674 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:57:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:58:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97
[2022-01-31 19:58:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2022-01-31 19:58:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113
[2022-01-31 19:58:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2022-01-31 19:58:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2022-01-31 19:58:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137
[2022-01-31 19:58:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145
[2022-01-31 19:58:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153
[2022-01-31 19:58:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161
[2022-01-31 19:58:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169
[2022-01-31 19:58:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177
[2022-01-31 19:58:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185
[2022-01-31 19:58:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193
[2022-01-31 19:58:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201
[2022-01-31 19:58:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209
[2022-01-31 19:58:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217
[2022-01-31 19:58:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225
[2022-01-31 19:58:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233
[2022-01-31 19:58:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241
[2022-01-31 19:58:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249
[2022-01-31 19:58:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257
[2022-01-31 19:58:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265
[2022-01-31 19:58:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273
[2022-01-31 19:58:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281
[2022-01-31 19:58:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289
[2022-01-31 19:58:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297
[2022-01-31 19:58:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:01,579 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 19:58:01,579 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:58:01,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887947708]
[2022-01-31 19:58:01,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1887947708] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:58:01,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:58:01,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91
[2022-01-31 19:58:01,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029097750]
[2022-01-31 19:58:01,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:58:01,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states
[2022-01-31 19:58:01,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:58:01,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants.
[2022-01-31 19:58:01,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=7981, Unknown=0, NotChecked=0, Total=8190
[2022-01-31 19:58:01,580 INFO L87 Difference]: Start difference. First operand 425 states and 454 transitions. Second operand has 91 states, 90 states have (on average 1.9777777777777779) internal successors, (178), 89 states have internal predecessors, (178), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27)
[2022-01-31 19:58:12,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:58:12,833 INFO L93 Difference]: Finished difference Result 551 states and 609 transitions.
[2022-01-31 19:58:12,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states.
[2022-01-31 19:58:12,833 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 1.9777777777777779) internal successors, (178), 89 states have internal predecessors, (178), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 309
[2022-01-31 19:58:12,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:58:12,834 INFO L225 Difference]: With dead ends: 551
[2022-01-31 19:58:12,834 INFO L226 Difference]: Without dead ends: 549
[2022-01-31 19:58:12,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11314 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=936, Invalid=41706, Unknown=0, NotChecked=0, Total=42642
[2022-01-31 19:58:12,836 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 207 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 18602 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 18895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 18602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time
[2022-01-31 19:58:12,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 394 Invalid, 18895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 18602 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time]
[2022-01-31 19:58:12,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states.
[2022-01-31 19:58:13,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 426.
[2022-01-31 19:58:13,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 340 states have (on average 1.0147058823529411) internal successors, (345), 342 states have internal predecessors, (345), 56 states have call successors, (56), 30 states have call predecessors, (56), 29 states have return successors, (55), 53 states have call predecessors, (55), 55 states have call successors, (55)
[2022-01-31 19:58:13,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 456 transitions.
[2022-01-31 19:58:13,437 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 456 transitions. Word has length 309
[2022-01-31 19:58:13,437 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:58:13,437 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 456 transitions.
[2022-01-31 19:58:13,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 1.9777777777777779) internal successors, (178), 89 states have internal predecessors, (178), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27)
[2022-01-31 19:58:13,437 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 456 transitions.
[2022-01-31 19:58:13,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312
[2022-01-31 19:58:13,438 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:58:13,439 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:58:13,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133
[2022-01-31 19:58:13,439 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:58:13,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:58:13,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1016533963, now seen corresponding path program 26 times
[2022-01-31 19:58:13,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:58:13,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705284118]
[2022-01-31 19:58:13,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:58:13,440 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:58:13,440 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:58:13,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:58:13,442 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:58:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:58:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2022-01-31 19:58:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107
[2022-01-31 19:58:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115
[2022-01-31 19:58:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123
[2022-01-31 19:58:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2022-01-31 19:58:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139
[2022-01-31 19:58:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147
[2022-01-31 19:58:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155
[2022-01-31 19:58:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163
[2022-01-31 19:58:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171
[2022-01-31 19:58:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179
[2022-01-31 19:58:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187
[2022-01-31 19:58:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195
[2022-01-31 19:58:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203
[2022-01-31 19:58:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211
[2022-01-31 19:58:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219
[2022-01-31 19:58:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227
[2022-01-31 19:58:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235
[2022-01-31 19:58:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243
[2022-01-31 19:58:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251
[2022-01-31 19:58:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259
[2022-01-31 19:58:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267
[2022-01-31 19:58:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275
[2022-01-31 19:58:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283
[2022-01-31 19:58:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291
[2022-01-31 19:58:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299
[2022-01-31 19:58:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:13,929 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 19:58:13,929 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:58:13,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705284118]
[2022-01-31 19:58:13,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [705284118] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:58:13,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:58:13,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35
[2022-01-31 19:58:13,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251085807]
[2022-01-31 19:58:13,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:58:13,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states
[2022-01-31 19:58:13,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:58:13,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2022-01-31 19:58:13,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=533, Invalid=657, Unknown=0, NotChecked=0, Total=1190
[2022-01-31 19:58:13,931 INFO L87 Difference]: Start difference. First operand 426 states and 456 transitions. Second operand has 35 states, 35 states have (on average 2.9714285714285715) internal successors, (104), 34 states have internal predecessors, (104), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:58:15,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:58:15,843 INFO L93 Difference]: Finished difference Result 869 states and 957 transitions.
[2022-01-31 19:58:15,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2022-01-31 19:58:15,843 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.9714285714285715) internal successors, (104), 34 states have internal predecessors, (104), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 311
[2022-01-31 19:58:15,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:58:15,845 INFO L225 Difference]: With dead ends: 869
[2022-01-31 19:58:15,845 INFO L226 Difference]: Without dead ends: 652
[2022-01-31 19:58:15,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1653, Invalid=2769, Unknown=0, NotChecked=0, Total=4422
[2022-01-31 19:58:15,850 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 266 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 19:58:15,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 29 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 19:58:15,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states.
[2022-01-31 19:58:16,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 428.
[2022-01-31 19:58:16,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 342 states have (on average 1.0146198830409356) internal successors, (347), 344 states have internal predecessors, (347), 56 states have call successors, (56), 30 states have call predecessors, (56), 29 states have return successors, (55), 53 states have call predecessors, (55), 55 states have call successors, (55)
[2022-01-31 19:58:16,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 458 transitions.
[2022-01-31 19:58:16,580 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 458 transitions. Word has length 311
[2022-01-31 19:58:16,580 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:58:16,580 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 458 transitions.
[2022-01-31 19:58:16,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.9714285714285715) internal successors, (104), 34 states have internal predecessors, (104), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:58:16,581 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 458 transitions.
[2022-01-31 19:58:16,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313
[2022-01-31 19:58:16,582 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:58:16,582 INFO L514 BasicCegarLoop]: trace histogram [31, 30, 30, 27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:58:16,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134
[2022-01-31 19:58:16,582 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:58:16,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:58:16,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1411393586, now seen corresponding path program 101 times
[2022-01-31 19:58:16,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:58:16,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078720456]
[2022-01-31 19:58:16,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:58:16,584 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:58:16,584 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:58:16,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:58:16,587 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:58:16,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:58:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2022-01-31 19:58:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108
[2022-01-31 19:58:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2022-01-31 19:58:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2022-01-31 19:58:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132
[2022-01-31 19:58:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2022-01-31 19:58:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148
[2022-01-31 19:58:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156
[2022-01-31 19:58:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164
[2022-01-31 19:58:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172
[2022-01-31 19:58:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180
[2022-01-31 19:58:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188
[2022-01-31 19:58:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196
[2022-01-31 19:58:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204
[2022-01-31 19:58:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212
[2022-01-31 19:58:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220
[2022-01-31 19:58:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228
[2022-01-31 19:58:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236
[2022-01-31 19:58:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244
[2022-01-31 19:58:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252
[2022-01-31 19:58:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260
[2022-01-31 19:58:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268
[2022-01-31 19:58:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276
[2022-01-31 19:58:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284
[2022-01-31 19:58:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292
[2022-01-31 19:58:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300
[2022-01-31 19:58:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:19,585 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 19:58:19,585 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:58:19,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078720456]
[2022-01-31 19:58:19,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2078720456] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:58:19,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:58:19,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92
[2022-01-31 19:58:19,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654751842]
[2022-01-31 19:58:19,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:58:19,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states
[2022-01-31 19:58:19,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:58:19,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants.
[2022-01-31 19:58:19,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=8159, Unknown=0, NotChecked=0, Total=8372
[2022-01-31 19:58:19,587 INFO L87 Difference]: Start difference. First operand 428 states and 458 transitions. Second operand has 92 states, 91 states have (on average 1.989010989010989) internal successors, (181), 90 states have internal predecessors, (181), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27)
[2022-01-31 19:58:29,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:58:29,007 INFO L93 Difference]: Finished difference Result 440 states and 470 transitions.
[2022-01-31 19:58:29,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states.
[2022-01-31 19:58:29,007 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 1.989010989010989) internal successors, (181), 90 states have internal predecessors, (181), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 312
[2022-01-31 19:58:29,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:58:29,008 INFO L225 Difference]: With dead ends: 440
[2022-01-31 19:58:29,008 INFO L226 Difference]: Without dead ends: 438
[2022-01-31 19:58:29,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7716 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=736, Invalid=31126, Unknown=0, NotChecked=0, Total=31862
[2022-01-31 19:58:29,010 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 281 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 17747 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 18090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 17747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time
[2022-01-31 19:58:29,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 420 Invalid, 18090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 17747 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time]
[2022-01-31 19:58:29,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states.
[2022-01-31 19:58:29,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 325.
[2022-01-31 19:58:29,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 265 states have (on average 1.0188679245283019) internal successors, (270), 266 states have internal predecessors, (270), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29)
[2022-01-31 19:58:29,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 329 transitions.
[2022-01-31 19:58:29,369 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 329 transitions. Word has length 312
[2022-01-31 19:58:29,369 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:58:29,369 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 329 transitions.
[2022-01-31 19:58:29,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 1.989010989010989) internal successors, (181), 90 states have internal predecessors, (181), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27)
[2022-01-31 19:58:29,370 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 329 transitions.
[2022-01-31 19:58:29,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315
[2022-01-31 19:58:29,370 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:58:29,370 INFO L514 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:58:29,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135
[2022-01-31 19:58:29,371 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:58:29,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:58:29,371 INFO L85 PathProgramCache]: Analyzing trace with hash 827897896, now seen corresponding path program 102 times
[2022-01-31 19:58:29,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:58:29,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711999230]
[2022-01-31 19:58:29,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:58:29,372 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:58:29,372 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:58:29,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:58:29,374 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:58:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:58:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94
[2022-01-31 19:58:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102
[2022-01-31 19:58:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110
[2022-01-31 19:58:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118
[2022-01-31 19:58:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126
[2022-01-31 19:58:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2022-01-31 19:58:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142
[2022-01-31 19:58:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150
[2022-01-31 19:58:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158
[2022-01-31 19:58:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166
[2022-01-31 19:58:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174
[2022-01-31 19:58:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182
[2022-01-31 19:58:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190
[2022-01-31 19:58:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198
[2022-01-31 19:58:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206
[2022-01-31 19:58:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214
[2022-01-31 19:58:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222
[2022-01-31 19:58:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230
[2022-01-31 19:58:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238
[2022-01-31 19:58:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246
[2022-01-31 19:58:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254
[2022-01-31 19:58:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262
[2022-01-31 19:58:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270
[2022-01-31 19:58:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278
[2022-01-31 19:58:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286
[2022-01-31 19:58:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294
[2022-01-31 19:58:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302
[2022-01-31 19:58:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:30,333 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 19:58:30,333 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:58:30,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711999230]
[2022-01-31 19:58:30,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [711999230] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:58:30,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:58:30,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60
[2022-01-31 19:58:30,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280062542]
[2022-01-31 19:58:30,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:58:30,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states
[2022-01-31 19:58:30,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:58:30,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants.
[2022-01-31 19:58:30,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=875, Invalid=2665, Unknown=0, NotChecked=0, Total=3540
[2022-01-31 19:58:30,335 INFO L87 Difference]: Start difference. First operand 325 states and 329 transitions. Second operand has 60 states, 60 states have (on average 2.966666666666667) internal successors, (178), 59 states have internal predecessors, (178), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28)
[2022-01-31 19:58:32,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:58:32,548 INFO L93 Difference]: Finished difference Result 445 states and 476 transitions.
[2022-01-31 19:58:32,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2022-01-31 19:58:32,548 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.966666666666667) internal successors, (178), 59 states have internal predecessors, (178), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 314
[2022-01-31 19:58:32,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:58:32,549 INFO L225 Difference]: With dead ends: 445
[2022-01-31 19:58:32,549 INFO L226 Difference]: Without dead ends: 325
[2022-01-31 19:58:32,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3188 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2673, Invalid=10899, Unknown=0, NotChecked=0, Total=13572
[2022-01-31 19:58:32,550 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 112 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-31 19:58:32,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 108 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1254 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-31 19:58:32,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states.
[2022-01-31 19:58:32,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325.
[2022-01-31 19:58:32,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 265 states have (on average 1.0150943396226415) internal successors, (269), 266 states have internal predecessors, (269), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29)
[2022-01-31 19:58:32,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 328 transitions.
[2022-01-31 19:58:32,911 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 328 transitions. Word has length 314
[2022-01-31 19:58:32,911 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:58:32,911 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 328 transitions.
[2022-01-31 19:58:32,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.966666666666667) internal successors, (178), 59 states have internal predecessors, (178), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28)
[2022-01-31 19:58:32,911 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 328 transitions.
[2022-01-31 19:58:32,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318
[2022-01-31 19:58:32,912 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:58:32,912 INFO L514 BasicCegarLoop]: trace histogram [30, 29, 29, 28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:58:32,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136
[2022-01-31 19:58:32,912 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:58:32,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:58:32,913 INFO L85 PathProgramCache]: Analyzing trace with hash 78085004, now seen corresponding path program 103 times
[2022-01-31 19:58:32,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:58:32,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087456564]
[2022-01-31 19:58:32,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:58:32,914 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:58:32,914 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:58:32,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:58:32,916 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:58:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:58:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97
[2022-01-31 19:58:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2022-01-31 19:58:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113
[2022-01-31 19:58:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2022-01-31 19:58:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2022-01-31 19:58:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137
[2022-01-31 19:58:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145
[2022-01-31 19:58:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153
[2022-01-31 19:58:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161
[2022-01-31 19:58:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169
[2022-01-31 19:58:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177
[2022-01-31 19:58:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185
[2022-01-31 19:58:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193
[2022-01-31 19:58:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201
[2022-01-31 19:58:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209
[2022-01-31 19:58:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217
[2022-01-31 19:58:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225
[2022-01-31 19:58:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233
[2022-01-31 19:58:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241
[2022-01-31 19:58:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249
[2022-01-31 19:58:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257
[2022-01-31 19:58:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265
[2022-01-31 19:58:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273
[2022-01-31 19:58:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281
[2022-01-31 19:58:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289
[2022-01-31 19:58:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297
[2022-01-31 19:58:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305
[2022-01-31 19:58:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:35,965 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 19:58:35,965 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:58:35,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087456564]
[2022-01-31 19:58:35,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1087456564] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:58:35,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:58:35,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93
[2022-01-31 19:58:35,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571757450]
[2022-01-31 19:58:35,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:58:35,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states
[2022-01-31 19:58:35,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:58:35,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants.
[2022-01-31 19:58:35,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=8343, Unknown=0, NotChecked=0, Total=8556
[2022-01-31 19:58:35,967 INFO L87 Difference]: Start difference. First operand 325 states and 328 transitions. Second operand has 93 states, 92 states have (on average 1.9673913043478262) internal successors, (181), 91 states have internal predecessors, (181), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28)
[2022-01-31 19:58:45,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:58:45,410 INFO L93 Difference]: Finished difference Result 448 states and 479 transitions.
[2022-01-31 19:58:45,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states.
[2022-01-31 19:58:45,411 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 92 states have (on average 1.9673913043478262) internal successors, (181), 91 states have internal predecessors, (181), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 317
[2022-01-31 19:58:45,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:58:45,412 INFO L225 Difference]: With dead ends: 448
[2022-01-31 19:58:45,412 INFO L226 Difference]: Without dead ends: 446
[2022-01-31 19:58:45,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8179 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=695, Invalid=32611, Unknown=0, NotChecked=0, Total=33306
[2022-01-31 19:58:45,413 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 145 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 17394 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 17604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 17394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time
[2022-01-31 19:58:45,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 398 Invalid, 17604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 17394 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time]
[2022-01-31 19:58:45,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states.
[2022-01-31 19:58:46,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 440.
[2022-01-31 19:58:46,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 351 states have (on average 1.0113960113960114) internal successors, (355), 353 states have internal predecessors, (355), 58 states have call successors, (58), 31 states have call predecessors, (58), 30 states have return successors, (57), 55 states have call predecessors, (57), 57 states have call successors, (57)
[2022-01-31 19:58:46,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 470 transitions.
[2022-01-31 19:58:46,050 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 470 transitions. Word has length 317
[2022-01-31 19:58:46,050 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:58:46,050 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 470 transitions.
[2022-01-31 19:58:46,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 92 states have (on average 1.9673913043478262) internal successors, (181), 91 states have internal predecessors, (181), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28)
[2022-01-31 19:58:46,051 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 470 transitions.
[2022-01-31 19:58:46,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321
[2022-01-31 19:58:46,052 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:58:46,052 INFO L514 BasicCegarLoop]: trace histogram [31, 30, 30, 28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:58:46,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137
[2022-01-31 19:58:46,052 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:58:46,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:58:46,052 INFO L85 PathProgramCache]: Analyzing trace with hash 527125928, now seen corresponding path program 104 times
[2022-01-31 19:58:46,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:58:46,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2929757]
[2022-01-31 19:58:46,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:58:46,053 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:58:46,053 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:58:46,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:58:46,056 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:58:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:58:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2022-01-31 19:58:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108
[2022-01-31 19:58:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2022-01-31 19:58:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2022-01-31 19:58:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132
[2022-01-31 19:58:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2022-01-31 19:58:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148
[2022-01-31 19:58:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156
[2022-01-31 19:58:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164
[2022-01-31 19:58:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172
[2022-01-31 19:58:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180
[2022-01-31 19:58:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188
[2022-01-31 19:58:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196
[2022-01-31 19:58:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204
[2022-01-31 19:58:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212
[2022-01-31 19:58:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220
[2022-01-31 19:58:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228
[2022-01-31 19:58:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236
[2022-01-31 19:58:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244
[2022-01-31 19:58:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252
[2022-01-31 19:58:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260
[2022-01-31 19:58:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268
[2022-01-31 19:58:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276
[2022-01-31 19:58:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284
[2022-01-31 19:58:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292
[2022-01-31 19:58:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300
[2022-01-31 19:58:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308
[2022-01-31 19:58:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:58:49,170 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 19:58:49,170 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:58:49,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2929757]
[2022-01-31 19:58:49,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2929757] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:58:49,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:58:49,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94
[2022-01-31 19:58:49,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061269197]
[2022-01-31 19:58:49,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:58:49,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states
[2022-01-31 19:58:49,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:58:49,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants.
[2022-01-31 19:58:49,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=8526, Unknown=0, NotChecked=0, Total=8742
[2022-01-31 19:58:49,171 INFO L87 Difference]: Start difference. First operand 440 states and 470 transitions. Second operand has 94 states, 93 states have (on average 1.978494623655914) internal successors, (184), 92 states have internal predecessors, (184), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28)
[2022-01-31 19:59:01,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:59:01,665 INFO L93 Difference]: Finished difference Result 570 states and 630 transitions.
[2022-01-31 19:59:01,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states.
[2022-01-31 19:59:01,665 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 1.978494623655914) internal successors, (184), 92 states have internal predecessors, (184), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 320
[2022-01-31 19:59:01,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:59:01,666 INFO L225 Difference]: With dead ends: 570
[2022-01-31 19:59:01,666 INFO L226 Difference]: Without dead ends: 568
[2022-01-31 19:59:01,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12124 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=968, Invalid=44614, Unknown=0, NotChecked=0, Total=45582
[2022-01-31 19:59:01,668 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 213 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 21403 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 21706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 21403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time
[2022-01-31 19:59:01,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 435 Invalid, 21706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 21403 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time]
[2022-01-31 19:59:01,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states.
[2022-01-31 19:59:02,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 441.
[2022-01-31 19:59:02,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 352 states have (on average 1.0142045454545454) internal successors, (357), 354 states have internal predecessors, (357), 58 states have call successors, (58), 31 states have call predecessors, (58), 30 states have return successors, (57), 55 states have call predecessors, (57), 57 states have call successors, (57)
[2022-01-31 19:59:02,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 472 transitions.
[2022-01-31 19:59:02,335 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 472 transitions. Word has length 320
[2022-01-31 19:59:02,335 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:59:02,335 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 472 transitions.
[2022-01-31 19:59:02,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 1.978494623655914) internal successors, (184), 92 states have internal predecessors, (184), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28)
[2022-01-31 19:59:02,335 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 472 transitions.
[2022-01-31 19:59:02,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323
[2022-01-31 19:59:02,336 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:59:02,336 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:59:02,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138
[2022-01-31 19:59:02,336 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:59:02,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:59:02,337 INFO L85 PathProgramCache]: Analyzing trace with hash -814680127, now seen corresponding path program 27 times
[2022-01-31 19:59:02,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:59:02,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365420866]
[2022-01-31 19:59:02,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:59:02,338 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:59:02,338 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:59:02,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:59:02,340 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:59:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:59:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102
[2022-01-31 19:59:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110
[2022-01-31 19:59:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118
[2022-01-31 19:59:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126
[2022-01-31 19:59:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2022-01-31 19:59:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142
[2022-01-31 19:59:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150
[2022-01-31 19:59:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158
[2022-01-31 19:59:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166
[2022-01-31 19:59:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174
[2022-01-31 19:59:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182
[2022-01-31 19:59:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190
[2022-01-31 19:59:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198
[2022-01-31 19:59:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206
[2022-01-31 19:59:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214
[2022-01-31 19:59:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222
[2022-01-31 19:59:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230
[2022-01-31 19:59:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238
[2022-01-31 19:59:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246
[2022-01-31 19:59:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254
[2022-01-31 19:59:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262
[2022-01-31 19:59:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270
[2022-01-31 19:59:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278
[2022-01-31 19:59:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286
[2022-01-31 19:59:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294
[2022-01-31 19:59:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302
[2022-01-31 19:59:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310
[2022-01-31 19:59:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:02,846 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 19:59:02,847 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:59:02,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365420866]
[2022-01-31 19:59:02,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1365420866] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:59:02,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:59:02,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36
[2022-01-31 19:59:02,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561115098]
[2022-01-31 19:59:02,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:59:02,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states
[2022-01-31 19:59:02,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:59:02,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2022-01-31 19:59:02,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=566, Invalid=694, Unknown=0, NotChecked=0, Total=1260
[2022-01-31 19:59:02,848 INFO L87 Difference]: Start difference. First operand 441 states and 472 transitions. Second operand has 36 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 35 states have internal predecessors, (107), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:59:04,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:59:04,821 INFO L93 Difference]: Finished difference Result 900 states and 991 transitions.
[2022-01-31 19:59:04,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2022-01-31 19:59:04,821 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 35 states have internal predecessors, (107), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 322
[2022-01-31 19:59:04,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:59:04,823 INFO L225 Difference]: With dead ends: 900
[2022-01-31 19:59:04,823 INFO L226 Difference]: Without dead ends: 675
[2022-01-31 19:59:04,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1754, Invalid=2938, Unknown=0, NotChecked=0, Total=4692
[2022-01-31 19:59:04,824 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 264 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 19:59:04,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 27 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 19:59:04,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states.
[2022-01-31 19:59:05,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 443.
[2022-01-31 19:59:05,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 354 states have (on average 1.0141242937853108) internal successors, (359), 356 states have internal predecessors, (359), 58 states have call successors, (58), 31 states have call predecessors, (58), 30 states have return successors, (57), 55 states have call predecessors, (57), 57 states have call successors, (57)
[2022-01-31 19:59:05,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 474 transitions.
[2022-01-31 19:59:05,468 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 474 transitions. Word has length 322
[2022-01-31 19:59:05,468 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:59:05,468 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 474 transitions.
[2022-01-31 19:59:05,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 35 states have internal predecessors, (107), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:59:05,468 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 474 transitions.
[2022-01-31 19:59:05,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324
[2022-01-31 19:59:05,469 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:59:05,469 INFO L514 BasicCegarLoop]: trace histogram [32, 31, 31, 28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:59:05,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139
[2022-01-31 19:59:05,469 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:59:05,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:59:05,470 INFO L85 PathProgramCache]: Analyzing trace with hash -917834228, now seen corresponding path program 105 times
[2022-01-31 19:59:05,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:59:05,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807137184]
[2022-01-31 19:59:05,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:59:05,471 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:59:05,471 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:59:05,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:59:05,474 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:59:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:59:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103
[2022-01-31 19:59:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2022-01-31 19:59:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119
[2022-01-31 19:59:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127
[2022-01-31 19:59:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2022-01-31 19:59:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143
[2022-01-31 19:59:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151
[2022-01-31 19:59:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2022-01-31 19:59:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167
[2022-01-31 19:59:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175
[2022-01-31 19:59:08,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183
[2022-01-31 19:59:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191
[2022-01-31 19:59:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199
[2022-01-31 19:59:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207
[2022-01-31 19:59:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215
[2022-01-31 19:59:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223
[2022-01-31 19:59:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231
[2022-01-31 19:59:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239
[2022-01-31 19:59:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247
[2022-01-31 19:59:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255
[2022-01-31 19:59:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263
[2022-01-31 19:59:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271
[2022-01-31 19:59:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279
[2022-01-31 19:59:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287
[2022-01-31 19:59:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295
[2022-01-31 19:59:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303
[2022-01-31 19:59:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311
[2022-01-31 19:59:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:08,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 19:59:08,663 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:59:08,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807137184]
[2022-01-31 19:59:08,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [807137184] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:59:08,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:59:08,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95
[2022-01-31 19:59:08,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423135828]
[2022-01-31 19:59:08,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:59:08,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states
[2022-01-31 19:59:08,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:59:08,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants.
[2022-01-31 19:59:08,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=8710, Unknown=0, NotChecked=0, Total=8930
[2022-01-31 19:59:08,665 INFO L87 Difference]: Start difference. First operand 443 states and 474 transitions. Second operand has 95 states, 94 states have (on average 1.9893617021276595) internal successors, (187), 93 states have internal predecessors, (187), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28)
[2022-01-31 19:59:18,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:59:18,709 INFO L93 Difference]: Finished difference Result 455 states and 486 transitions.
[2022-01-31 19:59:18,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states.
[2022-01-31 19:59:18,710 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 1.9893617021276595) internal successors, (187), 93 states have internal predecessors, (187), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 323
[2022-01-31 19:59:18,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:59:18,711 INFO L225 Difference]: With dead ends: 455
[2022-01-31 19:59:18,711 INFO L226 Difference]: Without dead ends: 453
[2022-01-31 19:59:18,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8267 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=761, Invalid=33279, Unknown=0, NotChecked=0, Total=34040
[2022-01-31 19:59:18,712 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 167 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 18963 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 19204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 18963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time
[2022-01-31 19:59:18,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 435 Invalid, 19204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 18963 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time]
[2022-01-31 19:59:18,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states.
[2022-01-31 19:59:19,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 336.
[2022-01-31 19:59:19,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 274 states have (on average 1.0182481751824817) internal successors, (279), 275 states have internal predecessors, (279), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30)
[2022-01-31 19:59:19,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 340 transitions.
[2022-01-31 19:59:19,090 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 340 transitions. Word has length 323
[2022-01-31 19:59:19,090 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:59:19,090 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 340 transitions.
[2022-01-31 19:59:19,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 1.9893617021276595) internal successors, (187), 93 states have internal predecessors, (187), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28)
[2022-01-31 19:59:19,090 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 340 transitions.
[2022-01-31 19:59:19,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326
[2022-01-31 19:59:19,091 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:59:19,091 INFO L514 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:59:19,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140
[2022-01-31 19:59:19,092 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:59:19,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:59:19,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1588220774, now seen corresponding path program 106 times
[2022-01-31 19:59:19,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:59:19,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525631398]
[2022-01-31 19:59:19,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:59:19,093 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:59:19,093 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:59:19,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:59:19,096 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:59:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:59:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97
[2022-01-31 19:59:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2022-01-31 19:59:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113
[2022-01-31 19:59:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2022-01-31 19:59:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2022-01-31 19:59:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137
[2022-01-31 19:59:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145
[2022-01-31 19:59:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153
[2022-01-31 19:59:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161
[2022-01-31 19:59:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169
[2022-01-31 19:59:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177
[2022-01-31 19:59:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185
[2022-01-31 19:59:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193
[2022-01-31 19:59:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201
[2022-01-31 19:59:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209
[2022-01-31 19:59:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217
[2022-01-31 19:59:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225
[2022-01-31 19:59:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233
[2022-01-31 19:59:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241
[2022-01-31 19:59:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249
[2022-01-31 19:59:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257
[2022-01-31 19:59:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265
[2022-01-31 19:59:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273
[2022-01-31 19:59:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281
[2022-01-31 19:59:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289
[2022-01-31 19:59:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297
[2022-01-31 19:59:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305
[2022-01-31 19:59:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313
[2022-01-31 19:59:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:20,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 19:59:20,124 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:59:20,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525631398]
[2022-01-31 19:59:20,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [525631398] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:59:20,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:59:20,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62
[2022-01-31 19:59:20,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197705280]
[2022-01-31 19:59:20,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:59:20,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states
[2022-01-31 19:59:20,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:59:20,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants.
[2022-01-31 19:59:20,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=935, Invalid=2847, Unknown=0, NotChecked=0, Total=3782
[2022-01-31 19:59:20,126 INFO L87 Difference]: Start difference. First operand 336 states and 340 transitions. Second operand has 62 states, 62 states have (on average 2.967741935483871) internal successors, (184), 61 states have internal predecessors, (184), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29)
[2022-01-31 19:59:22,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:59:22,437 INFO L93 Difference]: Finished difference Result 460 states and 492 transitions.
[2022-01-31 19:59:22,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states.
[2022-01-31 19:59:22,437 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.967741935483871) internal successors, (184), 61 states have internal predecessors, (184), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 325
[2022-01-31 19:59:22,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:59:22,438 INFO L225 Difference]: With dead ends: 460
[2022-01-31 19:59:22,438 INFO L226 Difference]: Without dead ends: 336
[2022-01-31 19:59:22,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3418 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2855, Invalid=11665, Unknown=0, NotChecked=0, Total=14520
[2022-01-31 19:59:22,439 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 115 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-31 19:59:22,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 115 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-31 19:59:22,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states.
[2022-01-31 19:59:22,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336.
[2022-01-31 19:59:22,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 274 states have (on average 1.0145985401459854) internal successors, (278), 275 states have internal predecessors, (278), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30)
[2022-01-31 19:59:22,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 339 transitions.
[2022-01-31 19:59:22,824 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 339 transitions. Word has length 325
[2022-01-31 19:59:22,824 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:59:22,824 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 339 transitions.
[2022-01-31 19:59:22,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.967741935483871) internal successors, (184), 61 states have internal predecessors, (184), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29)
[2022-01-31 19:59:22,824 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 339 transitions.
[2022-01-31 19:59:22,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329
[2022-01-31 19:59:22,825 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:59:22,825 INFO L514 BasicCegarLoop]: trace histogram [31, 30, 30, 29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:59:22,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141
[2022-01-31 19:59:22,826 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:59:22,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:59:22,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1626884482, now seen corresponding path program 107 times
[2022-01-31 19:59:22,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:59:22,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376410585]
[2022-01-31 19:59:22,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:59:22,827 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:59:22,827 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:59:22,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:59:22,830 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:59:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:25,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:59:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:25,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2022-01-31 19:59:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:25,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108
[2022-01-31 19:59:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:25,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2022-01-31 19:59:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:25,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2022-01-31 19:59:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:25,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132
[2022-01-31 19:59:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:25,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2022-01-31 19:59:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148
[2022-01-31 19:59:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156
[2022-01-31 19:59:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164
[2022-01-31 19:59:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172
[2022-01-31 19:59:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180
[2022-01-31 19:59:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188
[2022-01-31 19:59:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196
[2022-01-31 19:59:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204
[2022-01-31 19:59:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212
[2022-01-31 19:59:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220
[2022-01-31 19:59:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228
[2022-01-31 19:59:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236
[2022-01-31 19:59:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244
[2022-01-31 19:59:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252
[2022-01-31 19:59:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260
[2022-01-31 19:59:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268
[2022-01-31 19:59:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276
[2022-01-31 19:59:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284
[2022-01-31 19:59:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292
[2022-01-31 19:59:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300
[2022-01-31 19:59:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308
[2022-01-31 19:59:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316
[2022-01-31 19:59:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:26,028 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 19:59:26,028 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:59:26,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376410585]
[2022-01-31 19:59:26,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1376410585] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:59:26,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:59:26,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96
[2022-01-31 19:59:26,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291035446]
[2022-01-31 19:59:26,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:59:26,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states
[2022-01-31 19:59:26,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:59:26,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants.
[2022-01-31 19:59:26,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=8900, Unknown=0, NotChecked=0, Total=9120
[2022-01-31 19:59:26,029 INFO L87 Difference]: Start difference. First operand 336 states and 339 transitions. Second operand has 96 states, 95 states have (on average 1.9684210526315788) internal successors, (187), 94 states have internal predecessors, (187), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29)
[2022-01-31 19:59:36,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:59:36,675 INFO L93 Difference]: Finished difference Result 463 states and 495 transitions.
[2022-01-31 19:59:36,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states.
[2022-01-31 19:59:36,676 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.9684210526315788) internal successors, (187), 94 states have internal predecessors, (187), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 328
[2022-01-31 19:59:36,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:59:36,677 INFO L225 Difference]: With dead ends: 463
[2022-01-31 19:59:36,677 INFO L226 Difference]: Without dead ends: 461
[2022-01-31 19:59:36,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8746 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=718, Invalid=34814, Unknown=0, NotChecked=0, Total=35532
[2022-01-31 19:59:36,679 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 149 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 19842 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 20059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 19842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time
[2022-01-31 19:59:36,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 438 Invalid, 20059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 19842 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time]
[2022-01-31 19:59:36,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states.
[2022-01-31 19:59:37,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 455.
[2022-01-31 19:59:37,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 363 states have (on average 1.0110192837465564) internal successors, (367), 365 states have internal predecessors, (367), 60 states have call successors, (60), 32 states have call predecessors, (60), 31 states have return successors, (59), 57 states have call predecessors, (59), 59 states have call successors, (59)
[2022-01-31 19:59:37,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 486 transitions.
[2022-01-31 19:59:37,439 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 486 transitions. Word has length 328
[2022-01-31 19:59:37,439 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:59:37,439 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 486 transitions.
[2022-01-31 19:59:37,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.9684210526315788) internal successors, (187), 94 states have internal predecessors, (187), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29)
[2022-01-31 19:59:37,439 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 486 transitions.
[2022-01-31 19:59:37,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332
[2022-01-31 19:59:37,440 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:59:37,440 INFO L514 BasicCegarLoop]: trace histogram [32, 31, 31, 29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:59:37,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142
[2022-01-31 19:59:37,441 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:59:37,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:59:37,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1888793114, now seen corresponding path program 108 times
[2022-01-31 19:59:37,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:59:37,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583293687]
[2022-01-31 19:59:37,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:59:37,442 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:59:37,442 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:59:37,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:59:37,445 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:59:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:59:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103
[2022-01-31 19:59:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2022-01-31 19:59:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119
[2022-01-31 19:59:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127
[2022-01-31 19:59:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2022-01-31 19:59:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143
[2022-01-31 19:59:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151
[2022-01-31 19:59:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2022-01-31 19:59:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167
[2022-01-31 19:59:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175
[2022-01-31 19:59:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183
[2022-01-31 19:59:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191
[2022-01-31 19:59:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199
[2022-01-31 19:59:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207
[2022-01-31 19:59:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215
[2022-01-31 19:59:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223
[2022-01-31 19:59:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231
[2022-01-31 19:59:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239
[2022-01-31 19:59:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247
[2022-01-31 19:59:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255
[2022-01-31 19:59:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263
[2022-01-31 19:59:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271
[2022-01-31 19:59:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279
[2022-01-31 19:59:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287
[2022-01-31 19:59:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295
[2022-01-31 19:59:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303
[2022-01-31 19:59:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311
[2022-01-31 19:59:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319
[2022-01-31 19:59:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:40,789 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 19:59:40,789 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:59:40,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583293687]
[2022-01-31 19:59:40,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [583293687] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:59:40,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:59:40,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97
[2022-01-31 19:59:40,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154908613]
[2022-01-31 19:59:40,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:59:40,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states
[2022-01-31 19:59:40,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:59:40,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants.
[2022-01-31 19:59:40,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=9089, Unknown=0, NotChecked=0, Total=9312
[2022-01-31 19:59:40,791 INFO L87 Difference]: Start difference. First operand 455 states and 486 transitions. Second operand has 97 states, 96 states have (on average 1.9791666666666667) internal successors, (190), 95 states have internal predecessors, (190), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29)
[2022-01-31 19:59:54,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:59:54,112 INFO L93 Difference]: Finished difference Result 589 states and 651 transitions.
[2022-01-31 19:59:54,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states.
[2022-01-31 19:59:54,113 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 1.9791666666666667) internal successors, (190), 95 states have internal predecessors, (190), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 331
[2022-01-31 19:59:54,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:59:54,114 INFO L225 Difference]: With dead ends: 589
[2022-01-31 19:59:54,114 INFO L226 Difference]: Without dead ends: 587
[2022-01-31 19:59:54,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12962 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1000, Invalid=47620, Unknown=0, NotChecked=0, Total=48620
[2022-01-31 19:59:54,116 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 280 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 22563 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 22934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 22563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time
[2022-01-31 19:59:54,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 439 Invalid, 22934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 22563 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time]
[2022-01-31 19:59:54,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states.
[2022-01-31 19:59:54,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 456.
[2022-01-31 19:59:54,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 364 states have (on average 1.0137362637362637) internal successors, (369), 366 states have internal predecessors, (369), 60 states have call successors, (60), 32 states have call predecessors, (60), 31 states have return successors, (59), 57 states have call predecessors, (59), 59 states have call successors, (59)
[2022-01-31 19:59:54,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 488 transitions.
[2022-01-31 19:59:54,817 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 488 transitions. Word has length 331
[2022-01-31 19:59:54,818 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:59:54,818 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 488 transitions.
[2022-01-31 19:59:54,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 1.9791666666666667) internal successors, (190), 95 states have internal predecessors, (190), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29)
[2022-01-31 19:59:54,818 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 488 transitions.
[2022-01-31 19:59:54,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334
[2022-01-31 19:59:54,819 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:59:54,819 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 32, 29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:59:54,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143
[2022-01-31 19:59:54,819 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:59:54,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:59:54,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2044312065, now seen corresponding path program 28 times
[2022-01-31 19:59:54,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:59:54,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847615960]
[2022-01-31 19:59:54,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:59:54,820 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:59:54,820 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:59:54,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:59:54,823 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:59:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 19:59:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2022-01-31 19:59:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113
[2022-01-31 19:59:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2022-01-31 19:59:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2022-01-31 19:59:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137
[2022-01-31 19:59:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145
[2022-01-31 19:59:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153
[2022-01-31 19:59:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161
[2022-01-31 19:59:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169
[2022-01-31 19:59:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177
[2022-01-31 19:59:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185
[2022-01-31 19:59:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193
[2022-01-31 19:59:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201
[2022-01-31 19:59:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209
[2022-01-31 19:59:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217
[2022-01-31 19:59:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225
[2022-01-31 19:59:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233
[2022-01-31 19:59:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241
[2022-01-31 19:59:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249
[2022-01-31 19:59:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257
[2022-01-31 19:59:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265
[2022-01-31 19:59:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273
[2022-01-31 19:59:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281
[2022-01-31 19:59:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289
[2022-01-31 19:59:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297
[2022-01-31 19:59:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305
[2022-01-31 19:59:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313
[2022-01-31 19:59:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321
[2022-01-31 19:59:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 19:59:55,366 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 19:59:55,366 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 19:59:55,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847615960]
[2022-01-31 19:59:55,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1847615960] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 19:59:55,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 19:59:55,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37
[2022-01-31 19:59:55,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729713345]
[2022-01-31 19:59:55,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 19:59:55,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states
[2022-01-31 19:59:55,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 19:59:55,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2022-01-31 19:59:55,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=732, Unknown=0, NotChecked=0, Total=1332
[2022-01-31 19:59:55,367 INFO L87 Difference]: Start difference. First operand 456 states and 488 transitions. Second operand has 37 states, 37 states have (on average 2.972972972972973) internal successors, (110), 36 states have internal predecessors, (110), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:59:57,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 19:59:57,489 INFO L93 Difference]: Finished difference Result 931 states and 1025 transitions.
[2022-01-31 19:59:57,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2022-01-31 19:59:57,490 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.972972972972973) internal successors, (110), 36 states have internal predecessors, (110), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 333
[2022-01-31 19:59:57,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 19:59:57,491 INFO L225 Difference]: With dead ends: 931
[2022-01-31 19:59:57,491 INFO L226 Difference]: Without dead ends: 698
[2022-01-31 19:59:57,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1858, Invalid=3112, Unknown=0, NotChecked=0, Total=4970
[2022-01-31 19:59:57,492 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 279 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 19:59:57,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 21 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 19:59:57,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states.
[2022-01-31 19:59:58,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 458.
[2022-01-31 19:59:58,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 366 states have (on average 1.0136612021857923) internal successors, (371), 368 states have internal predecessors, (371), 60 states have call successors, (60), 32 states have call predecessors, (60), 31 states have return successors, (59), 57 states have call predecessors, (59), 59 states have call successors, (59)
[2022-01-31 19:59:58,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 490 transitions.
[2022-01-31 19:59:58,262 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 490 transitions. Word has length 333
[2022-01-31 19:59:58,262 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 19:59:58,262 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 490 transitions.
[2022-01-31 19:59:58,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.972972972972973) internal successors, (110), 36 states have internal predecessors, (110), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 19:59:58,262 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 490 transitions.
[2022-01-31 19:59:58,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335
[2022-01-31 19:59:58,264 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 19:59:58,264 INFO L514 BasicCegarLoop]: trace histogram [33, 32, 32, 29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 19:59:58,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144
[2022-01-31 19:59:58,264 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 19:59:58,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 19:59:58,264 INFO L85 PathProgramCache]: Analyzing trace with hash -367575294, now seen corresponding path program 109 times
[2022-01-31 19:59:58,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 19:59:58,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951706869]
[2022-01-31 19:59:58,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 19:59:58,265 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 19:59:58,265 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 19:59:58,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 19:59:58,268 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 19:59:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 20:00:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106
[2022-01-31 20:00:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114
[2022-01-31 20:00:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122
[2022-01-31 20:00:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2022-01-31 20:00:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138
[2022-01-31 20:00:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146
[2022-01-31 20:00:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154
[2022-01-31 20:00:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162
[2022-01-31 20:00:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170
[2022-01-31 20:00:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178
[2022-01-31 20:00:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186
[2022-01-31 20:00:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194
[2022-01-31 20:00:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202
[2022-01-31 20:00:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210
[2022-01-31 20:00:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218
[2022-01-31 20:00:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226
[2022-01-31 20:00:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234
[2022-01-31 20:00:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242
[2022-01-31 20:00:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250
[2022-01-31 20:00:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258
[2022-01-31 20:00:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266
[2022-01-31 20:00:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274
[2022-01-31 20:00:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282
[2022-01-31 20:00:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290
[2022-01-31 20:00:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298
[2022-01-31 20:00:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306
[2022-01-31 20:00:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314
[2022-01-31 20:00:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322
[2022-01-31 20:00:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 20:00:01,639 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 20:00:01,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951706869]
[2022-01-31 20:00:01,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [951706869] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 20:00:01,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 20:00:01,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98
[2022-01-31 20:00:01,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437728237]
[2022-01-31 20:00:01,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 20:00:01,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states
[2022-01-31 20:00:01,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 20:00:01,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants.
[2022-01-31 20:00:01,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=9279, Unknown=0, NotChecked=0, Total=9506
[2022-01-31 20:00:01,641 INFO L87 Difference]: Start difference. First operand 458 states and 490 transitions. Second operand has 98 states, 97 states have (on average 1.9896907216494846) internal successors, (193), 96 states have internal predecessors, (193), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29)
[2022-01-31 20:00:12,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 20:00:12,213 INFO L93 Difference]: Finished difference Result 470 states and 502 transitions.
[2022-01-31 20:00:12,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states.
[2022-01-31 20:00:12,214 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 1.9896907216494846) internal successors, (193), 96 states have internal predecessors, (193), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 334
[2022-01-31 20:00:12,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 20:00:12,215 INFO L225 Difference]: With dead ends: 470
[2022-01-31 20:00:12,215 INFO L226 Difference]: Without dead ends: 468
[2022-01-31 20:00:12,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8837 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=786, Invalid=35504, Unknown=0, NotChecked=0, Total=36290
[2022-01-31 20:00:12,216 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 172 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 19595 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 19844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 19595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time
[2022-01-31 20:00:12,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 436 Invalid, 19844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 19595 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time]
[2022-01-31 20:00:12,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states.
[2022-01-31 20:00:12,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 347.
[2022-01-31 20:00:12,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 283 states have (on average 1.017667844522968) internal successors, (288), 284 states have internal predecessors, (288), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31)
[2022-01-31 20:00:12,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 351 transitions.
[2022-01-31 20:00:12,643 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 351 transitions. Word has length 334
[2022-01-31 20:00:12,643 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 20:00:12,643 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 351 transitions.
[2022-01-31 20:00:12,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 1.9896907216494846) internal successors, (193), 96 states have internal predecessors, (193), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29)
[2022-01-31 20:00:12,644 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 351 transitions.
[2022-01-31 20:00:12,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337
[2022-01-31 20:00:12,645 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 20:00:12,645 INFO L514 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 20:00:12,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145
[2022-01-31 20:00:12,645 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 20:00:12,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 20:00:12,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1314862244, now seen corresponding path program 110 times
[2022-01-31 20:00:12,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 20:00:12,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393397343]
[2022-01-31 20:00:12,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 20:00:12,647 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 20:00:12,647 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 20:00:12,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 20:00:12,651 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 20:00:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 20:00:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2022-01-31 20:00:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108
[2022-01-31 20:00:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2022-01-31 20:00:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2022-01-31 20:00:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132
[2022-01-31 20:00:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2022-01-31 20:00:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148
[2022-01-31 20:00:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156
[2022-01-31 20:00:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164
[2022-01-31 20:00:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172
[2022-01-31 20:00:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180
[2022-01-31 20:00:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188
[2022-01-31 20:00:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196
[2022-01-31 20:00:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204
[2022-01-31 20:00:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212
[2022-01-31 20:00:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220
[2022-01-31 20:00:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228
[2022-01-31 20:00:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236
[2022-01-31 20:00:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244
[2022-01-31 20:00:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252
[2022-01-31 20:00:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260
[2022-01-31 20:00:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268
[2022-01-31 20:00:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276
[2022-01-31 20:00:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284
[2022-01-31 20:00:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292
[2022-01-31 20:00:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300
[2022-01-31 20:00:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308
[2022-01-31 20:00:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316
[2022-01-31 20:00:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324
[2022-01-31 20:00:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:13,764 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 20:00:13,765 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 20:00:13,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393397343]
[2022-01-31 20:00:13,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1393397343] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 20:00:13,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 20:00:13,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64
[2022-01-31 20:00:13,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322605562]
[2022-01-31 20:00:13,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 20:00:13,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states
[2022-01-31 20:00:13,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 20:00:13,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants.
[2022-01-31 20:00:13,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=997, Invalid=3035, Unknown=0, NotChecked=0, Total=4032
[2022-01-31 20:00:13,766 INFO L87 Difference]: Start difference. First operand 347 states and 351 transitions. Second operand has 64 states, 64 states have (on average 2.96875) internal successors, (190), 63 states have internal predecessors, (190), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30)
[2022-01-31 20:00:16,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 20:00:16,469 INFO L93 Difference]: Finished difference Result 475 states and 508 transitions.
[2022-01-31 20:00:16,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states.
[2022-01-31 20:00:16,469 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.96875) internal successors, (190), 63 states have internal predecessors, (190), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 336
[2022-01-31 20:00:16,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 20:00:16,470 INFO L225 Difference]: With dead ends: 475
[2022-01-31 20:00:16,470 INFO L226 Difference]: Without dead ends: 347
[2022-01-31 20:00:16,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3656 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3043, Invalid=12457, Unknown=0, NotChecked=0, Total=15500
[2022-01-31 20:00:16,471 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 118 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-01-31 20:00:16,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 137 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2022-01-31 20:00:16,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states.
[2022-01-31 20:00:16,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347.
[2022-01-31 20:00:16,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 283 states have (on average 1.0141342756183747) internal successors, (287), 284 states have internal predecessors, (287), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31)
[2022-01-31 20:00:16,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 350 transitions.
[2022-01-31 20:00:16,916 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 350 transitions. Word has length 336
[2022-01-31 20:00:16,916 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 20:00:16,916 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 350 transitions.
[2022-01-31 20:00:16,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.96875) internal successors, (190), 63 states have internal predecessors, (190), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30)
[2022-01-31 20:00:16,916 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 350 transitions.
[2022-01-31 20:00:16,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340
[2022-01-31 20:00:16,917 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 20:00:16,918 INFO L514 BasicCegarLoop]: trace histogram [32, 31, 31, 30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 20:00:16,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146
[2022-01-31 20:00:16,918 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 20:00:16,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 20:00:16,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1182061632, now seen corresponding path program 111 times
[2022-01-31 20:00:16,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 20:00:16,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788769643]
[2022-01-31 20:00:16,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 20:00:16,919 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 20:00:16,919 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 20:00:16,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 20:00:16,923 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 20:00:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 20:00:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103
[2022-01-31 20:00:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2022-01-31 20:00:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119
[2022-01-31 20:00:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127
[2022-01-31 20:00:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2022-01-31 20:00:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143
[2022-01-31 20:00:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151
[2022-01-31 20:00:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2022-01-31 20:00:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167
[2022-01-31 20:00:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175
[2022-01-31 20:00:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183
[2022-01-31 20:00:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191
[2022-01-31 20:00:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199
[2022-01-31 20:00:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207
[2022-01-31 20:00:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215
[2022-01-31 20:00:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223
[2022-01-31 20:00:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231
[2022-01-31 20:00:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239
[2022-01-31 20:00:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247
[2022-01-31 20:00:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255
[2022-01-31 20:00:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263
[2022-01-31 20:00:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271
[2022-01-31 20:00:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279
[2022-01-31 20:00:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287
[2022-01-31 20:00:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295
[2022-01-31 20:00:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303
[2022-01-31 20:00:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311
[2022-01-31 20:00:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319
[2022-01-31 20:00:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327
[2022-01-31 20:00:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:21,546 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 20:00:21,546 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 20:00:21,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788769643]
[2022-01-31 20:00:21,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1788769643] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 20:00:21,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 20:00:21,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98
[2022-01-31 20:00:21,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543005193]
[2022-01-31 20:00:21,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 20:00:21,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states
[2022-01-31 20:00:21,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 20:00:21,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants.
[2022-01-31 20:00:21,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=9298, Unknown=0, NotChecked=0, Total=9506
[2022-01-31 20:00:21,548 INFO L87 Difference]: Start difference. First operand 347 states and 350 transitions. Second operand has 98 states, 97 states have (on average 1.9896907216494846) internal successors, (193), 96 states have internal predecessors, (193), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30)
[2022-01-31 20:00:34,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 20:00:34,727 INFO L93 Difference]: Finished difference Result 478 states and 511 transitions.
[2022-01-31 20:00:34,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states.
[2022-01-31 20:00:34,728 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 1.9896907216494846) internal successors, (193), 96 states have internal predecessors, (193), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 339
[2022-01-31 20:00:34,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 20:00:34,729 INFO L225 Difference]: With dead ends: 478
[2022-01-31 20:00:34,729 INFO L226 Difference]: Without dead ends: 476
[2022-01-31 20:00:34,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6501 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=689, Invalid=36753, Unknown=0, NotChecked=0, Total=37442
[2022-01-31 20:00:34,730 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 152 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 22666 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 22872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 22666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time
[2022-01-31 20:00:34,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 480 Invalid, 22872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 22666 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time]
[2022-01-31 20:00:34,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states.
[2022-01-31 20:00:35,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 470.
[2022-01-31 20:00:35,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 375 states have (on average 1.0106666666666666) internal successors, (379), 377 states have internal predecessors, (379), 62 states have call successors, (62), 33 states have call predecessors, (62), 32 states have return successors, (61), 59 states have call predecessors, (61), 61 states have call successors, (61)
[2022-01-31 20:00:35,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 502 transitions.
[2022-01-31 20:00:35,488 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 502 transitions. Word has length 339
[2022-01-31 20:00:35,488 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 20:00:35,488 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 502 transitions.
[2022-01-31 20:00:35,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 1.9896907216494846) internal successors, (193), 96 states have internal predecessors, (193), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30)
[2022-01-31 20:00:35,488 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 502 transitions.
[2022-01-31 20:00:35,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343
[2022-01-31 20:00:35,490 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 20:00:35,490 INFO L514 BasicCegarLoop]: trace histogram [33, 32, 32, 30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 20:00:35,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147
[2022-01-31 20:00:35,490 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 20:00:35,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 20:00:35,490 INFO L85 PathProgramCache]: Analyzing trace with hash -583909156, now seen corresponding path program 112 times
[2022-01-31 20:00:35,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 20:00:35,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062792834]
[2022-01-31 20:00:35,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 20:00:35,491 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 20:00:35,491 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 20:00:35,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 20:00:35,494 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 20:00:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 20:00:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106
[2022-01-31 20:00:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114
[2022-01-31 20:00:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122
[2022-01-31 20:00:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130
[2022-01-31 20:00:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138
[2022-01-31 20:00:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146
[2022-01-31 20:00:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154
[2022-01-31 20:00:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162
[2022-01-31 20:00:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170
[2022-01-31 20:00:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178
[2022-01-31 20:00:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186
[2022-01-31 20:00:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194
[2022-01-31 20:00:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202
[2022-01-31 20:00:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210
[2022-01-31 20:00:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218
[2022-01-31 20:00:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226
[2022-01-31 20:00:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234
[2022-01-31 20:00:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242
[2022-01-31 20:00:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250
[2022-01-31 20:00:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258
[2022-01-31 20:00:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266
[2022-01-31 20:00:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274
[2022-01-31 20:00:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282
[2022-01-31 20:00:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290
[2022-01-31 20:00:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298
[2022-01-31 20:00:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306
[2022-01-31 20:00:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314
[2022-01-31 20:00:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322
[2022-01-31 20:00:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330
[2022-01-31 20:00:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:40,172 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 20:00:40,172 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 20:00:40,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062792834]
[2022-01-31 20:00:40,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2062792834] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 20:00:40,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 20:00:40,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99
[2022-01-31 20:00:40,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456369300]
[2022-01-31 20:00:40,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 20:00:40,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states
[2022-01-31 20:00:40,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 20:00:40,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants.
[2022-01-31 20:00:40,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=9491, Unknown=0, NotChecked=0, Total=9702
[2022-01-31 20:00:40,174 INFO L87 Difference]: Start difference. First operand 470 states and 502 transitions. Second operand has 99 states, 98 states have (on average 2.0) internal successors, (196), 97 states have internal predecessors, (196), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30)
[2022-01-31 20:00:56,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 20:00:56,854 INFO L93 Difference]: Finished difference Result 608 states and 672 transitions.
[2022-01-31 20:00:56,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states.
[2022-01-31 20:00:56,854 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 2.0) internal successors, (196), 97 states have internal predecessors, (196), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 342
[2022-01-31 20:00:56,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 20:00:56,855 INFO L225 Difference]: With dead ends: 608
[2022-01-31 20:00:56,856 INFO L226 Difference]: Without dead ends: 606
[2022-01-31 20:00:56,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10468 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=980, Invalid=50322, Unknown=0, NotChecked=0, Total=51302
[2022-01-31 20:00:56,858 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 223 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 25880 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 26184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 25880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time
[2022-01-31 20:00:56,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 488 Invalid, 26184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 25880 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time]
[2022-01-31 20:00:56,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states.
[2022-01-31 20:00:57,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 471.
[2022-01-31 20:00:57,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 376 states have (on average 1.0132978723404256) internal successors, (381), 378 states have internal predecessors, (381), 62 states have call successors, (62), 33 states have call predecessors, (62), 32 states have return successors, (61), 59 states have call predecessors, (61), 61 states have call successors, (61)
[2022-01-31 20:00:57,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 504 transitions.
[2022-01-31 20:00:57,634 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 504 transitions. Word has length 342
[2022-01-31 20:00:57,635 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 20:00:57,635 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 504 transitions.
[2022-01-31 20:00:57,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 2.0) internal successors, (196), 97 states have internal predecessors, (196), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30)
[2022-01-31 20:00:57,635 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 504 transitions.
[2022-01-31 20:00:57,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345
[2022-01-31 20:00:57,636 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 20:00:57,636 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 20:00:57,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148
[2022-01-31 20:00:57,636 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 20:00:57,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 20:00:57,636 INFO L85 PathProgramCache]: Analyzing trace with hash -223135499, now seen corresponding path program 29 times
[2022-01-31 20:00:57,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 20:00:57,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235813708]
[2022-01-31 20:00:57,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 20:00:57,637 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 20:00:57,638 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 20:00:57,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 20:00:57,640 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 20:00:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 20:00:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108
[2022-01-31 20:00:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2022-01-31 20:00:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2022-01-31 20:00:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132
[2022-01-31 20:00:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2022-01-31 20:00:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148
[2022-01-31 20:00:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156
[2022-01-31 20:00:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164
[2022-01-31 20:00:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172
[2022-01-31 20:00:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180
[2022-01-31 20:00:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188
[2022-01-31 20:00:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196
[2022-01-31 20:00:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204
[2022-01-31 20:00:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212
[2022-01-31 20:00:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220
[2022-01-31 20:00:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228
[2022-01-31 20:00:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236
[2022-01-31 20:00:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244
[2022-01-31 20:00:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252
[2022-01-31 20:00:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260
[2022-01-31 20:00:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268
[2022-01-31 20:00:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276
[2022-01-31 20:00:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284
[2022-01-31 20:00:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292
[2022-01-31 20:00:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300
[2022-01-31 20:00:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308
[2022-01-31 20:00:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316
[2022-01-31 20:00:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324
[2022-01-31 20:00:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332
[2022-01-31 20:00:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:00:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 20:00:58,215 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 20:00:58,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235813708]
[2022-01-31 20:00:58,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [235813708] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 20:00:58,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 20:00:58,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38
[2022-01-31 20:00:58,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664110951]
[2022-01-31 20:00:58,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 20:00:58,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states
[2022-01-31 20:00:58,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 20:00:58,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2022-01-31 20:00:58,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=635, Invalid=771, Unknown=0, NotChecked=0, Total=1406
[2022-01-31 20:00:58,217 INFO L87 Difference]: Start difference. First operand 471 states and 504 transitions. Second operand has 38 states, 38 states have (on average 2.973684210526316) internal successors, (113), 37 states have internal predecessors, (113), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 20:01:00,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 20:01:00,529 INFO L93 Difference]: Finished difference Result 962 states and 1059 transitions.
[2022-01-31 20:01:00,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2022-01-31 20:01:00,529 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.973684210526316) internal successors, (113), 37 states have internal predecessors, (113), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 344
[2022-01-31 20:01:00,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 20:01:00,531 INFO L225 Difference]: With dead ends: 962
[2022-01-31 20:01:00,531 INFO L226 Difference]: Without dead ends: 721
[2022-01-31 20:01:00,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1965, Invalid=3291, Unknown=0, NotChecked=0, Total=5256
[2022-01-31 20:01:00,531 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 284 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 20:01:00,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 27 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 20:01:00,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states.
[2022-01-31 20:01:01,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 473.
[2022-01-31 20:01:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 378 states have (on average 1.0132275132275133) internal successors, (383), 380 states have internal predecessors, (383), 62 states have call successors, (62), 33 states have call predecessors, (62), 32 states have return successors, (61), 59 states have call predecessors, (61), 61 states have call successors, (61)
[2022-01-31 20:01:01,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 506 transitions.
[2022-01-31 20:01:01,369 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 506 transitions. Word has length 344
[2022-01-31 20:01:01,369 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 20:01:01,369 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 506 transitions.
[2022-01-31 20:01:01,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.973684210526316) internal successors, (113), 37 states have internal predecessors, (113), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 20:01:01,369 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 506 transitions.
[2022-01-31 20:01:01,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346
[2022-01-31 20:01:01,370 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 20:01:01,370 INFO L514 BasicCegarLoop]: trace histogram [34, 33, 33, 30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 20:01:01,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149
[2022-01-31 20:01:01,371 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 20:01:01,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 20:01:01,371 INFO L85 PathProgramCache]: Analyzing trace with hash -842807744, now seen corresponding path program 113 times
[2022-01-31 20:01:01,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 20:01:01,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228043169]
[2022-01-31 20:01:01,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 20:01:01,372 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 20:01:01,372 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 20:01:01,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 20:01:01,375 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 20:01:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 20:01:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109
[2022-01-31 20:01:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117
[2022-01-31 20:01:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125
[2022-01-31 20:01:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133
[2022-01-31 20:01:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141
[2022-01-31 20:01:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149
[2022-01-31 20:01:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157
[2022-01-31 20:01:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165
[2022-01-31 20:01:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173
[2022-01-31 20:01:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181
[2022-01-31 20:01:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189
[2022-01-31 20:01:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197
[2022-01-31 20:01:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205
[2022-01-31 20:01:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213
[2022-01-31 20:01:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221
[2022-01-31 20:01:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229
[2022-01-31 20:01:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237
[2022-01-31 20:01:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245
[2022-01-31 20:01:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253
[2022-01-31 20:01:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261
[2022-01-31 20:01:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269
[2022-01-31 20:01:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277
[2022-01-31 20:01:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285
[2022-01-31 20:01:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293
[2022-01-31 20:01:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301
[2022-01-31 20:01:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309
[2022-01-31 20:01:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317
[2022-01-31 20:01:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325
[2022-01-31 20:01:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333
[2022-01-31 20:01:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 20:01:06,114 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 20:01:06,114 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 20:01:06,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228043169]
[2022-01-31 20:01:06,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [228043169] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 20:01:06,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 20:01:06,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100
[2022-01-31 20:01:06,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709107454]
[2022-01-31 20:01:06,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 20:01:06,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states
[2022-01-31 20:01:06,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 20:01:06,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants.
[2022-01-31 20:01:06,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=9685, Unknown=0, NotChecked=0, Total=9900
[2022-01-31 20:01:06,116 INFO L87 Difference]: Start difference. First operand 473 states and 506 transitions. Second operand has 100 states, 99 states have (on average 2.01010101010101) internal successors, (199), 98 states have internal predecessors, (199), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30)