/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/array-examples/standard_init1_ground-1.i
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-d966a43
[2022-01-31 17:29:56,803 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-01-31 17:29:56,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-31 17:29:56,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-31 17:29:56,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-31 17:29:56,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-31 17:29:56,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-31 17:29:56,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-31 17:29:56,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-31 17:29:56,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-31 17:29:56,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-01-31 17:29:56,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-31 17:29:56,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-31 17:29:56,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-31 17:29:56,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-31 17:29:56,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-31 17:29:56,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-31 17:29:56,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-31 17:29:56,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-31 17:29:56,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-31 17:29:56,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-31 17:29:56,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-31 17:29:56,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-01-31 17:29:56,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-31 17:29:56,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-31 17:29:56,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-31 17:29:56,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-31 17:29:56,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-31 17:29:56,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-31 17:29:56,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-31 17:29:56,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-31 17:29:56,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-31 17:29:56,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-31 17:29:56,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-31 17:29:56,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-31 17:29:56,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-31 17:29:56,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-31 17:29:56,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-31 17:29:56,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-31 17:29:56,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-31 17:29:56,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-01-31 17:29:56,900 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf
[2022-01-31 17:29:56,908 INFO L113 SettingsManager]: Loading preferences was successful
[2022-01-31 17:29:56,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-31 17:29:56,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-31 17:29:56,910 INFO L138 SettingsManager]: * sizeof long=4
[2022-01-31 17:29:56,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-01-31 17:29:56,910 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-01-31 17:29:56,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-01-31 17:29:56,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-01-31 17:29:56,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-31 17:29:56,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-01-31 17:29:56,911 INFO L138 SettingsManager]: * sizeof long double=12
[2022-01-31 17:29:56,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-01-31 17:29:56,911 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-01-31 17:29:56,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-01-31 17:29:56,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-31 17:29:56,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-01-31 17:29:56,912 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-01-31 17:29:56,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-01-31 17:29:56,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-31 17:29:56,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-31 17:29:56,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2022-01-31 17:29:56,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-31 17:29:56,912 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN
[2022-01-31 17:29:56,913 INFO L138 SettingsManager]: * Use separate solver for trace checks=false
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-31 17:29:57,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-31 17:29:57,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-31 17:29:57,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-31 17:29:57,166 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-01-31 17:29:57,167 INFO L275 PluginConnector]: CDTParser initialized
[2022-01-31 17:29:57,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init1_ground-1.i
[2022-01-31 17:29:57,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10afd755b/79d98bc8715a4b57b5a1da7d6fb1fcff/FLAGb01102b41
[2022-01-31 17:29:57,622 INFO L306 CDTParser]: Found 1 translation units.
[2022-01-31 17:29:57,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init1_ground-1.i
[2022-01-31 17:29:57,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10afd755b/79d98bc8715a4b57b5a1da7d6fb1fcff/FLAGb01102b41
[2022-01-31 17:29:57,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10afd755b/79d98bc8715a4b57b5a1da7d6fb1fcff
[2022-01-31 17:29:57,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-31 17:29:57,644 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2022-01-31 17:29:57,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-31 17:29:57,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-31 17:29:57,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-31 17:29:57,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:29:57" (1/1) ...
[2022-01-31 17:29:57,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dc11fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:29:57, skipping insertion in model container
[2022-01-31 17:29:57,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:29:57" (1/1) ...
[2022-01-31 17:29:57,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-01-31 17:29:57,670 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-01-31 17:29:57,829 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init1_ground-1.i[816,829]
[2022-01-31 17:29:57,836 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-01-31 17:29:57,841 INFO L203 MainTranslator]: Completed pre-run
[2022-01-31 17:29:57,848 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init1_ground-1.i[816,829]
[2022-01-31 17:29:57,850 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-01-31 17:29:57,858 INFO L208 MainTranslator]: Completed translation
[2022-01-31 17:29:57,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:29:57 WrapperNode
[2022-01-31 17:29:57,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-31 17:29:57,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-31 17:29:57,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-31 17:29:57,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-01-31 17:29:57,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:29:57" (1/1) ...
[2022-01-31 17:29:57,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:29:57" (1/1) ...
[2022-01-31 17:29:57,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:29:57" (1/1) ...
[2022-01-31 17:29:57,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:29:57" (1/1) ...
[2022-01-31 17:29:57,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:29:57" (1/1) ...
[2022-01-31 17:29:57,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:29:57" (1/1) ...
[2022-01-31 17:29:57,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:29:57" (1/1) ...
[2022-01-31 17:29:57,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-31 17:29:57,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-31 17:29:57,889 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-01-31 17:29:57,889 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-01-31 17:29:57,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:29:57" (1/1) ...
[2022-01-31 17:29:57,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-31 17:29:57,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-31 17:29:57,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-01-31 17:29:57,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-01-31 17:29:57,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-01-31 17:29:57,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-31 17:29:57,961 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-01-31 17:29:57,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-01-31 17:29:57,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-01-31 17:29:57,961 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-01-31 17:29:57,961 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-01-31 17:29:57,961 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2022-01-31 17:29:57,961 INFO L130 BoogieDeclarations]: Found specification of procedure __assert
[2022-01-31 17:29:57,961 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-01-31 17:29:57,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-31 17:29:57,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-01-31 17:29:57,962 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-01-31 17:29:57,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-01-31 17:29:57,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-01-31 17:29:57,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-01-31 17:29:57,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-31 17:29:57,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-01-31 17:29:57,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-01-31 17:29:57,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-31 17:29:58,025 INFO L234 CfgBuilder]: Building ICFG
[2022-01-31 17:29:58,026 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-31 17:29:58,139 INFO L275 CfgBuilder]: Performing block encoding
[2022-01-31 17:29:58,142 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-31 17:29:58,143 INFO L299 CfgBuilder]: Removed 2 assume(true) statements.
[2022-01-31 17:29:58,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:29:58 BoogieIcfgContainer
[2022-01-31 17:29:58,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-31 17:29:58,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-31 17:29:58,145 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-01-31 17:29:58,162 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-01-31 17:29:58,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:29:57" (1/3) ...
[2022-01-31 17:29:58,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d025858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:29:58, skipping insertion in model container
[2022-01-31 17:29:58,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:29:57" (2/3) ...
[2022-01-31 17:29:58,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d025858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:29:58, skipping insertion in model container
[2022-01-31 17:29:58,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:29:58" (3/3) ...
[2022-01-31 17:29:58,164 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init1_ground-1.i
[2022-01-31 17:29:58,167 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2022-01-31 17:29:58,167 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-31 17:29:58,235 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-31 17:29:58,263 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN
[2022-01-31 17:29:58,263 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-31 17:29:58,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-01-31 17:29:58,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-31 17:29:58,291 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:58,291 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:58,291 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:58,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:58,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1867159069, now seen corresponding path program 1 times
[2022-01-31 17:29:58,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:58,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257952384]
[2022-01-31 17:29:58,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:58,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:58,353 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:58,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:58,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:58,475 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:58,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257952384]
[2022-01-31 17:29:58,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1257952384] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:58,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:58,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-31 17:29:58,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633999861]
[2022-01-31 17:29:58,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:58,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-31 17:29:58,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:58,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-31 17:29:58,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-31 17:29:58,508 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:58,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:58,539 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions.
[2022-01-31 17:29:58,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-01-31 17:29:58,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have 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 17:29:58,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:58,544 INFO L225 Difference]: With dead ends: 39
[2022-01-31 17:29:58,545 INFO L226 Difference]: Without dead ends: 18
[2022-01-31 17:29:58,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-31 17:29:58,549 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:58,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 26 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:29:58,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2022-01-31 17:29:58,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18.
[2022-01-31 17:29:58,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:29:58,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions.
[2022-01-31 17:29:58,585 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13
[2022-01-31 17:29:58,585 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:58,585 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions.
[2022-01-31 17:29:58,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:58,586 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions.
[2022-01-31 17:29:58,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-31 17:29:58,587 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:58,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:58,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-31 17:29:58,588 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:58,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:58,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1122206497, now seen corresponding path program 1 times
[2022-01-31 17:29:58,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:58,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429068907]
[2022-01-31 17:29:58,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:58,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:58,594 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:58,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:58,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:58,641 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:58,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429068907]
[2022-01-31 17:29:58,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1429068907] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:58,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:58,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 17:29:58,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513520620]
[2022-01-31 17:29:58,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:58,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 17:29:58,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:58,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 17:29:58,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 17:29:58,644 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:58,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:58,676 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions.
[2022-01-31 17:29:58,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 17:29:58,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have 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 17:29:58,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:58,677 INFO L225 Difference]: With dead ends: 30
[2022-01-31 17:29:58,677 INFO L226 Difference]: Without dead ends: 19
[2022-01-31 17:29:58,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 17:29:58,678 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:58,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 24 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:29:58,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2022-01-31 17:29:58,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2022-01-31 17:29:58,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:29:58,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions.
[2022-01-31 17:29:58,683 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 13
[2022-01-31 17:29:58,683 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:58,684 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions.
[2022-01-31 17:29:58,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:58,684 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions.
[2022-01-31 17:29:58,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-01-31 17:29:58,685 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:58,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:58,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-31 17:29:58,685 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:58,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:58,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1774182891, now seen corresponding path program 1 times
[2022-01-31 17:29:58,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:58,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164484641]
[2022-01-31 17:29:58,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:58,696 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:58,697 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:58,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:58,698 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:58,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:58,737 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:58,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164484641]
[2022-01-31 17:29:58,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1164484641] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:58,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:58,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-01-31 17:29:58,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096970800]
[2022-01-31 17:29:58,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:58,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-31 17:29:58,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:58,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-31 17:29:58,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-01-31 17:29:58,739 INFO L87 Difference]: Start difference. First operand 19 states and 20 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 17:29:58,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:58,793 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions.
[2022-01-31 17:29:58,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-01-31 17:29:58,794 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 17:29:58,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:58,794 INFO L225 Difference]: With dead ends: 31
[2022-01-31 17:29:58,794 INFO L226 Difference]: Without dead ends: 20
[2022-01-31 17:29:58,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-01-31 17:29:58,796 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:58,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 24 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:29:58,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2022-01-31 17:29:58,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2022-01-31 17:29:58,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:29:58,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions.
[2022-01-31 17:29:58,800 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14
[2022-01-31 17:29:58,800 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:58,801 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions.
[2022-01-31 17:29:58,801 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 17:29:58,801 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions.
[2022-01-31 17:29:58,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-01-31 17:29:58,801 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:58,801 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:58,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-01-31 17:29:58,802 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:58,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:58,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1367940703, now seen corresponding path program 2 times
[2022-01-31 17:29:58,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:58,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842171208]
[2022-01-31 17:29:58,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:58,804 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:58,804 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:58,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:58,805 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:58,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:58,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:58,867 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:58,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842171208]
[2022-01-31 17:29:58,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [842171208] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:58,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:58,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-01-31 17:29:58,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569819295]
[2022-01-31 17:29:58,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:58,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-31 17:29:58,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:58,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-31 17:29:58,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2022-01-31 17:29:58,872 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:58,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:58,941 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions.
[2022-01-31 17:29:58,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-01-31 17:29:58,942 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15
[2022-01-31 17:29:58,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:58,943 INFO L225 Difference]: With dead ends: 32
[2022-01-31 17:29:58,943 INFO L226 Difference]: Without dead ends: 21
[2022-01-31 17:29:58,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72
[2022-01-31 17:29:58,945 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:58,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:29:58,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2022-01-31 17:29:58,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21.
[2022-01-31 17:29:58,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:29:58,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions.
[2022-01-31 17:29:58,952 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 15
[2022-01-31 17:29:58,952 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:58,952 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions.
[2022-01-31 17:29:58,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:58,952 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions.
[2022-01-31 17:29:58,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2022-01-31 17:29:58,953 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:58,953 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:58,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-01-31 17:29:58,953 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:58,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:58,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1659334763, now seen corresponding path program 3 times
[2022-01-31 17:29:58,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:58,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863745747]
[2022-01-31 17:29:58,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:58,955 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:58,956 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:58,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:58,957 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:59,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:59,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:59,026 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:59,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863745747]
[2022-01-31 17:29:59,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1863745747] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:59,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:59,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-01-31 17:29:59,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595419669]
[2022-01-31 17:29:59,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:59,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-01-31 17:29:59,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:59,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-01-31 17:29:59,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-01-31 17:29:59,028 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 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 17:29:59,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:59,080 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions.
[2022-01-31 17:29:59,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-01-31 17:29:59,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 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 17:29:59,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:59,081 INFO L225 Difference]: With dead ends: 33
[2022-01-31 17:29:59,081 INFO L226 Difference]: Without dead ends: 22
[2022-01-31 17:29:59,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110
[2022-01-31 17:29:59,082 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:59,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:29:59,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2022-01-31 17:29:59,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2022-01-31 17:29:59,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.125) internal successors, (18), 16 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 17:29:59,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions.
[2022-01-31 17:29:59,085 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16
[2022-01-31 17:29:59,085 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:59,086 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions.
[2022-01-31 17:29:59,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 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 17:29:59,086 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions.
[2022-01-31 17:29:59,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-01-31 17:29:59,086 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:59,086 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:59,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-01-31 17:29:59,086 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:59,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:59,087 INFO L85 PathProgramCache]: Analyzing trace with hash 2102616031, now seen corresponding path program 4 times
[2022-01-31 17:29:59,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:59,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518319179]
[2022-01-31 17:29:59,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:59,088 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:59,088 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:59,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:59,089 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:59,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:59,137 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:59,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518319179]
[2022-01-31 17:29:59,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1518319179] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:59,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:59,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2022-01-31 17:29:59,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680329175]
[2022-01-31 17:29:59,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:59,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-01-31 17:29:59,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:59,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-01-31 17:29:59,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2022-01-31 17:29:59,139 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:59,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:59,194 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions.
[2022-01-31 17:29:59,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2022-01-31 17:29:59,195 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17
[2022-01-31 17:29:59,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:59,195 INFO L225 Difference]: With dead ends: 34
[2022-01-31 17:29:59,195 INFO L226 Difference]: Without dead ends: 23
[2022-01-31 17:29:59,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156
[2022-01-31 17:29:59,196 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:59,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 29 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:29:59,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2022-01-31 17:29:59,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2022-01-31 17:29:59,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 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 17:29:59,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions.
[2022-01-31 17:29:59,199 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17
[2022-01-31 17:29:59,199 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:59,199 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions.
[2022-01-31 17:29:59,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:59,199 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions.
[2022-01-31 17:29:59,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2022-01-31 17:29:59,200 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:59,200 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:59,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-01-31 17:29:59,200 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:59,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:59,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1335533845, now seen corresponding path program 5 times
[2022-01-31 17:29:59,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:59,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846781485]
[2022-01-31 17:29:59,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:59,202 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:59,202 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:59,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:59,203 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:59,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:59,261 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 17:29:59,261 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:59,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846781485]
[2022-01-31 17:29:59,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [846781485] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:59,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:59,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2022-01-31 17:29:59,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276252312]
[2022-01-31 17:29:59,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:59,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-01-31 17:29:59,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:59,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-01-31 17:29:59,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72
[2022-01-31 17:29:59,263 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:59,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:59,341 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions.
[2022-01-31 17:29:59,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2022-01-31 17:29:59,342 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18
[2022-01-31 17:29:59,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:59,342 INFO L225 Difference]: With dead ends: 35
[2022-01-31 17:29:59,342 INFO L226 Difference]: Without dead ends: 24
[2022-01-31 17:29:59,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210
[2022-01-31 17:29:59,343 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:59,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:29:59,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2022-01-31 17:29:59,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2022-01-31 17:29:59,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:29:59,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions.
[2022-01-31 17:29:59,347 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 18
[2022-01-31 17:29:59,347 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:59,347 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions.
[2022-01-31 17:29:59,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:59,347 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions.
[2022-01-31 17:29:59,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2022-01-31 17:29:59,348 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:59,348 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:59,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-01-31 17:29:59,348 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:59,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:59,348 INFO L85 PathProgramCache]: Analyzing trace with hash -543997601, now seen corresponding path program 6 times
[2022-01-31 17:29:59,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:59,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605577702]
[2022-01-31 17:29:59,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:59,350 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:59,350 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:59,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:59,351 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:59,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:59,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:59,437 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:59,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605577702]
[2022-01-31 17:29:59,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [605577702] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:59,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:59,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2022-01-31 17:29:59,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464375735]
[2022-01-31 17:29:59,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:59,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-01-31 17:29:59,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:59,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-01-31 17:29:59,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90
[2022-01-31 17:29:59,439 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:59,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:59,544 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions.
[2022-01-31 17:29:59,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2022-01-31 17:29:59,545 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have 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 17:29:59,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:59,545 INFO L225 Difference]: With dead ends: 36
[2022-01-31 17:29:59,545 INFO L226 Difference]: Without dead ends: 25
[2022-01-31 17:29:59,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272
[2022-01-31 17:29:59,546 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:59,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 29 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:29:59,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2022-01-31 17:29:59,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2022-01-31 17:29:59,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:29:59,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions.
[2022-01-31 17:29:59,552 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 19
[2022-01-31 17:29:59,552 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:59,553 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions.
[2022-01-31 17:29:59,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:59,553 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions.
[2022-01-31 17:29:59,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2022-01-31 17:29:59,553 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:59,553 INFO L514 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:59,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-01-31 17:29:59,553 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:59,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:59,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1776177813, now seen corresponding path program 7 times
[2022-01-31 17:29:59,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:59,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577337069]
[2022-01-31 17:29:59,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:59,556 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:59,556 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:59,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:59,557 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:59,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:59,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:59,673 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:59,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577337069]
[2022-01-31 17:29:59,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [577337069] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:59,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:59,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2022-01-31 17:29:59,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194864360]
[2022-01-31 17:29:59,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:59,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-01-31 17:29:59,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:59,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-01-31 17:29:59,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110
[2022-01-31 17:29:59,674 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 11 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 17:29:59,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:59,776 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions.
[2022-01-31 17:29:59,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2022-01-31 17:29:59,777 INFO L78 Accepts]: Start accepts. Automaton has has 11 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 17:29:59,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:59,777 INFO L225 Difference]: With dead ends: 37
[2022-01-31 17:29:59,777 INFO L226 Difference]: Without dead ends: 26
[2022-01-31 17:29:59,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342
[2022-01-31 17:29:59,778 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:59,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:29:59,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2022-01-31 17:29:59,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26.
[2022-01-31 17:29:59,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.1) internal successors, (22), 20 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 17:29:59,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions.
[2022-01-31 17:29:59,782 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 20
[2022-01-31 17:29:59,782 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:59,782 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions.
[2022-01-31 17:29:59,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 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 17:29:59,782 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions.
[2022-01-31 17:29:59,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-01-31 17:29:59,782 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:59,782 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:59,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-01-31 17:29:59,783 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:59,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:59,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1319058721, now seen corresponding path program 8 times
[2022-01-31 17:29:59,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:59,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405151063]
[2022-01-31 17:29:59,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:59,784 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:59,785 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:59,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:59,785 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:59,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:29:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:29:59,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:29:59,858 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:29:59,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405151063]
[2022-01-31 17:29:59,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1405151063] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:29:59,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:29:59,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2022-01-31 17:29:59,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590205261]
[2022-01-31 17:29:59,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:29:59,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-01-31 17:29:59,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:29:59,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-01-31 17:29:59,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132
[2022-01-31 17:29:59,859 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:59,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:29:59,969 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions.
[2022-01-31 17:29:59,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2022-01-31 17:29:59,969 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21
[2022-01-31 17:29:59,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:29:59,970 INFO L225 Difference]: With dead ends: 38
[2022-01-31 17:29:59,970 INFO L226 Difference]: Without dead ends: 27
[2022-01-31 17:29:59,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420
[2022-01-31 17:29:59,971 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:29:59,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:29:59,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2022-01-31 17:29:59,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2022-01-31 17:29:59,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:29:59,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions.
[2022-01-31 17:29:59,974 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 21
[2022-01-31 17:29:59,974 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:29:59,975 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions.
[2022-01-31 17:29:59,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:29:59,975 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions.
[2022-01-31 17:29:59,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2022-01-31 17:29:59,975 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:29:59,975 INFO L514 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:29:59,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-01-31 17:29:59,976 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:29:59,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:29:59,976 INFO L85 PathProgramCache]: Analyzing trace with hash -33268757, now seen corresponding path program 9 times
[2022-01-31 17:29:59,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:29:59,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644249831]
[2022-01-31 17:29:59,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:29:59,977 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:29:59,977 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:29:59,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:29:59,978 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:29:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:00,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:00,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:00,059 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:00,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644249831]
[2022-01-31 17:30:00,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [644249831] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:00,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:00,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2022-01-31 17:30:00,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290099363]
[2022-01-31 17:30:00,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:00,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2022-01-31 17:30:00,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:00,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2022-01-31 17:30:00,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156
[2022-01-31 17:30:00,060 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:00,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:00,179 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions.
[2022-01-31 17:30:00,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2022-01-31 17:30:00,180 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22
[2022-01-31 17:30:00,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:00,180 INFO L225 Difference]: With dead ends: 39
[2022-01-31 17:30:00,181 INFO L226 Difference]: Without dead ends: 28
[2022-01-31 17:30:00,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506
[2022-01-31 17:30:00,182 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:00,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 29 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:30:00,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2022-01-31 17:30:00,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2022-01-31 17:30:00,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 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 17:30:00,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions.
[2022-01-31 17:30:00,185 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 22
[2022-01-31 17:30:00,185 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:00,185 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions.
[2022-01-31 17:30:00,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:00,186 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions.
[2022-01-31 17:30:00,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2022-01-31 17:30:00,186 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:00,186 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:00,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2022-01-31 17:30:00,186 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:00,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:00,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1171514463, now seen corresponding path program 10 times
[2022-01-31 17:30:00,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:00,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488133844]
[2022-01-31 17:30:00,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:00,188 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:00,188 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:00,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:00,189 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:00,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:00,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:00,290 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:00,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488133844]
[2022-01-31 17:30:00,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1488133844] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:00,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:00,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2022-01-31 17:30:00,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812353019]
[2022-01-31 17:30:00,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:00,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2022-01-31 17:30:00,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:00,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2022-01-31 17:30:00,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182
[2022-01-31 17:30:00,292 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 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 17:30:00,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:00,426 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions.
[2022-01-31 17:30:00,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2022-01-31 17:30:00,426 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 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 17:30:00,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:00,426 INFO L225 Difference]: With dead ends: 40
[2022-01-31 17:30:00,427 INFO L226 Difference]: Without dead ends: 29
[2022-01-31 17:30:00,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600
[2022-01-31 17:30:00,427 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:00,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 29 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:30:00,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2022-01-31 17:30:00,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2022-01-31 17:30:00,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:00,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions.
[2022-01-31 17:30:00,430 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 23
[2022-01-31 17:30:00,430 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:00,430 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions.
[2022-01-31 17:30:00,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 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 17:30:00,430 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions.
[2022-01-31 17:30:00,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-01-31 17:30:00,431 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:00,431 INFO L514 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:00,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2022-01-31 17:30:00,431 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:00,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:00,431 INFO L85 PathProgramCache]: Analyzing trace with hash -134911381, now seen corresponding path program 11 times
[2022-01-31 17:30:00,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:00,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520533264]
[2022-01-31 17:30:00,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:00,432 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:00,433 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:00,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:00,433 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:00,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:00,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:00,542 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:00,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520533264]
[2022-01-31 17:30:00,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [520533264] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:00,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:00,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2022-01-31 17:30:00,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356793606]
[2022-01-31 17:30:00,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:00,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-01-31 17:30:00,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:00,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-01-31 17:30:00,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210
[2022-01-31 17:30:00,544 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:00,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:00,694 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions.
[2022-01-31 17:30:00,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2022-01-31 17:30:00,694 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24
[2022-01-31 17:30:00,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:00,695 INFO L225 Difference]: With dead ends: 41
[2022-01-31 17:30:00,695 INFO L226 Difference]: Without dead ends: 30
[2022-01-31 17:30:00,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702
[2022-01-31 17:30:00,696 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:00,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 29 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:30:00,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2022-01-31 17:30:00,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2022-01-31 17:30:00,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:00,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions.
[2022-01-31 17:30:00,699 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 24
[2022-01-31 17:30:00,699 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:00,699 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions.
[2022-01-31 17:30:00,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:00,699 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions.
[2022-01-31 17:30:00,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2022-01-31 17:30:00,700 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:00,700 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:00,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2022-01-31 17:30:00,700 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:00,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:00,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1979406881, now seen corresponding path program 12 times
[2022-01-31 17:30:00,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:00,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133238568]
[2022-01-31 17:30:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:00,702 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:00,702 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:00,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:00,703 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:00,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:00,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:00,824 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:00,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133238568]
[2022-01-31 17:30:00,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [133238568] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:00,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:00,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2022-01-31 17:30:00,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554719072]
[2022-01-31 17:30:00,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:00,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-01-31 17:30:00,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:00,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-01-31 17:30:00,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240
[2022-01-31 17:30:00,825 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:00,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:00,984 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions.
[2022-01-31 17:30:00,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2022-01-31 17:30:00,984 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have 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 17:30:00,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:00,984 INFO L225 Difference]: With dead ends: 42
[2022-01-31 17:30:00,984 INFO L226 Difference]: Without dead ends: 31
[2022-01-31 17:30:00,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812
[2022-01-31 17:30:00,985 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:00,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:30:00,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2022-01-31 17:30:00,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31.
[2022-01-31 17:30:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:00,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions.
[2022-01-31 17:30:00,988 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 25
[2022-01-31 17:30:00,988 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:00,988 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions.
[2022-01-31 17:30:00,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:00,988 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions.
[2022-01-31 17:30:00,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-01-31 17:30:00,989 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:00,989 INFO L514 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:00,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2022-01-31 17:30:00,989 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:00,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:00,991 INFO L85 PathProgramCache]: Analyzing trace with hash 970774763, now seen corresponding path program 13 times
[2022-01-31 17:30:00,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:00,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512019704]
[2022-01-31 17:30:00,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:00,992 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:00,992 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:00,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:00,993 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:01,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:01,141 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:01,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512019704]
[2022-01-31 17:30:01,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1512019704] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:01,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:01,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17
[2022-01-31 17:30:01,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259003439]
[2022-01-31 17:30:01,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:01,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2022-01-31 17:30:01,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:01,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2022-01-31 17:30:01,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272
[2022-01-31 17:30:01,142 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 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 17:30:01,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:01,322 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions.
[2022-01-31 17:30:01,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2022-01-31 17:30:01,322 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 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 17:30:01,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:01,323 INFO L225 Difference]: With dead ends: 43
[2022-01-31 17:30:01,323 INFO L226 Difference]: Without dead ends: 32
[2022-01-31 17:30:01,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930
[2022-01-31 17:30:01,323 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:01,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:30:01,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2022-01-31 17:30:01,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32.
[2022-01-31 17:30:01,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:01,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions.
[2022-01-31 17:30:01,326 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 26
[2022-01-31 17:30:01,326 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:01,326 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions.
[2022-01-31 17:30:01,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 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 17:30:01,326 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions.
[2022-01-31 17:30:01,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2022-01-31 17:30:01,327 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:01,327 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:01,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2022-01-31 17:30:01,327 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:01,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:01,327 INFO L85 PathProgramCache]: Analyzing trace with hash -2062874785, now seen corresponding path program 14 times
[2022-01-31 17:30:01,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:01,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341175331]
[2022-01-31 17:30:01,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:01,328 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:01,328 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:01,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:01,329 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:01,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:01,467 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:01,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341175331]
[2022-01-31 17:30:01,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [341175331] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:01,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:01,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18
[2022-01-31 17:30:01,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005746688]
[2022-01-31 17:30:01,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:01,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2022-01-31 17:30:01,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:01,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2022-01-31 17:30:01,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306
[2022-01-31 17:30:01,468 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 18 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 17 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:01,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:01,641 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions.
[2022-01-31 17:30:01,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2022-01-31 17:30:01,641 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 17 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27
[2022-01-31 17:30:01,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:01,642 INFO L225 Difference]: With dead ends: 44
[2022-01-31 17:30:01,642 INFO L226 Difference]: Without dead ends: 33
[2022-01-31 17:30:01,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056
[2022-01-31 17:30:01,643 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:01,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:30:01,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2022-01-31 17:30:01,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33.
[2022-01-31 17:30:01,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:01,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions.
[2022-01-31 17:30:01,646 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 27
[2022-01-31 17:30:01,646 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:01,646 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions.
[2022-01-31 17:30:01,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 17 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:01,646 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions.
[2022-01-31 17:30:01,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2022-01-31 17:30:01,646 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:01,646 INFO L514 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:01,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2022-01-31 17:30:01,646 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:01,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:01,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1616730261, now seen corresponding path program 15 times
[2022-01-31 17:30:01,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:01,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182663464]
[2022-01-31 17:30:01,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:01,648 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:01,648 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:01,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:01,649 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:01,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:01,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:01,812 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:01,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182663464]
[2022-01-31 17:30:01,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [182663464] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:01,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:01,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19
[2022-01-31 17:30:01,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905230971]
[2022-01-31 17:30:01,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:01,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2022-01-31 17:30:01,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:01,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2022-01-31 17:30:01,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342
[2022-01-31 17:30:01,813 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:01,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:01,948 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions.
[2022-01-31 17:30:01,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2022-01-31 17:30:01,948 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28
[2022-01-31 17:30:01,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:01,949 INFO L225 Difference]: With dead ends: 45
[2022-01-31 17:30:01,949 INFO L226 Difference]: Without dead ends: 34
[2022-01-31 17:30:01,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190
[2022-01-31 17:30:01,950 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:01,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:30:01,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2022-01-31 17:30:01,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34.
[2022-01-31 17:30:01,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:01,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions.
[2022-01-31 17:30:01,966 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 28
[2022-01-31 17:30:01,967 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:01,967 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions.
[2022-01-31 17:30:01,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:01,967 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions.
[2022-01-31 17:30:01,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2022-01-31 17:30:01,968 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:01,969 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:01,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2022-01-31 17:30:01,969 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:01,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:01,969 INFO L85 PathProgramCache]: Analyzing trace with hash -671151905, now seen corresponding path program 16 times
[2022-01-31 17:30:01,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:01,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075321928]
[2022-01-31 17:30:01,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:01,970 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:01,971 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:01,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:01,972 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:02,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:02,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:02,103 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:02,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075321928]
[2022-01-31 17:30:02,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2075321928] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:02,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:02,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20
[2022-01-31 17:30:02,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524178735]
[2022-01-31 17:30:02,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:02,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2022-01-31 17:30:02,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:02,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2022-01-31 17:30:02,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380
[2022-01-31 17:30:02,104 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 20 states, 20 states have (on average 1.25) internal successors, (25), 19 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:02,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:02,274 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions.
[2022-01-31 17:30:02,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2022-01-31 17:30:02,274 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.25) internal successors, (25), 19 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29
[2022-01-31 17:30:02,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:02,274 INFO L225 Difference]: With dead ends: 46
[2022-01-31 17:30:02,274 INFO L226 Difference]: Without dead ends: 35
[2022-01-31 17:30:02,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332
[2022-01-31 17:30:02,275 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:02,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:30:02,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2022-01-31 17:30:02,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35.
[2022-01-31 17:30:02,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions.
[2022-01-31 17:30:02,278 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 29
[2022-01-31 17:30:02,278 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:02,278 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions.
[2022-01-31 17:30:02,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.25) internal successors, (25), 19 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:02,278 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions.
[2022-01-31 17:30:02,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2022-01-31 17:30:02,278 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:02,278 INFO L514 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:02,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2022-01-31 17:30:02,279 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:02,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:02,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1422993941, now seen corresponding path program 17 times
[2022-01-31 17:30:02,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:02,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466264143]
[2022-01-31 17:30:02,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:02,282 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:02,282 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:02,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:02,283 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:02,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:02,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:02,458 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:02,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466264143]
[2022-01-31 17:30:02,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1466264143] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:02,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:02,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21
[2022-01-31 17:30:02,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811930073]
[2022-01-31 17:30:02,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:02,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2022-01-31 17:30:02,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:02,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2022-01-31 17:30:02,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420
[2022-01-31 17:30:02,460 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 21 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 20 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:02,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:02,616 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions.
[2022-01-31 17:30:02,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2022-01-31 17:30:02,616 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 20 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30
[2022-01-31 17:30:02,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:02,617 INFO L225 Difference]: With dead ends: 47
[2022-01-31 17:30:02,617 INFO L226 Difference]: Without dead ends: 36
[2022-01-31 17:30:02,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482
[2022-01-31 17:30:02,618 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:02,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:30:02,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2022-01-31 17:30:02,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36.
[2022-01-31 17:30:02,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:02,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions.
[2022-01-31 17:30:02,620 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 30
[2022-01-31 17:30:02,620 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:02,620 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions.
[2022-01-31 17:30:02,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 20 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:02,621 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions.
[2022-01-31 17:30:02,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2022-01-31 17:30:02,621 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:02,621 INFO L514 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:02,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2022-01-31 17:30:02,621 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:02,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:02,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1039706719, now seen corresponding path program 18 times
[2022-01-31 17:30:02,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:02,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079187222]
[2022-01-31 17:30:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:02,622 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:02,622 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:02,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:02,623 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:02,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:02,789 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 17:30:02,789 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:02,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079187222]
[2022-01-31 17:30:02,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2079187222] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:02,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:02,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22
[2022-01-31 17:30:02,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091951033]
[2022-01-31 17:30:02,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:02,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2022-01-31 17:30:02,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:02,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2022-01-31 17:30:02,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462
[2022-01-31 17:30:02,790 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 22 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 21 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:02,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:02,969 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions.
[2022-01-31 17:30:02,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2022-01-31 17:30:02,969 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 21 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31
[2022-01-31 17:30:02,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:02,970 INFO L225 Difference]: With dead ends: 48
[2022-01-31 17:30:02,970 INFO L226 Difference]: Without dead ends: 37
[2022-01-31 17:30:02,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640
[2022-01-31 17:30:02,971 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:02,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:30:02,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2022-01-31 17:30:02,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37.
[2022-01-31 17:30:02,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:02,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions.
[2022-01-31 17:30:02,977 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 31
[2022-01-31 17:30:02,977 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:02,977 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions.
[2022-01-31 17:30:02,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 21 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:02,977 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions.
[2022-01-31 17:30:02,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2022-01-31 17:30:02,977 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:02,978 INFO L514 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:02,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2022-01-31 17:30:02,978 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:02,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:02,978 INFO L85 PathProgramCache]: Analyzing trace with hash 74015851, now seen corresponding path program 19 times
[2022-01-31 17:30:02,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:02,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713403803]
[2022-01-31 17:30:02,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:02,979 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:02,979 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:02,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:02,980 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:03,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:03,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:03,168 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:03,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713403803]
[2022-01-31 17:30:03,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [713403803] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:03,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:03,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23
[2022-01-31 17:30:03,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724937794]
[2022-01-31 17:30:03,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:03,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2022-01-31 17:30:03,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:03,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2022-01-31 17:30:03,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506
[2022-01-31 17:30:03,170 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 23 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 22 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:03,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:03,367 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions.
[2022-01-31 17:30:03,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2022-01-31 17:30:03,368 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 22 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32
[2022-01-31 17:30:03,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:03,368 INFO L225 Difference]: With dead ends: 49
[2022-01-31 17:30:03,368 INFO L226 Difference]: Without dead ends: 38
[2022-01-31 17:30:03,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806
[2022-01-31 17:30:03,370 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:03,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:30:03,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2022-01-31 17:30:03,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38.
[2022-01-31 17:30:03,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:03,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions.
[2022-01-31 17:30:03,387 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 32
[2022-01-31 17:30:03,387 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:03,388 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions.
[2022-01-31 17:30:03,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 22 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:03,388 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions.
[2022-01-31 17:30:03,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2022-01-31 17:30:03,389 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:03,389 INFO L514 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:03,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20
[2022-01-31 17:30:03,389 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:03,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:03,389 INFO L85 PathProgramCache]: Analyzing trace with hash 202370015, now seen corresponding path program 20 times
[2022-01-31 17:30:03,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:03,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476122916]
[2022-01-31 17:30:03,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:03,391 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:03,391 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:03,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:03,392 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:03,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:03,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:03,595 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:03,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476122916]
[2022-01-31 17:30:03,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [476122916] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:03,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:03,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24
[2022-01-31 17:30:03,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915977560]
[2022-01-31 17:30:03,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:03,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-01-31 17:30:03,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:03,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-01-31 17:30:03,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552
[2022-01-31 17:30:03,596 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 24 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 23 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:03,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:03,821 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions.
[2022-01-31 17:30:03,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2022-01-31 17:30:03,822 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 23 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33
[2022-01-31 17:30:03,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:03,823 INFO L225 Difference]: With dead ends: 50
[2022-01-31 17:30:03,823 INFO L226 Difference]: Without dead ends: 39
[2022-01-31 17:30:03,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980
[2022-01-31 17:30:03,824 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:03,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:30:03,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2022-01-31 17:30:03,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39.
[2022-01-31 17:30:03,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:03,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions.
[2022-01-31 17:30:03,826 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 33
[2022-01-31 17:30:03,827 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:03,827 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions.
[2022-01-31 17:30:03,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 23 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:03,827 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions.
[2022-01-31 17:30:03,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2022-01-31 17:30:03,827 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:03,827 INFO L514 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:03,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21
[2022-01-31 17:30:03,827 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:03,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:03,828 INFO L85 PathProgramCache]: Analyzing trace with hash -113618197, now seen corresponding path program 21 times
[2022-01-31 17:30:03,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:03,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971455601]
[2022-01-31 17:30:03,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:03,829 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:03,829 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:03,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:03,830 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:04,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:04,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:04,043 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:04,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971455601]
[2022-01-31 17:30:04,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [971455601] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:04,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:04,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25
[2022-01-31 17:30:04,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008643290]
[2022-01-31 17:30:04,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:04,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2022-01-31 17:30:04,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:04,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2022-01-31 17:30:04,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600
[2022-01-31 17:30:04,044 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 25 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:04,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:04,248 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions.
[2022-01-31 17:30:04,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2022-01-31 17:30:04,248 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34
[2022-01-31 17:30:04,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:04,249 INFO L225 Difference]: With dead ends: 51
[2022-01-31 17:30:04,249 INFO L226 Difference]: Without dead ends: 40
[2022-01-31 17:30:04,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162
[2022-01-31 17:30:04,250 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:04,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:30:04,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2022-01-31 17:30:04,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40.
[2022-01-31 17:30:04,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:04,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions.
[2022-01-31 17:30:04,252 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 34
[2022-01-31 17:30:04,252 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:04,252 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions.
[2022-01-31 17:30:04,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:04,253 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions.
[2022-01-31 17:30:04,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2022-01-31 17:30:04,253 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:04,253 INFO L514 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:04,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22
[2022-01-31 17:30:04,253 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:04,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:04,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1319318177, now seen corresponding path program 22 times
[2022-01-31 17:30:04,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:04,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071456196]
[2022-01-31 17:30:04,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:04,254 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:04,254 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:04,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:04,259 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:04,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:04,480 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:04,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071456196]
[2022-01-31 17:30:04,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2071456196] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:04,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:04,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26
[2022-01-31 17:30:04,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621962852]
[2022-01-31 17:30:04,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:04,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-01-31 17:30:04,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:04,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-01-31 17:30:04,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650
[2022-01-31 17:30:04,481 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 26 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 25 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:04,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:04,712 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions.
[2022-01-31 17:30:04,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2022-01-31 17:30:04,713 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 25 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35
[2022-01-31 17:30:04,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:04,713 INFO L225 Difference]: With dead ends: 52
[2022-01-31 17:30:04,713 INFO L226 Difference]: Without dead ends: 41
[2022-01-31 17:30:04,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352
[2022-01-31 17:30:04,715 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:04,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:30:04,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2022-01-31 17:30:04,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41.
[2022-01-31 17:30:04,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions.
[2022-01-31 17:30:04,717 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 35
[2022-01-31 17:30:04,718 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:04,718 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions.
[2022-01-31 17:30:04,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 25 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:04,718 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions.
[2022-01-31 17:30:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-01-31 17:30:04,718 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:04,718 INFO L514 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:04,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23
[2022-01-31 17:30:04,718 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:04,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:04,719 INFO L85 PathProgramCache]: Analyzing trace with hash -41311893, now seen corresponding path program 23 times
[2022-01-31 17:30:04,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:04,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130576736]
[2022-01-31 17:30:04,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:04,720 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:04,720 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:04,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:04,721 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:05,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:05,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:05,044 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:05,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130576736]
[2022-01-31 17:30:05,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1130576736] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:05,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:05,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27
[2022-01-31 17:30:05,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469033773]
[2022-01-31 17:30:05,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:05,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2022-01-31 17:30:05,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:05,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2022-01-31 17:30:05,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702
[2022-01-31 17:30:05,046 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 27 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 26 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:05,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:05,400 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions.
[2022-01-31 17:30:05,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2022-01-31 17:30:05,400 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 26 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36
[2022-01-31 17:30:05,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:05,400 INFO L225 Difference]: With dead ends: 53
[2022-01-31 17:30:05,401 INFO L226 Difference]: Without dead ends: 42
[2022-01-31 17:30:05,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550
[2022-01-31 17:30:05,402 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:05,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:05,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2022-01-31 17:30:05,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42.
[2022-01-31 17:30:05,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:05,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions.
[2022-01-31 17:30:05,406 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 36
[2022-01-31 17:30:05,407 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:05,407 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions.
[2022-01-31 17:30:05,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 26 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:05,407 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions.
[2022-01-31 17:30:05,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2022-01-31 17:30:05,407 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:05,407 INFO L514 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:05,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24
[2022-01-31 17:30:05,408 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:05,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:05,408 INFO L85 PathProgramCache]: Analyzing trace with hash 922177247, now seen corresponding path program 24 times
[2022-01-31 17:30:05,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:05,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684543717]
[2022-01-31 17:30:05,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:05,409 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:05,410 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:05,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:05,411 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:05,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:05,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:05,675 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:05,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684543717]
[2022-01-31 17:30:05,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [684543717] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:05,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:05,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28
[2022-01-31 17:30:05,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219456067]
[2022-01-31 17:30:05,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:05,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-01-31 17:30:05,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:05,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-01-31 17:30:05,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756
[2022-01-31 17:30:05,677 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 28 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 27 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:06,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:06,057 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions.
[2022-01-31 17:30:06,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2022-01-31 17:30:06,057 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 27 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37
[2022-01-31 17:30:06,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:06,058 INFO L225 Difference]: With dead ends: 54
[2022-01-31 17:30:06,058 INFO L226 Difference]: Without dead ends: 43
[2022-01-31 17:30:06,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756
[2022-01-31 17:30:06,059 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:06,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:06,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2022-01-31 17:30:06,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43.
[2022-01-31 17:30:06,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:06,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions.
[2022-01-31 17:30:06,062 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 37
[2022-01-31 17:30:06,062 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:06,062 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions.
[2022-01-31 17:30:06,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 27 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:06,062 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions.
[2022-01-31 17:30:06,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2022-01-31 17:30:06,062 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:06,062 INFO L514 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:06,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25
[2022-01-31 17:30:06,062 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:06,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:06,063 INFO L85 PathProgramCache]: Analyzing trace with hash 725569515, now seen corresponding path program 25 times
[2022-01-31 17:30:06,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:06,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343185618]
[2022-01-31 17:30:06,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:06,064 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:06,064 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:06,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:06,065 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:06,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:06,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:06,398 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:06,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343185618]
[2022-01-31 17:30:06,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1343185618] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:06,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:06,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29
[2022-01-31 17:30:06,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662124667]
[2022-01-31 17:30:06,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:06,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2022-01-31 17:30:06,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:06,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2022-01-31 17:30:06,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812
[2022-01-31 17:30:06,414 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 29 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 28 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:06,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:06,772 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions.
[2022-01-31 17:30:06,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2022-01-31 17:30:06,782 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 28 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38
[2022-01-31 17:30:06,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:06,783 INFO L225 Difference]: With dead ends: 55
[2022-01-31 17:30:06,783 INFO L226 Difference]: Without dead ends: 44
[2022-01-31 17:30:06,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970
[2022-01-31 17:30:06,790 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:06,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 24 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:30:06,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2022-01-31 17:30:06,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44.
[2022-01-31 17:30:06,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:06,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions.
[2022-01-31 17:30:06,793 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 38
[2022-01-31 17:30:06,793 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:06,793 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions.
[2022-01-31 17:30:06,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 28 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:06,793 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions.
[2022-01-31 17:30:06,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2022-01-31 17:30:06,793 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:06,793 INFO L514 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:06,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26
[2022-01-31 17:30:06,794 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:06,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:06,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1074302881, now seen corresponding path program 26 times
[2022-01-31 17:30:06,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:06,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808872449]
[2022-01-31 17:30:06,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:06,795 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:06,795 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:06,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:06,797 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:07,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:07,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:07,125 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:07,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808872449]
[2022-01-31 17:30:07,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [808872449] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:07,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:07,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30
[2022-01-31 17:30:07,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859172285]
[2022-01-31 17:30:07,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:07,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states
[2022-01-31 17:30:07,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:07,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2022-01-31 17:30:07,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870
[2022-01-31 17:30:07,127 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 30 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 29 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:07,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:07,494 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions.
[2022-01-31 17:30:07,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2022-01-31 17:30:07,495 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 29 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39
[2022-01-31 17:30:07,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:07,495 INFO L225 Difference]: With dead ends: 56
[2022-01-31 17:30:07,495 INFO L226 Difference]: Without dead ends: 45
[2022-01-31 17:30:07,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192
[2022-01-31 17:30:07,496 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:07,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:07,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2022-01-31 17:30:07,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45.
[2022-01-31 17:30:07,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:07,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions.
[2022-01-31 17:30:07,502 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 39
[2022-01-31 17:30:07,502 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:07,502 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions.
[2022-01-31 17:30:07,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 29 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:07,502 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions.
[2022-01-31 17:30:07,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2022-01-31 17:30:07,503 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:07,503 INFO L514 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:07,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27
[2022-01-31 17:30:07,503 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:07,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:07,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1035772309, now seen corresponding path program 27 times
[2022-01-31 17:30:07,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:07,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660523305]
[2022-01-31 17:30:07,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:07,505 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:07,505 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:07,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:07,506 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:07,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:07,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:07,840 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:07,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660523305]
[2022-01-31 17:30:07,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1660523305] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:07,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:07,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31
[2022-01-31 17:30:07,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380596676]
[2022-01-31 17:30:07,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:07,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states
[2022-01-31 17:30:07,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:07,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants.
[2022-01-31 17:30:07,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930
[2022-01-31 17:30:07,842 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 31 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 30 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:08,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:08,233 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions.
[2022-01-31 17:30:08,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2022-01-31 17:30:08,234 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 30 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40
[2022-01-31 17:30:08,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:08,234 INFO L225 Difference]: With dead ends: 57
[2022-01-31 17:30:08,234 INFO L226 Difference]: Without dead ends: 46
[2022-01-31 17:30:08,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422
[2022-01-31 17:30:08,236 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:08,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:08,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2022-01-31 17:30:08,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46.
[2022-01-31 17:30:08,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 40 states have (on average 1.05) internal successors, (42), 40 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:08,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions.
[2022-01-31 17:30:08,250 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 40
[2022-01-31 17:30:08,250 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:08,251 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions.
[2022-01-31 17:30:08,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 30 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:08,255 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions.
[2022-01-31 17:30:08,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2022-01-31 17:30:08,255 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:08,255 INFO L514 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:08,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28
[2022-01-31 17:30:08,264 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:08,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:08,265 INFO L85 PathProgramCache]: Analyzing trace with hash 158675423, now seen corresponding path program 28 times
[2022-01-31 17:30:08,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:08,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993248003]
[2022-01-31 17:30:08,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:08,266 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:08,266 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:08,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:08,267 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:08,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:08,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:08,574 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:08,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993248003]
[2022-01-31 17:30:08,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [993248003] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:08,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:08,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32
[2022-01-31 17:30:08,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728226116]
[2022-01-31 17:30:08,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:08,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2022-01-31 17:30:08,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:08,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2022-01-31 17:30:08,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992
[2022-01-31 17:30:08,576 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 32 states, 32 states have (on average 1.15625) internal successors, (37), 31 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:08,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:08,940 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions.
[2022-01-31 17:30:08,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2022-01-31 17:30:08,940 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.15625) internal successors, (37), 31 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41
[2022-01-31 17:30:08,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:08,940 INFO L225 Difference]: With dead ends: 58
[2022-01-31 17:30:08,940 INFO L226 Difference]: Without dead ends: 47
[2022-01-31 17:30:08,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660
[2022-01-31 17:30:08,942 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:08,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:08,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2022-01-31 17:30:08,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47.
[2022-01-31 17:30:08,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 41 states have (on average 1.048780487804878) internal successors, (43), 41 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:08,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions.
[2022-01-31 17:30:08,944 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 41
[2022-01-31 17:30:08,944 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:08,944 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions.
[2022-01-31 17:30:08,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.15625) internal successors, (37), 31 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:08,944 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions.
[2022-01-31 17:30:08,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2022-01-31 17:30:08,944 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:08,945 INFO L514 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:08,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29
[2022-01-31 17:30:08,945 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:08,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:08,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1468150549, now seen corresponding path program 29 times
[2022-01-31 17:30:08,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:08,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415312692]
[2022-01-31 17:30:08,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:08,946 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:08,946 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:08,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:08,948 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:09,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:09,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:09,257 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:09,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415312692]
[2022-01-31 17:30:09,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [415312692] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:09,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:09,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33
[2022-01-31 17:30:09,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787569022]
[2022-01-31 17:30:09,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:09,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states
[2022-01-31 17:30:09,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:09,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2022-01-31 17:30:09,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056
[2022-01-31 17:30:09,258 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 33 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 32 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:09,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:09,678 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions.
[2022-01-31 17:30:09,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2022-01-31 17:30:09,678 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 32 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42
[2022-01-31 17:30:09,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:09,679 INFO L225 Difference]: With dead ends: 59
[2022-01-31 17:30:09,679 INFO L226 Difference]: Without dead ends: 48
[2022-01-31 17:30:09,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906
[2022-01-31 17:30:09,680 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:09,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:09,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2022-01-31 17:30:09,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48.
[2022-01-31 17:30:09,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:09,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions.
[2022-01-31 17:30:09,682 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 42
[2022-01-31 17:30:09,682 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:09,682 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions.
[2022-01-31 17:30:09,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 32 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:09,683 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions.
[2022-01-31 17:30:09,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2022-01-31 17:30:09,683 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:09,683 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:09,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30
[2022-01-31 17:30:09,683 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:09,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:09,683 INFO L85 PathProgramCache]: Analyzing trace with hash -360148129, now seen corresponding path program 30 times
[2022-01-31 17:30:09,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:09,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877216040]
[2022-01-31 17:30:09,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:09,684 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:09,684 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:09,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:09,685 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:10,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:10,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:10,094 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:10,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877216040]
[2022-01-31 17:30:10,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [877216040] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:10,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:10,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34
[2022-01-31 17:30:10,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49968282]
[2022-01-31 17:30:10,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:10,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states
[2022-01-31 17:30:10,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:10,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2022-01-31 17:30:10,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122
[2022-01-31 17:30:10,096 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 34 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 33 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:10,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:10,639 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions.
[2022-01-31 17:30:10,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2022-01-31 17:30:10,639 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 33 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43
[2022-01-31 17:30:10,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:10,639 INFO L225 Difference]: With dead ends: 60
[2022-01-31 17:30:10,639 INFO L226 Difference]: Without dead ends: 49
[2022-01-31 17:30:10,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160
[2022-01-31 17:30:10,641 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:10,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:10,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2022-01-31 17:30:10,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49.
[2022-01-31 17:30:10,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 43 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:10,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions.
[2022-01-31 17:30:10,644 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 43
[2022-01-31 17:30:10,644 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:10,644 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions.
[2022-01-31 17:30:10,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 33 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:10,644 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions.
[2022-01-31 17:30:10,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2022-01-31 17:30:10,644 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:10,644 INFO L514 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:10,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31
[2022-01-31 17:30:10,645 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:10,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:10,645 INFO L85 PathProgramCache]: Analyzing trace with hash -371811477, now seen corresponding path program 31 times
[2022-01-31 17:30:10,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:10,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239556838]
[2022-01-31 17:30:10,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:10,646 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:10,646 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:10,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:10,648 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:11,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:11,076 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 17:30:11,076 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:11,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239556838]
[2022-01-31 17:30:11,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [239556838] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:11,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:11,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35
[2022-01-31 17:30:11,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116741708]
[2022-01-31 17:30:11,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:11,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states
[2022-01-31 17:30:11,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:11,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2022-01-31 17:30:11,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190
[2022-01-31 17:30:11,077 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 35 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 34 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:11,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:11,591 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions.
[2022-01-31 17:30:11,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2022-01-31 17:30:11,591 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 34 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44
[2022-01-31 17:30:11,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:11,591 INFO L225 Difference]: With dead ends: 61
[2022-01-31 17:30:11,591 INFO L226 Difference]: Without dead ends: 50
[2022-01-31 17:30:11,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422
[2022-01-31 17:30:11,593 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:11,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 29 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:11,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2022-01-31 17:30:11,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50.
[2022-01-31 17:30:11,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:11,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions.
[2022-01-31 17:30:11,595 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 44
[2022-01-31 17:30:11,595 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:11,595 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions.
[2022-01-31 17:30:11,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 34 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:11,595 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions.
[2022-01-31 17:30:11,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2022-01-31 17:30:11,595 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:11,595 INFO L514 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:11,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32
[2022-01-31 17:30:11,596 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:11,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:11,596 INFO L85 PathProgramCache]: Analyzing trace with hash -733375265, now seen corresponding path program 32 times
[2022-01-31 17:30:11,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:11,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365976955]
[2022-01-31 17:30:11,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:11,597 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:11,597 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:11,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:11,598 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:12,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:12,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:12,024 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:12,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365976955]
[2022-01-31 17:30:12,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1365976955] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:12,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:12,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36
[2022-01-31 17:30:12,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867373276]
[2022-01-31 17:30:12,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:12,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states
[2022-01-31 17:30:12,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:12,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2022-01-31 17:30:12,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260
[2022-01-31 17:30:12,026 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 36 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 35 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:12,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:12,494 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions.
[2022-01-31 17:30:12,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2022-01-31 17:30:12,495 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 35 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45
[2022-01-31 17:30:12,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:12,495 INFO L225 Difference]: With dead ends: 62
[2022-01-31 17:30:12,495 INFO L226 Difference]: Without dead ends: 51
[2022-01-31 17:30:12,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692
[2022-01-31 17:30:12,497 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:12,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:30:12,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2022-01-31 17:30:12,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51.
[2022-01-31 17:30:12,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:12,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions.
[2022-01-31 17:30:12,502 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 45
[2022-01-31 17:30:12,502 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:12,502 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions.
[2022-01-31 17:30:12,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 35 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:12,502 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions.
[2022-01-31 17:30:12,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2022-01-31 17:30:12,503 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:12,503 INFO L514 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:12,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33
[2022-01-31 17:30:12,503 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:12,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:12,503 INFO L85 PathProgramCache]: Analyzing trace with hash 943049195, now seen corresponding path program 33 times
[2022-01-31 17:30:12,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:12,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799050618]
[2022-01-31 17:30:12,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:12,506 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:12,506 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:12,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:12,508 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:13,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:13,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:13,004 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:13,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799050618]
[2022-01-31 17:30:13,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [799050618] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:13,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:13,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37
[2022-01-31 17:30:13,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422156596]
[2022-01-31 17:30:13,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:13,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states
[2022-01-31 17:30:13,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:13,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2022-01-31 17:30:13,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332
[2022-01-31 17:30:13,005 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 37 states, 37 states have (on average 1.135135135135135) internal successors, (42), 36 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:13,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:13,482 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions.
[2022-01-31 17:30:13,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2022-01-31 17:30:13,483 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.135135135135135) internal successors, (42), 36 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46
[2022-01-31 17:30:13,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:13,483 INFO L225 Difference]: With dead ends: 63
[2022-01-31 17:30:13,483 INFO L226 Difference]: Without dead ends: 52
[2022-01-31 17:30:13,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970
[2022-01-31 17:30:13,484 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:13,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:13,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2022-01-31 17:30:13,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52.
[2022-01-31 17:30:13,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:13,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions.
[2022-01-31 17:30:13,486 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 46
[2022-01-31 17:30:13,486 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:13,487 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions.
[2022-01-31 17:30:13,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.135135135135135) internal successors, (42), 36 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:13,487 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions.
[2022-01-31 17:30:13,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2022-01-31 17:30:13,487 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:13,487 INFO L514 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:13,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34
[2022-01-31 17:30:13,487 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:13,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:13,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1372599903, now seen corresponding path program 34 times
[2022-01-31 17:30:13,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:13,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365474127]
[2022-01-31 17:30:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:13,488 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:13,488 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:13,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:13,490 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:13,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:13,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:13,905 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:13,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365474127]
[2022-01-31 17:30:13,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [365474127] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:13,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:13,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38
[2022-01-31 17:30:13,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454004509]
[2022-01-31 17:30:13,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:13,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states
[2022-01-31 17:30:13,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:13,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2022-01-31 17:30:13,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406
[2022-01-31 17:30:13,907 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 38 states, 38 states have (on average 1.131578947368421) internal successors, (43), 37 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:14,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:14,302 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions.
[2022-01-31 17:30:14,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2022-01-31 17:30:14,303 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.131578947368421) internal successors, (43), 37 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47
[2022-01-31 17:30:14,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:14,303 INFO L225 Difference]: With dead ends: 64
[2022-01-31 17:30:14,303 INFO L226 Difference]: Without dead ends: 53
[2022-01-31 17:30:14,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256
[2022-01-31 17:30:14,304 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:14,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:30:14,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2022-01-31 17:30:14,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53.
[2022-01-31 17:30:14,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:14,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions.
[2022-01-31 17:30:14,306 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 47
[2022-01-31 17:30:14,306 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:14,306 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions.
[2022-01-31 17:30:14,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.131578947368421) internal successors, (43), 37 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:14,306 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions.
[2022-01-31 17:30:14,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2022-01-31 17:30:14,307 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:14,307 INFO L514 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:14,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35
[2022-01-31 17:30:14,307 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:14,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:14,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1803769963, now seen corresponding path program 35 times
[2022-01-31 17:30:14,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:14,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515180264]
[2022-01-31 17:30:14,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:14,308 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:14,308 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:14,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:14,310 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:14,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:14,684 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:14,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515180264]
[2022-01-31 17:30:14,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1515180264] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:14,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:14,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39
[2022-01-31 17:30:14,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136177823]
[2022-01-31 17:30:14,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:14,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states
[2022-01-31 17:30:14,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:14,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants.
[2022-01-31 17:30:14,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482
[2022-01-31 17:30:14,685 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 39 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 38 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:15,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:15,284 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions.
[2022-01-31 17:30:15,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2022-01-31 17:30:15,284 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 38 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48
[2022-01-31 17:30:15,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:15,285 INFO L225 Difference]: With dead ends: 65
[2022-01-31 17:30:15,285 INFO L226 Difference]: Without dead ends: 54
[2022-01-31 17:30:15,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550
[2022-01-31 17:30:15,286 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:15,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:15,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2022-01-31 17:30:15,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54.
[2022-01-31 17:30:15,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:15,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions.
[2022-01-31 17:30:15,288 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 48
[2022-01-31 17:30:15,288 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:15,288 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions.
[2022-01-31 17:30:15,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 38 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:15,288 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions.
[2022-01-31 17:30:15,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2022-01-31 17:30:15,288 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:15,288 INFO L514 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:15,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36
[2022-01-31 17:30:15,288 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:15,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:15,289 INFO L85 PathProgramCache]: Analyzing trace with hash -2009827361, now seen corresponding path program 36 times
[2022-01-31 17:30:15,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:15,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377185106]
[2022-01-31 17:30:15,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:15,289 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:15,290 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:15,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:15,291 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:15,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:15,803 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 17:30:15,803 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:15,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377185106]
[2022-01-31 17:30:15,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [377185106] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:15,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:15,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40
[2022-01-31 17:30:15,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947193372]
[2022-01-31 17:30:15,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:15,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states
[2022-01-31 17:30:15,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:15,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants.
[2022-01-31 17:30:15,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560
[2022-01-31 17:30:15,804 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 40 states, 40 states have (on average 1.125) internal successors, (45), 39 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:16,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:16,359 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions.
[2022-01-31 17:30:16,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2022-01-31 17:30:16,359 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.125) internal successors, (45), 39 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49
[2022-01-31 17:30:16,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:16,360 INFO L225 Difference]: With dead ends: 66
[2022-01-31 17:30:16,360 INFO L226 Difference]: Without dead ends: 55
[2022-01-31 17:30:16,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852
[2022-01-31 17:30:16,361 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:16,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:16,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2022-01-31 17:30:16,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55.
[2022-01-31 17:30:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:16,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions.
[2022-01-31 17:30:16,363 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 49
[2022-01-31 17:30:16,363 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:16,363 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions.
[2022-01-31 17:30:16,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.125) internal successors, (45), 39 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:16,363 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions.
[2022-01-31 17:30:16,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2022-01-31 17:30:16,363 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:16,363 INFO L514 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:16,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37
[2022-01-31 17:30:16,364 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:16,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:16,364 INFO L85 PathProgramCache]: Analyzing trace with hash 27739883, now seen corresponding path program 37 times
[2022-01-31 17:30:16,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:16,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665715598]
[2022-01-31 17:30:16,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:16,365 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:16,365 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:16,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:16,366 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:16,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:16,969 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:16,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665715598]
[2022-01-31 17:30:16,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [665715598] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:16,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:16,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41
[2022-01-31 17:30:16,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322306735]
[2022-01-31 17:30:16,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:16,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states
[2022-01-31 17:30:16,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:16,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants.
[2022-01-31 17:30:16,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640
[2022-01-31 17:30:16,971 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 41 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 40 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:17,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:17,707 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions.
[2022-01-31 17:30:17,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2022-01-31 17:30:17,708 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 40 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50
[2022-01-31 17:30:17,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:17,708 INFO L225 Difference]: With dead ends: 67
[2022-01-31 17:30:17,708 INFO L226 Difference]: Without dead ends: 56
[2022-01-31 17:30:17,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162
[2022-01-31 17:30:17,710 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:17,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:17,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2022-01-31 17:30:17,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56.
[2022-01-31 17:30:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:17,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions.
[2022-01-31 17:30:17,712 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 50
[2022-01-31 17:30:17,712 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:17,712 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions.
[2022-01-31 17:30:17,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 40 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:17,712 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions.
[2022-01-31 17:30:17,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2022-01-31 17:30:17,712 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:17,712 INFO L514 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:17,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38
[2022-01-31 17:30:17,713 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:17,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:17,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1232184993, now seen corresponding path program 38 times
[2022-01-31 17:30:17,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:17,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134624299]
[2022-01-31 17:30:17,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:17,715 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:17,715 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:17,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:17,716 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:18,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:18,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:18,204 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:18,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134624299]
[2022-01-31 17:30:18,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [134624299] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:18,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:18,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42
[2022-01-31 17:30:18,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255822090]
[2022-01-31 17:30:18,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:18,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states
[2022-01-31 17:30:18,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:18,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants.
[2022-01-31 17:30:18,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722
[2022-01-31 17:30:18,205 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 42 states, 42 states have (on average 1.119047619047619) internal successors, (47), 41 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:18,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:18,767 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions.
[2022-01-31 17:30:18,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2022-01-31 17:30:18,767 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.119047619047619) internal successors, (47), 41 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51
[2022-01-31 17:30:18,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:18,769 INFO L225 Difference]: With dead ends: 68
[2022-01-31 17:30:18,769 INFO L226 Difference]: Without dead ends: 57
[2022-01-31 17:30:18,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480
[2022-01-31 17:30:18,770 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:18,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:18,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2022-01-31 17:30:18,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57.
[2022-01-31 17:30:18,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:18,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions.
[2022-01-31 17:30:18,773 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 51
[2022-01-31 17:30:18,773 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:18,773 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions.
[2022-01-31 17:30:18,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.119047619047619) internal successors, (47), 41 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:18,774 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions.
[2022-01-31 17:30:18,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2022-01-31 17:30:18,774 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:18,774 INFO L514 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:18,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39
[2022-01-31 17:30:18,774 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:18,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:18,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1635150485, now seen corresponding path program 39 times
[2022-01-31 17:30:18,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:18,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947303674]
[2022-01-31 17:30:18,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:18,775 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:18,775 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:18,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:18,777 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:19,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:19,415 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:19,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947303674]
[2022-01-31 17:30:19,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [947303674] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:19,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:19,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43
[2022-01-31 17:30:19,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240599361]
[2022-01-31 17:30:19,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:19,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states
[2022-01-31 17:30:19,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:19,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants.
[2022-01-31 17:30:19,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806
[2022-01-31 17:30:19,417 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 43 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 42 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:20,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:20,207 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions.
[2022-01-31 17:30:20,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2022-01-31 17:30:20,207 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 42 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52
[2022-01-31 17:30:20,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:20,208 INFO L225 Difference]: With dead ends: 69
[2022-01-31 17:30:20,208 INFO L226 Difference]: Without dead ends: 58
[2022-01-31 17:30:20,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806
[2022-01-31 17:30:20,209 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:20,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 24 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 17:30:20,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2022-01-31 17:30:20,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58.
[2022-01-31 17:30:20,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:20,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions.
[2022-01-31 17:30:20,213 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 52
[2022-01-31 17:30:20,213 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:20,213 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions.
[2022-01-31 17:30:20,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 42 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:20,213 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions.
[2022-01-31 17:30:20,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2022-01-31 17:30:20,213 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:20,213 INFO L514 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:20,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40
[2022-01-31 17:30:20,213 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:20,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:20,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1242178849, now seen corresponding path program 40 times
[2022-01-31 17:30:20,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:20,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146877392]
[2022-01-31 17:30:20,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:20,214 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:20,215 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:20,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:20,219 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:20,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:20,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:20,745 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:20,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146877392]
[2022-01-31 17:30:20,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [146877392] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:20,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:20,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44
[2022-01-31 17:30:20,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426294415]
[2022-01-31 17:30:20,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:20,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states
[2022-01-31 17:30:20,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:20,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants.
[2022-01-31 17:30:20,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892
[2022-01-31 17:30:20,747 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand has 44 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 43 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:21,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:21,540 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions.
[2022-01-31 17:30:21,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2022-01-31 17:30:21,540 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 43 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53
[2022-01-31 17:30:21,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:21,540 INFO L225 Difference]: With dead ends: 70
[2022-01-31 17:30:21,540 INFO L226 Difference]: Without dead ends: 59
[2022-01-31 17:30:21,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140
[2022-01-31 17:30:21,543 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:21,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 29 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:21,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2022-01-31 17:30:21,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59.
[2022-01-31 17:30:21,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 53 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:21,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions.
[2022-01-31 17:30:21,545 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 53
[2022-01-31 17:30:21,546 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:21,546 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions.
[2022-01-31 17:30:21,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 43 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:21,546 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions.
[2022-01-31 17:30:21,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2022-01-31 17:30:21,546 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:21,546 INFO L514 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:21,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41
[2022-01-31 17:30:21,546 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:21,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:21,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1944960021, now seen corresponding path program 41 times
[2022-01-31 17:30:21,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:21,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480558729]
[2022-01-31 17:30:21,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:21,549 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:21,549 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:21,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:21,552 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:22,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:22,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:22,026 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:22,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480558729]
[2022-01-31 17:30:22,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1480558729] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:22,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:22,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45
[2022-01-31 17:30:22,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101159083]
[2022-01-31 17:30:22,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:22,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states
[2022-01-31 17:30:22,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:22,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2022-01-31 17:30:22,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980
[2022-01-31 17:30:22,034 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 45 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 44 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:22,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:22,619 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions.
[2022-01-31 17:30:22,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2022-01-31 17:30:22,619 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 44 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54
[2022-01-31 17:30:22,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:22,620 INFO L225 Difference]: With dead ends: 71
[2022-01-31 17:30:22,620 INFO L226 Difference]: Without dead ends: 60
[2022-01-31 17:30:22,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2838, Invalid=4644, Unknown=0, NotChecked=0, Total=7482
[2022-01-31 17:30:22,620 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:22,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:22,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2022-01-31 17:30:22,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60.
[2022-01-31 17:30:22,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:22,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions.
[2022-01-31 17:30:22,623 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 54
[2022-01-31 17:30:22,623 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:22,623 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions.
[2022-01-31 17:30:22,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 44 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:22,623 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions.
[2022-01-31 17:30:22,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2022-01-31 17:30:22,624 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:22,624 INFO L514 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:22,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42
[2022-01-31 17:30:22,624 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:22,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:22,624 INFO L85 PathProgramCache]: Analyzing trace with hash 2038627423, now seen corresponding path program 42 times
[2022-01-31 17:30:22,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:22,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699900614]
[2022-01-31 17:30:22,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:22,625 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:22,625 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:22,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:22,627 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:23,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:23,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:23,320 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:23,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699900614]
[2022-01-31 17:30:23,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [699900614] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:23,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:23,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46
[2022-01-31 17:30:23,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500862511]
[2022-01-31 17:30:23,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:23,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states
[2022-01-31 17:30:23,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:23,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants.
[2022-01-31 17:30:23,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070
[2022-01-31 17:30:23,321 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 46 states, 46 states have (on average 1.108695652173913) internal successors, (51), 45 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:24,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:24,140 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions.
[2022-01-31 17:30:24,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2022-01-31 17:30:24,141 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.108695652173913) internal successors, (51), 45 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55
[2022-01-31 17:30:24,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:24,141 INFO L225 Difference]: With dead ends: 72
[2022-01-31 17:30:24,141 INFO L226 Difference]: Without dead ends: 61
[2022-01-31 17:30:24,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2970, Invalid=4862, Unknown=0, NotChecked=0, Total=7832
[2022-01-31 17:30:24,142 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:24,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:24,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states.
[2022-01-31 17:30:24,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61.
[2022-01-31 17:30:24,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:24,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions.
[2022-01-31 17:30:24,144 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 55
[2022-01-31 17:30:24,144 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:24,144 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions.
[2022-01-31 17:30:24,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.108695652173913) internal successors, (51), 45 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:24,145 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions.
[2022-01-31 17:30:24,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2022-01-31 17:30:24,145 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:24,145 INFO L514 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:24,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43
[2022-01-31 17:30:24,145 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:24,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:24,145 INFO L85 PathProgramCache]: Analyzing trace with hash 975786603, now seen corresponding path program 43 times
[2022-01-31 17:30:24,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:24,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282002022]
[2022-01-31 17:30:24,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:24,146 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:24,146 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:24,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:24,148 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:24,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:24,781 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 17:30:24,782 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:24,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282002022]
[2022-01-31 17:30:24,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1282002022] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:24,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:24,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47
[2022-01-31 17:30:24,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702251211]
[2022-01-31 17:30:24,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:24,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states
[2022-01-31 17:30:24,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:24,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants.
[2022-01-31 17:30:24,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162
[2022-01-31 17:30:24,783 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 47 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 46 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:25,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:25,368 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions.
[2022-01-31 17:30:25,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2022-01-31 17:30:25,368 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 46 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56
[2022-01-31 17:30:25,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:25,368 INFO L225 Difference]: With dead ends: 73
[2022-01-31 17:30:25,368 INFO L226 Difference]: Without dead ends: 62
[2022-01-31 17:30:25,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190
[2022-01-31 17:30:25,370 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:25,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:25,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states.
[2022-01-31 17:30:25,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62.
[2022-01-31 17:30:25,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 56 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:25,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions.
[2022-01-31 17:30:25,372 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 56
[2022-01-31 17:30:25,372 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:25,372 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions.
[2022-01-31 17:30:25,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 46 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:25,372 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions.
[2022-01-31 17:30:25,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2022-01-31 17:30:25,372 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:25,372 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:25,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44
[2022-01-31 17:30:25,373 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:25,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:25,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1907507745, now seen corresponding path program 44 times
[2022-01-31 17:30:25,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:25,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068755004]
[2022-01-31 17:30:25,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:25,374 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:25,374 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:25,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:25,375 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:26,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:26,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:26,223 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:26,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068755004]
[2022-01-31 17:30:26,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1068755004] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:26,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:26,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48
[2022-01-31 17:30:26,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615071443]
[2022-01-31 17:30:26,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:26,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states
[2022-01-31 17:30:26,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:26,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants.
[2022-01-31 17:30:26,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256
[2022-01-31 17:30:26,224 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand has 48 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 47 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:27,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:27,001 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions.
[2022-01-31 17:30:27,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2022-01-31 17:30:27,001 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 47 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57
[2022-01-31 17:30:27,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:27,001 INFO L225 Difference]: With dead ends: 74
[2022-01-31 17:30:27,001 INFO L226 Difference]: Without dead ends: 63
[2022-01-31 17:30:27,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3243, Invalid=5313, Unknown=0, NotChecked=0, Total=8556
[2022-01-31 17:30:27,003 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:27,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:27,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2022-01-31 17:30:27,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63.
[2022-01-31 17:30:27,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 57 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:27,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions.
[2022-01-31 17:30:27,005 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 57
[2022-01-31 17:30:27,005 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:27,005 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions.
[2022-01-31 17:30:27,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 47 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:27,005 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions.
[2022-01-31 17:30:27,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2022-01-31 17:30:27,005 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:27,005 INFO L514 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:27,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45
[2022-01-31 17:30:27,005 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:27,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:27,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1095319317, now seen corresponding path program 45 times
[2022-01-31 17:30:27,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:27,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993727735]
[2022-01-31 17:30:27,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:27,007 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:27,007 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:27,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:27,008 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:27,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:27,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:27,550 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:27,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993727735]
[2022-01-31 17:30:27,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1993727735] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:27,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:27,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49
[2022-01-31 17:30:27,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502419066]
[2022-01-31 17:30:27,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:27,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states
[2022-01-31 17:30:27,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:27,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants.
[2022-01-31 17:30:27,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352
[2022-01-31 17:30:27,552 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 49 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 48 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:28,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:28,457 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions.
[2022-01-31 17:30:28,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states.
[2022-01-31 17:30:28,457 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 48 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58
[2022-01-31 17:30:28,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:28,458 INFO L225 Difference]: With dead ends: 75
[2022-01-31 17:30:28,458 INFO L226 Difference]: Without dead ends: 64
[2022-01-31 17:30:28,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930
[2022-01-31 17:30:28,459 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:28,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:28,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states.
[2022-01-31 17:30:28,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64.
[2022-01-31 17:30:28,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:28,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions.
[2022-01-31 17:30:28,462 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 58
[2022-01-31 17:30:28,462 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:28,462 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions.
[2022-01-31 17:30:28,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 48 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:28,462 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions.
[2022-01-31 17:30:28,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2022-01-31 17:30:28,462 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:28,462 INFO L514 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:28,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46
[2022-01-31 17:30:28,462 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:28,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:28,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1687281825, now seen corresponding path program 46 times
[2022-01-31 17:30:28,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:28,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076701143]
[2022-01-31 17:30:28,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:28,464 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:28,464 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:28,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:28,472 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:29,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:29,118 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:29,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076701143]
[2022-01-31 17:30:29,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1076701143] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:29,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:29,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50
[2022-01-31 17:30:29,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037515512]
[2022-01-31 17:30:29,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:29,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states
[2022-01-31 17:30:29,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:29,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants.
[2022-01-31 17:30:29,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450
[2022-01-31 17:30:29,127 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 50 states, 50 states have (on average 1.1) internal successors, (55), 49 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:29,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:29,801 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions.
[2022-01-31 17:30:29,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2022-01-31 17:30:29,801 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.1) internal successors, (55), 49 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59
[2022-01-31 17:30:29,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:29,802 INFO L225 Difference]: With dead ends: 76
[2022-01-31 17:30:29,802 INFO L226 Difference]: Without dead ends: 65
[2022-01-31 17:30:29,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3528, Invalid=5784, Unknown=0, NotChecked=0, Total=9312
[2022-01-31 17:30:29,803 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:29,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:29,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2022-01-31 17:30:29,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65.
[2022-01-31 17:30:29,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:29,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions.
[2022-01-31 17:30:29,812 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 59
[2022-01-31 17:30:29,812 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:29,812 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions.
[2022-01-31 17:30:29,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.1) internal successors, (55), 49 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:29,812 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions.
[2022-01-31 17:30:29,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2022-01-31 17:30:29,812 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:29,812 INFO L514 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:29,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47
[2022-01-31 17:30:29,813 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:29,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:29,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1436716907, now seen corresponding path program 47 times
[2022-01-31 17:30:29,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:29,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444073181]
[2022-01-31 17:30:29,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:29,814 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:29,814 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:29,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:29,816 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:30,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:30,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:30,477 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:30,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444073181]
[2022-01-31 17:30:30,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [444073181] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:30,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:30,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51
[2022-01-31 17:30:30,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069148071]
[2022-01-31 17:30:30,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:30,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states
[2022-01-31 17:30:30,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:30,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants.
[2022-01-31 17:30:30,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550
[2022-01-31 17:30:30,478 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 51 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 50 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:31,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:31,478 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions.
[2022-01-31 17:30:31,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states.
[2022-01-31 17:30:31,479 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 50 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60
[2022-01-31 17:30:31,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:31,479 INFO L225 Difference]: With dead ends: 77
[2022-01-31 17:30:31,480 INFO L226 Difference]: Without dead ends: 66
[2022-01-31 17:30:31,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702
[2022-01-31 17:30:31,481 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:31,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 29 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:31,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2022-01-31 17:30:31,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66.
[2022-01-31 17:30:31,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 60 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:31,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions.
[2022-01-31 17:30:31,483 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 60
[2022-01-31 17:30:31,483 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:31,483 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions.
[2022-01-31 17:30:31,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 50 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:31,483 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions.
[2022-01-31 17:30:31,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2022-01-31 17:30:31,484 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:31,484 INFO L514 BasicCegarLoop]: trace histogram [48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:31,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48
[2022-01-31 17:30:31,484 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:31,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:31,484 INFO L85 PathProgramCache]: Analyzing trace with hash -503570209, now seen corresponding path program 48 times
[2022-01-31 17:30:31,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:31,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796491570]
[2022-01-31 17:30:31,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:31,485 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:31,485 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:31,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:31,487 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:32,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:32,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:32,375 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:32,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796491570]
[2022-01-31 17:30:32,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1796491570] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:32,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:32,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52
[2022-01-31 17:30:32,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058930781]
[2022-01-31 17:30:32,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:32,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states
[2022-01-31 17:30:32,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:32,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants.
[2022-01-31 17:30:32,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652
[2022-01-31 17:30:32,377 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 52 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 51 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:33,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:33,430 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions.
[2022-01-31 17:30:33,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states.
[2022-01-31 17:30:33,431 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 51 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61
[2022-01-31 17:30:33,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:33,431 INFO L225 Difference]: With dead ends: 78
[2022-01-31 17:30:33,431 INFO L226 Difference]: Without dead ends: 67
[2022-01-31 17:30:33,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3825, Invalid=6275, Unknown=0, NotChecked=0, Total=10100
[2022-01-31 17:30:33,432 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:33,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:33,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states.
[2022-01-31 17:30:33,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67.
[2022-01-31 17:30:33,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 61 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:33,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions.
[2022-01-31 17:30:33,435 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 61
[2022-01-31 17:30:33,435 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:33,435 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions.
[2022-01-31 17:30:33,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 51 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:33,435 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions.
[2022-01-31 17:30:33,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63
[2022-01-31 17:30:33,435 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:33,435 INFO L514 BasicCegarLoop]: trace histogram [49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:33,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49
[2022-01-31 17:30:33,435 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:33,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:33,436 INFO L85 PathProgramCache]: Analyzing trace with hash -522928661, now seen corresponding path program 49 times
[2022-01-31 17:30:33,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:33,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82829495]
[2022-01-31 17:30:33,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:33,436 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:33,436 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:33,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:33,438 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:34,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:34,316 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:34,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82829495]
[2022-01-31 17:30:34,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [82829495] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:34,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:34,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53
[2022-01-31 17:30:34,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388784551]
[2022-01-31 17:30:34,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:34,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states
[2022-01-31 17:30:34,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:34,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants.
[2022-01-31 17:30:34,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756
[2022-01-31 17:30:34,317 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 53 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 52 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:35,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:35,111 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions.
[2022-01-31 17:30:35,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2022-01-31 17:30:35,111 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 52 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62
[2022-01-31 17:30:35,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:35,112 INFO L225 Difference]: With dead ends: 79
[2022-01-31 17:30:35,112 INFO L226 Difference]: Without dead ends: 68
[2022-01-31 17:30:35,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506
[2022-01-31 17:30:35,113 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:35,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:35,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2022-01-31 17:30:35,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68.
[2022-01-31 17:30:35,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:35,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions.
[2022-01-31 17:30:35,115 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 62
[2022-01-31 17:30:35,115 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:35,115 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions.
[2022-01-31 17:30:35,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 52 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:35,115 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions.
[2022-01-31 17:30:35,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64
[2022-01-31 17:30:35,118 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:35,118 INFO L514 BasicCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:35,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50
[2022-01-31 17:30:35,119 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:35,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:35,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1123040673, now seen corresponding path program 50 times
[2022-01-31 17:30:35,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:35,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768786027]
[2022-01-31 17:30:35,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:35,121 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:35,121 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:35,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:35,123 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:35,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:35,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:35,780 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:35,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768786027]
[2022-01-31 17:30:35,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [768786027] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:35,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:35,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54
[2022-01-31 17:30:35,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483345118]
[2022-01-31 17:30:35,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:35,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states
[2022-01-31 17:30:35,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:35,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants.
[2022-01-31 17:30:35,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862
[2022-01-31 17:30:35,781 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 54 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 53 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:36,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:36,634 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions.
[2022-01-31 17:30:36,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states.
[2022-01-31 17:30:36,635 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 53 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63
[2022-01-31 17:30:36,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:36,635 INFO L225 Difference]: With dead ends: 80
[2022-01-31 17:30:36,635 INFO L226 Difference]: Without dead ends: 69
[2022-01-31 17:30:36,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920
[2022-01-31 17:30:36,636 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:36,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:36,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states.
[2022-01-31 17:30:36,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69.
[2022-01-31 17:30:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:36,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions.
[2022-01-31 17:30:36,638 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 63
[2022-01-31 17:30:36,638 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:36,638 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions.
[2022-01-31 17:30:36,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 53 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:36,639 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions.
[2022-01-31 17:30:36,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2022-01-31 17:30:36,639 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:36,639 INFO L514 BasicCegarLoop]: trace histogram [51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:36,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51
[2022-01-31 17:30:36,639 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:36,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:36,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1748323435, now seen corresponding path program 51 times
[2022-01-31 17:30:36,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:36,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222402802]
[2022-01-31 17:30:36,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:36,640 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:36,640 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:36,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:36,642 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:37,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:37,296 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:37,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222402802]
[2022-01-31 17:30:37,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1222402802] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:37,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:37,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55
[2022-01-31 17:30:37,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567394015]
[2022-01-31 17:30:37,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:37,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states
[2022-01-31 17:30:37,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:37,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants.
[2022-01-31 17:30:37,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970
[2022-01-31 17:30:37,298 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 55 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 54 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:38,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:38,122 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions.
[2022-01-31 17:30:38,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2022-01-31 17:30:38,123 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 54 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64
[2022-01-31 17:30:38,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:38,123 INFO L225 Difference]: With dead ends: 81
[2022-01-31 17:30:38,123 INFO L226 Difference]: Without dead ends: 70
[2022-01-31 17:30:38,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342
[2022-01-31 17:30:38,125 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:38,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 74 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:38,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states.
[2022-01-31 17:30:38,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70.
[2022-01-31 17:30:38,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 64 states have (on average 1.03125) internal successors, (66), 64 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:38,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions.
[2022-01-31 17:30:38,150 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 64
[2022-01-31 17:30:38,150 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:38,150 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions.
[2022-01-31 17:30:38,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 54 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:38,150 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions.
[2022-01-31 17:30:38,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2022-01-31 17:30:38,151 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:38,151 INFO L514 BasicCegarLoop]: trace histogram [52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:38,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52
[2022-01-31 17:30:38,151 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:38,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:38,151 INFO L85 PathProgramCache]: Analyzing trace with hash 566297567, now seen corresponding path program 52 times
[2022-01-31 17:30:38,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:38,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376989162]
[2022-01-31 17:30:38,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:38,152 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:38,153 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:38,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:38,165 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:39,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:39,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:39,180 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:39,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376989162]
[2022-01-31 17:30:39,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1376989162] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:39,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:39,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56
[2022-01-31 17:30:39,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777695976]
[2022-01-31 17:30:39,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:39,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states
[2022-01-31 17:30:39,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:39,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants.
[2022-01-31 17:30:39,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080
[2022-01-31 17:30:39,181 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 56 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 55 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:40,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:40,430 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions.
[2022-01-31 17:30:40,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states.
[2022-01-31 17:30:40,430 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 55 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65
[2022-01-31 17:30:40,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:40,431 INFO L225 Difference]: With dead ends: 82
[2022-01-31 17:30:40,431 INFO L226 Difference]: Without dead ends: 71
[2022-01-31 17:30:40,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4455, Invalid=7317, Unknown=0, NotChecked=0, Total=11772
[2022-01-31 17:30:40,433 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:40,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:40,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states.
[2022-01-31 17:30:40,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71.
[2022-01-31 17:30:40,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 65 states have internal predecessors, (67), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:40,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions.
[2022-01-31 17:30:40,435 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 65
[2022-01-31 17:30:40,435 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:40,435 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions.
[2022-01-31 17:30:40,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 55 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:40,436 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions.
[2022-01-31 17:30:40,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2022-01-31 17:30:40,436 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:40,436 INFO L514 BasicCegarLoop]: trace histogram [53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:40,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53
[2022-01-31 17:30:40,436 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:40,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:40,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1716765973, now seen corresponding path program 53 times
[2022-01-31 17:30:40,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:40,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977869387]
[2022-01-31 17:30:40,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:40,437 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:40,437 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:40,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:40,441 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:41,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:41,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:41,447 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:41,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977869387]
[2022-01-31 17:30:41,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [977869387] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:41,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:41,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57
[2022-01-31 17:30:41,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862981046]
[2022-01-31 17:30:41,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:41,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states
[2022-01-31 17:30:41,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:41,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants.
[2022-01-31 17:30:41,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192
[2022-01-31 17:30:41,449 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 57 states, 57 states have (on average 1.087719298245614) internal successors, (62), 56 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:42,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:42,679 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions.
[2022-01-31 17:30:42,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states.
[2022-01-31 17:30:42,680 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.087719298245614) internal successors, (62), 56 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66
[2022-01-31 17:30:42,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:42,680 INFO L225 Difference]: With dead ends: 83
[2022-01-31 17:30:42,680 INFO L226 Difference]: Without dead ends: 72
[2022-01-31 17:30:42,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4620, Invalid=7590, Unknown=0, NotChecked=0, Total=12210
[2022-01-31 17:30:42,682 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:42,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:42,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2022-01-31 17:30:42,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72.
[2022-01-31 17:30:42,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:42,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions.
[2022-01-31 17:30:42,684 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 66
[2022-01-31 17:30:42,684 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:42,684 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions.
[2022-01-31 17:30:42,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.087719298245614) internal successors, (62), 56 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:42,684 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions.
[2022-01-31 17:30:42,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-01-31 17:30:42,685 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:42,685 INFO L514 BasicCegarLoop]: trace histogram [54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:42,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54
[2022-01-31 17:30:42,685 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:42,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:42,685 INFO L85 PathProgramCache]: Analyzing trace with hash 522708319, now seen corresponding path program 54 times
[2022-01-31 17:30:42,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:42,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153435904]
[2022-01-31 17:30:42,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:42,686 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:42,686 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:42,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:42,688 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:43,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:43,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:43,713 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:43,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153435904]
[2022-01-31 17:30:43,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1153435904] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:43,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:43,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58
[2022-01-31 17:30:43,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622386800]
[2022-01-31 17:30:43,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:43,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states
[2022-01-31 17:30:43,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:43,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants.
[2022-01-31 17:30:43,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306
[2022-01-31 17:30:43,715 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 58 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 57 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:44,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:44,856 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions.
[2022-01-31 17:30:44,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states.
[2022-01-31 17:30:44,856 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 57 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67
[2022-01-31 17:30:44,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:44,856 INFO L225 Difference]: With dead ends: 84
[2022-01-31 17:30:44,856 INFO L226 Difference]: Without dead ends: 73
[2022-01-31 17:30:44,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4788, Invalid=7868, Unknown=0, NotChecked=0, Total=12656
[2022-01-31 17:30:44,858 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:44,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:44,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states.
[2022-01-31 17:30:44,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73.
[2022-01-31 17:30:44,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:44,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions.
[2022-01-31 17:30:44,861 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 67
[2022-01-31 17:30:44,861 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:44,861 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions.
[2022-01-31 17:30:44,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 57 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:44,861 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions.
[2022-01-31 17:30:44,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2022-01-31 17:30:44,861 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:44,861 INFO L514 BasicCegarLoop]: trace histogram [55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:44,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55
[2022-01-31 17:30:44,861 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:44,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:44,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1226934635, now seen corresponding path program 55 times
[2022-01-31 17:30:44,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:44,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975207890]
[2022-01-31 17:30:44,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:44,863 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:44,863 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:44,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:44,866 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:45,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:45,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:45,946 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:45,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975207890]
[2022-01-31 17:30:45,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [975207890] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:45,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:45,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59
[2022-01-31 17:30:45,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358563037]
[2022-01-31 17:30:45,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:45,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states
[2022-01-31 17:30:45,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:45,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants.
[2022-01-31 17:30:45,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422
[2022-01-31 17:30:45,947 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 59 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 58 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:46,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:46,857 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions.
[2022-01-31 17:30:46,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states.
[2022-01-31 17:30:46,857 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 58 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68
[2022-01-31 17:30:46,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:46,858 INFO L225 Difference]: With dead ends: 85
[2022-01-31 17:30:46,858 INFO L226 Difference]: Without dead ends: 74
[2022-01-31 17:30:46,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110
[2022-01-31 17:30:46,860 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:46,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:46,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states.
[2022-01-31 17:30:46,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74.
[2022-01-31 17:30:46,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 states have internal predecessors, (70), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:46,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions.
[2022-01-31 17:30:46,862 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 68
[2022-01-31 17:30:46,862 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:46,862 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions.
[2022-01-31 17:30:46,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 58 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:46,862 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions.
[2022-01-31 17:30:46,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2022-01-31 17:30:46,863 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:46,863 INFO L514 BasicCegarLoop]: trace histogram [56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:46,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56
[2022-01-31 17:30:46,863 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:46,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:46,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1583113951, now seen corresponding path program 56 times
[2022-01-31 17:30:46,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:46,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425502375]
[2022-01-31 17:30:46,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:46,864 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:46,864 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:46,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:46,866 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:47,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:47,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:47,987 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:47,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425502375]
[2022-01-31 17:30:47,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [425502375] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:47,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:47,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60
[2022-01-31 17:30:47,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549658735]
[2022-01-31 17:30:47,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:47,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states
[2022-01-31 17:30:47,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:47,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants.
[2022-01-31 17:30:47,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540
[2022-01-31 17:30:47,988 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand has 60 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 59 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:49,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:49,078 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions.
[2022-01-31 17:30:49,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2022-01-31 17:30:49,078 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 59 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69
[2022-01-31 17:30:49,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:49,079 INFO L225 Difference]: With dead ends: 86
[2022-01-31 17:30:49,079 INFO L226 Difference]: Without dead ends: 75
[2022-01-31 17:30:49,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=5133, Invalid=8439, Unknown=0, NotChecked=0, Total=13572
[2022-01-31 17:30:49,080 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:49,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:49,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states.
[2022-01-31 17:30:49,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75.
[2022-01-31 17:30:49,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 69 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:49,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions.
[2022-01-31 17:30:49,082 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 69
[2022-01-31 17:30:49,082 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:49,082 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions.
[2022-01-31 17:30:49,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 59 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:49,082 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions.
[2022-01-31 17:30:49,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2022-01-31 17:30:49,082 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:49,082 INFO L514 BasicCegarLoop]: trace histogram [57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:49,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57
[2022-01-31 17:30:49,083 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:49,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:49,083 INFO L85 PathProgramCache]: Analyzing trace with hash -260229141, now seen corresponding path program 57 times
[2022-01-31 17:30:49,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:49,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407649576]
[2022-01-31 17:30:49,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:49,084 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:49,084 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:49,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:49,086 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:49,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:49,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:49,909 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:49,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407649576]
[2022-01-31 17:30:49,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [407649576] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:49,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:49,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61
[2022-01-31 17:30:49,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68622220]
[2022-01-31 17:30:49,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:49,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states
[2022-01-31 17:30:49,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:49,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants.
[2022-01-31 17:30:49,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660
[2022-01-31 17:30:49,911 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 61 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 60 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:50,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:50,962 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions.
[2022-01-31 17:30:50,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states.
[2022-01-31 17:30:50,962 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 60 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70
[2022-01-31 17:30:50,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:50,963 INFO L225 Difference]: With dead ends: 87
[2022-01-31 17:30:50,963 INFO L226 Difference]: Without dead ends: 76
[2022-01-31 17:30:50,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=5310, Invalid=8732, Unknown=0, NotChecked=0, Total=14042
[2022-01-31 17:30:50,964 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:50,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 24 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:50,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states.
[2022-01-31 17:30:50,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76.
[2022-01-31 17:30:50,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:50,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions.
[2022-01-31 17:30:50,966 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 70
[2022-01-31 17:30:50,966 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:50,967 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions.
[2022-01-31 17:30:50,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 60 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:50,967 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions.
[2022-01-31 17:30:50,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72
[2022-01-31 17:30:50,967 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:50,967 INFO L514 BasicCegarLoop]: trace histogram [58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:50,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58
[2022-01-31 17:30:50,967 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:50,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:50,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1569290145, now seen corresponding path program 58 times
[2022-01-31 17:30:50,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:50,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993897815]
[2022-01-31 17:30:50,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:50,969 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:50,969 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:50,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:50,972 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:52,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:52,236 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:52,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993897815]
[2022-01-31 17:30:52,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1993897815] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:52,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:52,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62
[2022-01-31 17:30:52,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110325708]
[2022-01-31 17:30:52,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:52,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states
[2022-01-31 17:30:52,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:52,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants.
[2022-01-31 17:30:52,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782
[2022-01-31 17:30:52,238 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 62 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 61 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:53,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:53,729 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions.
[2022-01-31 17:30:53,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states.
[2022-01-31 17:30:53,729 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 61 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71
[2022-01-31 17:30:53,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:53,729 INFO L225 Difference]: With dead ends: 88
[2022-01-31 17:30:53,729 INFO L226 Difference]: Without dead ends: 77
[2022-01-31 17:30:53,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5490, Invalid=9030, Unknown=0, NotChecked=0, Total=14520
[2022-01-31 17:30:53,731 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:53,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:53,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states.
[2022-01-31 17:30:53,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77.
[2022-01-31 17:30:53,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:53,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions.
[2022-01-31 17:30:53,733 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 71
[2022-01-31 17:30:53,734 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:53,734 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions.
[2022-01-31 17:30:53,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 61 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:53,734 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions.
[2022-01-31 17:30:53,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73
[2022-01-31 17:30:53,735 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:53,735 INFO L514 BasicCegarLoop]: trace histogram [59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:53,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59
[2022-01-31 17:30:53,735 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:53,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:53,735 INFO L85 PathProgramCache]: Analyzing trace with hash 799491691, now seen corresponding path program 59 times
[2022-01-31 17:30:53,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:53,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92694575]
[2022-01-31 17:30:53,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:53,739 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:53,739 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:53,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:53,743 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:55,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:55,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:55,098 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:55,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92694575]
[2022-01-31 17:30:55,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [92694575] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:55,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:55,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63
[2022-01-31 17:30:55,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596147095]
[2022-01-31 17:30:55,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:55,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states
[2022-01-31 17:30:55,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:55,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants.
[2022-01-31 17:30:55,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906
[2022-01-31 17:30:55,100 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 63 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 62 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:56,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:56,640 INFO L93 Difference]: Finished difference Result 89 states and 91 transitions.
[2022-01-31 17:30:56,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states.
[2022-01-31 17:30:56,640 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 62 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72
[2022-01-31 17:30:56,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:56,641 INFO L225 Difference]: With dead ends: 89
[2022-01-31 17:30:56,641 INFO L226 Difference]: Without dead ends: 78
[2022-01-31 17:30:56,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006
[2022-01-31 17:30:56,642 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:56,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:56,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2022-01-31 17:30:56,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78.
[2022-01-31 17:30:56,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:56,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions.
[2022-01-31 17:30:56,645 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 72
[2022-01-31 17:30:56,645 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:56,645 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions.
[2022-01-31 17:30:56,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 62 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:56,645 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions.
[2022-01-31 17:30:56,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74
[2022-01-31 17:30:56,645 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:56,645 INFO L514 BasicCegarLoop]: trace histogram [60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:56,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60
[2022-01-31 17:30:56,646 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:56,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:56,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1217284575, now seen corresponding path program 60 times
[2022-01-31 17:30:56,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:56,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659511048]
[2022-01-31 17:30:56,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:56,647 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:56,647 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:56,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:56,650 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:57,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:30:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:30:57,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:30:57,970 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:30:57,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659511048]
[2022-01-31 17:30:57,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1659511048] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:30:57,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:30:57,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64
[2022-01-31 17:30:57,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415048471]
[2022-01-31 17:30:57,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:30:57,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states
[2022-01-31 17:30:57,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:30:57,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants.
[2022-01-31 17:30:57,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032
[2022-01-31 17:30:57,972 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand has 64 states, 64 states have (on average 1.078125) internal successors, (69), 63 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:30:59,183 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions.
[2022-01-31 17:30:59,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states.
[2022-01-31 17:30:59,183 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.078125) internal successors, (69), 63 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73
[2022-01-31 17:30:59,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:30:59,184 INFO L225 Difference]: With dead ends: 90
[2022-01-31 17:30:59,184 INFO L226 Difference]: Without dead ends: 79
[2022-01-31 17:30:59,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1890 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5859, Invalid=9641, Unknown=0, NotChecked=0, Total=15500
[2022-01-31 17:30:59,186 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:30:59,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:30:59,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states.
[2022-01-31 17:30:59,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79.
[2022-01-31 17:30:59,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 73 states have internal predecessors, (75), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:30:59,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions.
[2022-01-31 17:30:59,188 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 73
[2022-01-31 17:30:59,188 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:30:59,188 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions.
[2022-01-31 17:30:59,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.078125) internal successors, (69), 63 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:30:59,188 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions.
[2022-01-31 17:30:59,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2022-01-31 17:30:59,189 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:30:59,189 INFO L514 BasicCegarLoop]: trace histogram [61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:30:59,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61
[2022-01-31 17:30:59,189 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:30:59,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:30:59,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1283962091, now seen corresponding path program 61 times
[2022-01-31 17:30:59,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:30:59,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847575896]
[2022-01-31 17:30:59,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:30:59,190 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:30:59,190 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:30:59,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:30:59,194 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:30:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:00,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:00,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:00,565 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:00,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847575896]
[2022-01-31 17:31:00,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [847575896] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:00,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:00,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65
[2022-01-31 17:31:00,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410741243]
[2022-01-31 17:31:00,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:00,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states
[2022-01-31 17:31:00,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:00,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants.
[2022-01-31 17:31:00,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160
[2022-01-31 17:31:00,567 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 65 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 64 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:02,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:02,015 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions.
[2022-01-31 17:31:02,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states.
[2022-01-31 17:31:02,015 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 64 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74
[2022-01-31 17:31:02,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:02,016 INFO L225 Difference]: With dead ends: 91
[2022-01-31 17:31:02,016 INFO L226 Difference]: Without dead ends: 80
[2022-01-31 17:31:02,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1952 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=6048, Invalid=9954, Unknown=0, NotChecked=0, Total=16002
[2022-01-31 17:31:02,018 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:02,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:31:02,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2022-01-31 17:31:02,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80.
[2022-01-31 17:31:02,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 74 states have (on average 1.027027027027027) internal successors, (76), 74 states have internal predecessors, (76), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:02,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions.
[2022-01-31 17:31:02,026 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 74
[2022-01-31 17:31:02,026 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:02,026 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions.
[2022-01-31 17:31:02,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 64 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:02,026 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions.
[2022-01-31 17:31:02,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2022-01-31 17:31:02,027 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:02,027 INFO L514 BasicCegarLoop]: trace histogram [62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:02,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62
[2022-01-31 17:31:02,028 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:02,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:02,028 INFO L85 PathProgramCache]: Analyzing trace with hash -944002209, now seen corresponding path program 62 times
[2022-01-31 17:31:02,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:02,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727224628]
[2022-01-31 17:31:02,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:02,029 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:02,029 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:02,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:02,034 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:03,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:03,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:03,469 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:03,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727224628]
[2022-01-31 17:31:03,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [727224628] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:03,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:03,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66
[2022-01-31 17:31:03,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376600992]
[2022-01-31 17:31:03,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:03,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states
[2022-01-31 17:31:03,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:03,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants.
[2022-01-31 17:31:03,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290
[2022-01-31 17:31:03,471 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 66 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 65 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:05,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:05,162 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions.
[2022-01-31 17:31:05,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states.
[2022-01-31 17:31:05,162 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 65 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75
[2022-01-31 17:31:05,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:05,163 INFO L225 Difference]: With dead ends: 92
[2022-01-31 17:31:05,163 INFO L226 Difference]: Without dead ends: 81
[2022-01-31 17:31:05,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=6240, Invalid=10272, Unknown=0, NotChecked=0, Total=16512
[2022-01-31 17:31:05,164 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:05,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:31:05,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states.
[2022-01-31 17:31:05,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81.
[2022-01-31 17:31:05,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 states have internal predecessors, (77), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:05,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions.
[2022-01-31 17:31:05,166 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 75
[2022-01-31 17:31:05,166 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:05,167 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions.
[2022-01-31 17:31:05,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 65 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:05,167 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions.
[2022-01-31 17:31:05,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77
[2022-01-31 17:31:05,167 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:05,167 INFO L514 BasicCegarLoop]: trace histogram [63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:05,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63
[2022-01-31 17:31:05,167 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:05,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:05,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1291418773, now seen corresponding path program 63 times
[2022-01-31 17:31:05,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:05,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867953431]
[2022-01-31 17:31:05,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:05,168 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:05,168 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:05,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:05,171 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:06,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:06,648 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:06,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867953431]
[2022-01-31 17:31:06,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1867953431] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:06,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:06,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67
[2022-01-31 17:31:06,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533555107]
[2022-01-31 17:31:06,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:06,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states
[2022-01-31 17:31:06,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:06,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants.
[2022-01-31 17:31:06,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422
[2022-01-31 17:31:06,650 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 67 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 66 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:08,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:08,254 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions.
[2022-01-31 17:31:08,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states.
[2022-01-31 17:31:08,254 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 66 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76
[2022-01-31 17:31:08,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:08,254 INFO L225 Difference]: With dead ends: 93
[2022-01-31 17:31:08,254 INFO L226 Difference]: Without dead ends: 82
[2022-01-31 17:31:08,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2079 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030
[2022-01-31 17:31:08,256 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:08,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:31:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states.
[2022-01-31 17:31:08,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82.
[2022-01-31 17:31:08,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:08,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions.
[2022-01-31 17:31:08,258 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 76
[2022-01-31 17:31:08,259 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:08,259 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions.
[2022-01-31 17:31:08,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 66 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:08,259 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions.
[2022-01-31 17:31:08,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2022-01-31 17:31:08,261 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:08,261 INFO L514 BasicCegarLoop]: trace histogram [64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:08,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64
[2022-01-31 17:31:08,261 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:08,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:08,262 INFO L85 PathProgramCache]: Analyzing trace with hash 823569631, now seen corresponding path program 64 times
[2022-01-31 17:31:08,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:08,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989715333]
[2022-01-31 17:31:08,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:08,265 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:08,266 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:08,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:08,268 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:09,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:09,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:09,515 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:09,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989715333]
[2022-01-31 17:31:09,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [989715333] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:09,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:09,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68
[2022-01-31 17:31:09,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032712640]
[2022-01-31 17:31:09,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:09,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states
[2022-01-31 17:31:09,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:09,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants.
[2022-01-31 17:31:09,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556
[2022-01-31 17:31:09,516 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand has 68 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 67 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:11,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:11,280 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions.
[2022-01-31 17:31:11,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states.
[2022-01-31 17:31:11,280 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 67 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77
[2022-01-31 17:31:11,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:11,281 INFO L225 Difference]: With dead ends: 94
[2022-01-31 17:31:11,281 INFO L226 Difference]: Without dead ends: 83
[2022-01-31 17:31:11,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=6633, Invalid=10923, Unknown=0, NotChecked=0, Total=17556
[2022-01-31 17:31:11,284 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:11,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:31:11,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states.
[2022-01-31 17:31:11,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83.
[2022-01-31 17:31:11,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 77 states have (on average 1.025974025974026) internal successors, (79), 77 states have internal predecessors, (79), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:11,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions.
[2022-01-31 17:31:11,287 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 77
[2022-01-31 17:31:11,287 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:11,287 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions.
[2022-01-31 17:31:11,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 67 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:11,287 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions.
[2022-01-31 17:31:11,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2022-01-31 17:31:11,288 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:11,288 INFO L514 BasicCegarLoop]: trace histogram [65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:11,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65
[2022-01-31 17:31:11,288 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:11,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:11,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1963700715, now seen corresponding path program 65 times
[2022-01-31 17:31:11,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:11,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87813125]
[2022-01-31 17:31:11,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:11,289 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:11,289 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:11,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:11,293 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:12,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:12,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:12,775 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:12,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87813125]
[2022-01-31 17:31:12,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [87813125] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:12,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:12,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69
[2022-01-31 17:31:12,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224561261]
[2022-01-31 17:31:12,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:12,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states
[2022-01-31 17:31:12,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:12,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants.
[2022-01-31 17:31:12,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692
[2022-01-31 17:31:12,776 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 69 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 68 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:14,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:14,506 INFO L93 Difference]: Finished difference Result 95 states and 97 transitions.
[2022-01-31 17:31:14,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states.
[2022-01-31 17:31:14,506 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 68 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 78
[2022-01-31 17:31:14,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:14,507 INFO L225 Difference]: With dead ends: 95
[2022-01-31 17:31:14,507 INFO L226 Difference]: Without dead ends: 84
[2022-01-31 17:31:14,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=6834, Invalid=11256, Unknown=0, NotChecked=0, Total=18090
[2022-01-31 17:31:14,508 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:14,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:31:14,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states.
[2022-01-31 17:31:14,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84.
[2022-01-31 17:31:14,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 78 states have internal predecessors, (80), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:14,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions.
[2022-01-31 17:31:14,531 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 78
[2022-01-31 17:31:14,531 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:14,531 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions.
[2022-01-31 17:31:14,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 68 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:14,532 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions.
[2022-01-31 17:31:14,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80
[2022-01-31 17:31:14,532 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:14,532 INFO L514 BasicCegarLoop]: trace histogram [66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:14,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66
[2022-01-31 17:31:14,532 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:14,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:14,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1346941345, now seen corresponding path program 66 times
[2022-01-31 17:31:14,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:14,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536630618]
[2022-01-31 17:31:14,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:14,533 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:14,533 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:14,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:14,536 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:15,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:15,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:15,859 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:15,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536630618]
[2022-01-31 17:31:15,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [536630618] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:15,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:15,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70
[2022-01-31 17:31:15,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980355575]
[2022-01-31 17:31:15,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:15,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states
[2022-01-31 17:31:15,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:15,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants.
[2022-01-31 17:31:15,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830
[2022-01-31 17:31:15,861 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 70 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 69 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:17,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:17,010 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions.
[2022-01-31 17:31:17,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states.
[2022-01-31 17:31:17,010 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 69 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79
[2022-01-31 17:31:17,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:17,011 INFO L225 Difference]: With dead ends: 96
[2022-01-31 17:31:17,011 INFO L226 Difference]: Without dead ends: 85
[2022-01-31 17:31:17,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=7038, Invalid=11594, Unknown=0, NotChecked=0, Total=18632
[2022-01-31 17:31:17,013 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:17,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:31:17,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2022-01-31 17:31:17,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85.
[2022-01-31 17:31:17,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:17,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions.
[2022-01-31 17:31:17,015 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 79
[2022-01-31 17:31:17,015 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:17,015 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions.
[2022-01-31 17:31:17,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 69 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:17,015 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions.
[2022-01-31 17:31:17,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81
[2022-01-31 17:31:17,016 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:17,016 INFO L514 BasicCegarLoop]: trace histogram [67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:17,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67
[2022-01-31 17:31:17,016 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:17,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:17,016 INFO L85 PathProgramCache]: Analyzing trace with hash -897630101, now seen corresponding path program 67 times
[2022-01-31 17:31:17,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:17,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465563823]
[2022-01-31 17:31:17,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:17,017 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:17,017 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:17,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:17,020 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:18,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:18,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:18,453 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:18,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465563823]
[2022-01-31 17:31:18,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [465563823] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:18,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:18,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71
[2022-01-31 17:31:18,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592639777]
[2022-01-31 17:31:18,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:18,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states
[2022-01-31 17:31:18,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:18,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants.
[2022-01-31 17:31:18,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970
[2022-01-31 17:31:18,454 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand has 71 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 70 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:20,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:20,263 INFO L93 Difference]: Finished difference Result 97 states and 99 transitions.
[2022-01-31 17:31:20,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states.
[2022-01-31 17:31:20,263 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 70 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80
[2022-01-31 17:31:20,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:20,265 INFO L225 Difference]: With dead ends: 97
[2022-01-31 17:31:20,265 INFO L226 Difference]: Without dead ends: 86
[2022-01-31 17:31:20,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182
[2022-01-31 17:31:20,267 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:20,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:31:20,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states.
[2022-01-31 17:31:20,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86.
[2022-01-31 17:31:20,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 80 states have (on average 1.025) internal successors, (82), 80 states have internal predecessors, (82), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:20,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions.
[2022-01-31 17:31:20,270 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 80
[2022-01-31 17:31:20,270 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:20,270 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions.
[2022-01-31 17:31:20,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 70 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:20,270 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions.
[2022-01-31 17:31:20,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2022-01-31 17:31:20,270 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:20,271 INFO L514 BasicCegarLoop]: trace histogram [68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:20,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68
[2022-01-31 17:31:20,271 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:20,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:20,272 INFO L85 PathProgramCache]: Analyzing trace with hash 146116575, now seen corresponding path program 68 times
[2022-01-31 17:31:20,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:20,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321185373]
[2022-01-31 17:31:20,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:20,273 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:20,273 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:20,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:20,284 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:21,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:21,930 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 17:31:21,930 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:21,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321185373]
[2022-01-31 17:31:21,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1321185373] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:21,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:21,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72
[2022-01-31 17:31:21,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925898065]
[2022-01-31 17:31:21,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:21,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states
[2022-01-31 17:31:21,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:21,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants.
[2022-01-31 17:31:21,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112
[2022-01-31 17:31:21,932 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand has 72 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 71 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:23,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:23,847 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions.
[2022-01-31 17:31:23,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states.
[2022-01-31 17:31:23,848 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 71 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81
[2022-01-31 17:31:23,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:23,848 INFO L225 Difference]: With dead ends: 98
[2022-01-31 17:31:23,848 INFO L226 Difference]: Without dead ends: 87
[2022-01-31 17:31:23,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=7455, Invalid=12285, Unknown=0, NotChecked=0, Total=19740
[2022-01-31 17:31:23,850 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:23,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:31:23,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states.
[2022-01-31 17:31:23,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87.
[2022-01-31 17:31:23,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 81 states have internal predecessors, (83), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:23,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions.
[2022-01-31 17:31:23,852 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 81
[2022-01-31 17:31:23,852 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:23,852 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions.
[2022-01-31 17:31:23,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 71 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:23,852 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions.
[2022-01-31 17:31:23,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83
[2022-01-31 17:31:23,853 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:23,853 INFO L514 BasicCegarLoop]: trace histogram [69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:23,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69
[2022-01-31 17:31:23,853 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:23,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:23,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1857474837, now seen corresponding path program 69 times
[2022-01-31 17:31:23,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:23,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302118888]
[2022-01-31 17:31:23,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:23,854 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:23,854 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:23,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:23,857 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:25,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:25,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:25,524 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:25,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302118888]
[2022-01-31 17:31:25,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [302118888] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:25,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:25,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73
[2022-01-31 17:31:25,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118843853]
[2022-01-31 17:31:25,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:25,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states
[2022-01-31 17:31:25,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:25,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants.
[2022-01-31 17:31:25,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256
[2022-01-31 17:31:25,525 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 73 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 72 states have internal predecessors, (78), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:26,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:26,944 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions.
[2022-01-31 17:31:26,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states.
[2022-01-31 17:31:26,944 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 72 states have internal predecessors, (78), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82
[2022-01-31 17:31:26,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:26,945 INFO L225 Difference]: With dead ends: 99
[2022-01-31 17:31:26,945 INFO L226 Difference]: Without dead ends: 88
[2022-01-31 17:31:26,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2484 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=7668, Invalid=12638, Unknown=0, NotChecked=0, Total=20306
[2022-01-31 17:31:26,946 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:26,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 69 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:31:26,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states.
[2022-01-31 17:31:26,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88.
[2022-01-31 17:31:26,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:26,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions.
[2022-01-31 17:31:26,948 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 82
[2022-01-31 17:31:26,948 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:26,948 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions.
[2022-01-31 17:31:26,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 72 states have internal predecessors, (78), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:26,948 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions.
[2022-01-31 17:31:26,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84
[2022-01-31 17:31:26,949 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:26,949 INFO L514 BasicCegarLoop]: trace histogram [70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:26,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70
[2022-01-31 17:31:26,949 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:26,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:26,949 INFO L85 PathProgramCache]: Analyzing trace with hash 455700831, now seen corresponding path program 70 times
[2022-01-31 17:31:26,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:26,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290477712]
[2022-01-31 17:31:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:26,950 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:26,950 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:26,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:26,953 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:28,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:28,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:28,397 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:28,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290477712]
[2022-01-31 17:31:28,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [290477712] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:28,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:28,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74
[2022-01-31 17:31:28,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65840793]
[2022-01-31 17:31:28,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:28,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states
[2022-01-31 17:31:28,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:28,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants.
[2022-01-31 17:31:28,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402
[2022-01-31 17:31:28,398 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 74 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 73 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:29,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:29,682 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions.
[2022-01-31 17:31:29,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states.
[2022-01-31 17:31:29,682 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 73 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83
[2022-01-31 17:31:29,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:29,682 INFO L225 Difference]: With dead ends: 100
[2022-01-31 17:31:29,682 INFO L226 Difference]: Without dead ends: 89
[2022-01-31 17:31:29,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2555 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=7884, Invalid=12996, Unknown=0, NotChecked=0, Total=20880
[2022-01-31 17:31:29,685 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:29,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:31:29,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states.
[2022-01-31 17:31:29,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89.
[2022-01-31 17:31:29,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:29,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions.
[2022-01-31 17:31:29,688 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 83
[2022-01-31 17:31:29,688 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:29,688 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions.
[2022-01-31 17:31:29,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 73 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:29,688 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions.
[2022-01-31 17:31:29,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85
[2022-01-31 17:31:29,688 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:29,688 INFO L514 BasicCegarLoop]: trace histogram [71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:29,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71
[2022-01-31 17:31:29,688 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:29,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:29,689 INFO L85 PathProgramCache]: Analyzing trace with hash -850297493, now seen corresponding path program 71 times
[2022-01-31 17:31:29,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:29,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273310565]
[2022-01-31 17:31:29,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:29,689 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:29,690 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:29,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:29,693 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:31,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:31,423 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:31,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273310565]
[2022-01-31 17:31:31,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1273310565] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:31,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:31,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75
[2022-01-31 17:31:31,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845194383]
[2022-01-31 17:31:31,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:31,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states
[2022-01-31 17:31:31,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:31,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants.
[2022-01-31 17:31:31,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550
[2022-01-31 17:31:31,425 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 75 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 74 states have internal predecessors, (80), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:32,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:32,702 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions.
[2022-01-31 17:31:32,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states.
[2022-01-31 17:31:32,702 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 74 states have internal predecessors, (80), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84
[2022-01-31 17:31:32,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:32,702 INFO L225 Difference]: With dead ends: 101
[2022-01-31 17:31:32,702 INFO L226 Difference]: Without dead ends: 90
[2022-01-31 17:31:32,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2627 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462
[2022-01-31 17:31:32,704 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:32,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:31:32,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2022-01-31 17:31:32,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90.
[2022-01-31 17:31:32,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 84 states have internal predecessors, (86), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:32,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions.
[2022-01-31 17:31:32,707 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 84
[2022-01-31 17:31:32,707 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:32,707 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions.
[2022-01-31 17:31:32,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 74 states have internal predecessors, (80), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:32,707 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions.
[2022-01-31 17:31:32,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86
[2022-01-31 17:31:32,707 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:32,707 INFO L514 BasicCegarLoop]: trace histogram [72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:32,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72
[2022-01-31 17:31:32,707 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:32,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:32,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1613427423, now seen corresponding path program 72 times
[2022-01-31 17:31:32,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:32,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906393790]
[2022-01-31 17:31:32,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:32,708 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:32,708 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:32,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:32,711 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:34,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:34,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:34,456 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:34,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906393790]
[2022-01-31 17:31:34,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [906393790] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:34,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:34,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76
[2022-01-31 17:31:34,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221001946]
[2022-01-31 17:31:34,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:34,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states
[2022-01-31 17:31:34,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:34,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants.
[2022-01-31 17:31:34,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700
[2022-01-31 17:31:34,458 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand has 76 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 75 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:36,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:36,586 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions.
[2022-01-31 17:31:36,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states.
[2022-01-31 17:31:36,587 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 75 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85
[2022-01-31 17:31:36,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:36,587 INFO L225 Difference]: With dead ends: 102
[2022-01-31 17:31:36,587 INFO L226 Difference]: Without dead ends: 91
[2022-01-31 17:31:36,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=8325, Invalid=13727, Unknown=0, NotChecked=0, Total=22052
[2022-01-31 17:31:36,596 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:36,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:31:36,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states.
[2022-01-31 17:31:36,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91.
[2022-01-31 17:31:36,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 85 states have internal predecessors, (87), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:36,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions.
[2022-01-31 17:31:36,599 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 85
[2022-01-31 17:31:36,599 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:36,599 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions.
[2022-01-31 17:31:36,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 75 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:36,599 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions.
[2022-01-31 17:31:36,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87
[2022-01-31 17:31:36,599 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:36,599 INFO L514 BasicCegarLoop]: trace histogram [73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:36,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73
[2022-01-31 17:31:36,600 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:36,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:36,600 INFO L85 PathProgramCache]: Analyzing trace with hash 679488491, now seen corresponding path program 73 times
[2022-01-31 17:31:36,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:36,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155580433]
[2022-01-31 17:31:36,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:36,601 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:36,601 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:36,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:36,604 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:38,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:38,420 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 17:31:38,420 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:38,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155580433]
[2022-01-31 17:31:38,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1155580433] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:38,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:38,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77
[2022-01-31 17:31:38,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575034781]
[2022-01-31 17:31:38,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:38,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states
[2022-01-31 17:31:38,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:38,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants.
[2022-01-31 17:31:38,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852
[2022-01-31 17:31:38,422 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand has 77 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 76 states have internal predecessors, (82), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:40,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:40,450 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions.
[2022-01-31 17:31:40,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states.
[2022-01-31 17:31:40,451 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 76 states have internal predecessors, (82), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86
[2022-01-31 17:31:40,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:40,451 INFO L225 Difference]: With dead ends: 103
[2022-01-31 17:31:40,451 INFO L226 Difference]: Without dead ends: 92
[2022-01-31 17:31:40,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2774 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=8550, Invalid=14100, Unknown=0, NotChecked=0, Total=22650
[2022-01-31 17:31:40,453 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:40,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:31:40,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2022-01-31 17:31:40,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92.
[2022-01-31 17:31:40,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 86 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:40,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions.
[2022-01-31 17:31:40,456 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 86
[2022-01-31 17:31:40,456 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:40,456 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions.
[2022-01-31 17:31:40,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 76 states have internal predecessors, (82), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:40,456 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions.
[2022-01-31 17:31:40,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88
[2022-01-31 17:31:40,456 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:40,456 INFO L514 BasicCegarLoop]: trace histogram [74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:40,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74
[2022-01-31 17:31:40,457 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:40,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:40,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1792152671, now seen corresponding path program 74 times
[2022-01-31 17:31:40,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:40,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933178628]
[2022-01-31 17:31:40,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:40,458 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:40,458 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:40,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:40,464 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:41,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:41,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:41,883 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:41,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933178628]
[2022-01-31 17:31:41,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [933178628] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:41,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:41,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78
[2022-01-31 17:31:41,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113325557]
[2022-01-31 17:31:41,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:41,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states
[2022-01-31 17:31:41,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:41,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants.
[2022-01-31 17:31:41,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006
[2022-01-31 17:31:41,885 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand has 78 states, 78 states have (on average 1.064102564102564) internal successors, (83), 77 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:43,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:43,277 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions.
[2022-01-31 17:31:43,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states.
[2022-01-31 17:31:43,277 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.064102564102564) internal successors, (83), 77 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87
[2022-01-31 17:31:43,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:43,278 INFO L225 Difference]: With dead ends: 104
[2022-01-31 17:31:43,278 INFO L226 Difference]: Without dead ends: 93
[2022-01-31 17:31:43,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2849 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=8778, Invalid=14478, Unknown=0, NotChecked=0, Total=23256
[2022-01-31 17:31:43,279 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:43,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:31:43,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2022-01-31 17:31:43,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93.
[2022-01-31 17:31:43,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:43,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions.
[2022-01-31 17:31:43,282 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 87
[2022-01-31 17:31:43,282 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:43,282 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions.
[2022-01-31 17:31:43,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.064102564102564) internal successors, (83), 77 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:43,282 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions.
[2022-01-31 17:31:43,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89
[2022-01-31 17:31:43,283 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:43,283 INFO L514 BasicCegarLoop]: trace histogram [75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:43,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75
[2022-01-31 17:31:43,283 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:43,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:43,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1925003883, now seen corresponding path program 75 times
[2022-01-31 17:31:43,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:43,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415516948]
[2022-01-31 17:31:43,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:43,284 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:43,284 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:43,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:43,287 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:44,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:44,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:44,765 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:44,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415516948]
[2022-01-31 17:31:44,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1415516948] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:44,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:44,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79
[2022-01-31 17:31:44,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074950713]
[2022-01-31 17:31:44,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:44,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states
[2022-01-31 17:31:44,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:44,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants.
[2022-01-31 17:31:44,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162
[2022-01-31 17:31:44,767 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand has 79 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 78 states have internal predecessors, (84), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:46,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:46,991 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions.
[2022-01-31 17:31:46,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states.
[2022-01-31 17:31:46,992 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 78 states have internal predecessors, (84), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 88
[2022-01-31 17:31:46,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:46,992 INFO L225 Difference]: With dead ends: 105
[2022-01-31 17:31:46,992 INFO L226 Difference]: Without dead ends: 94
[2022-01-31 17:31:46,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2925 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870
[2022-01-31 17:31:46,993 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:46,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:31:46,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2022-01-31 17:31:46,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94.
[2022-01-31 17:31:46,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 88 states have internal predecessors, (90), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:46,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions.
[2022-01-31 17:31:46,996 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 88
[2022-01-31 17:31:46,997 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:46,997 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions.
[2022-01-31 17:31:46,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 78 states have internal predecessors, (84), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:46,997 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions.
[2022-01-31 17:31:46,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90
[2022-01-31 17:31:46,997 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:46,997 INFO L514 BasicCegarLoop]: trace histogram [76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:46,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76
[2022-01-31 17:31:46,997 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:46,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:46,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1748424159, now seen corresponding path program 76 times
[2022-01-31 17:31:46,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:46,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082123133]
[2022-01-31 17:31:46,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:46,998 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:46,998 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:46,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:47,002 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:48,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:48,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:48,360 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:48,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082123133]
[2022-01-31 17:31:48,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2082123133] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:48,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:48,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80
[2022-01-31 17:31:48,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055644416]
[2022-01-31 17:31:48,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:48,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states
[2022-01-31 17:31:48,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:48,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants.
[2022-01-31 17:31:48,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320
[2022-01-31 17:31:48,361 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand has 80 states, 80 states have (on average 1.0625) internal successors, (85), 79 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:49,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:49,780 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions.
[2022-01-31 17:31:49,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states.
[2022-01-31 17:31:49,781 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.0625) internal successors, (85), 79 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89
[2022-01-31 17:31:49,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:49,781 INFO L225 Difference]: With dead ends: 106
[2022-01-31 17:31:49,781 INFO L226 Difference]: Without dead ends: 95
[2022-01-31 17:31:49,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3002 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=9243, Invalid=15249, Unknown=0, NotChecked=0, Total=24492
[2022-01-31 17:31:49,783 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:49,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:31:49,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states.
[2022-01-31 17:31:49,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95.
[2022-01-31 17:31:49,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 89 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:49,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions.
[2022-01-31 17:31:49,786 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 89
[2022-01-31 17:31:49,786 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:49,786 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions.
[2022-01-31 17:31:49,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.0625) internal successors, (85), 79 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:49,786 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions.
[2022-01-31 17:31:49,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91
[2022-01-31 17:31:49,787 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:49,787 INFO L514 BasicCegarLoop]: trace histogram [77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:49,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77
[2022-01-31 17:31:49,787 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:49,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:49,787 INFO L85 PathProgramCache]: Analyzing trace with hash 569420011, now seen corresponding path program 77 times
[2022-01-31 17:31:49,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:49,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521575837]
[2022-01-31 17:31:49,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:49,790 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:49,790 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:49,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:49,794 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:51,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:51,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:51,587 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:51,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521575837]
[2022-01-31 17:31:51,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1521575837] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:51,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:51,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81
[2022-01-31 17:31:51,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513254109]
[2022-01-31 17:31:51,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:51,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states
[2022-01-31 17:31:51,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:51,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants.
[2022-01-31 17:31:51,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480
[2022-01-31 17:31:51,593 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 81 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 80 states have internal predecessors, (86), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:53,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:53,123 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions.
[2022-01-31 17:31:53,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states.
[2022-01-31 17:31:53,124 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 80 states have internal predecessors, (86), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 90
[2022-01-31 17:31:53,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:53,126 INFO L225 Difference]: With dead ends: 107
[2022-01-31 17:31:53,126 INFO L226 Difference]: Without dead ends: 96
[2022-01-31 17:31:53,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=9480, Invalid=15642, Unknown=0, NotChecked=0, Total=25122
[2022-01-31 17:31:53,129 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:53,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:31:53,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2022-01-31 17:31:53,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96.
[2022-01-31 17:31:53,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 90 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:53,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions.
[2022-01-31 17:31:53,133 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 90
[2022-01-31 17:31:53,133 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:53,133 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions.
[2022-01-31 17:31:53,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 80 states have internal predecessors, (86), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:53,133 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions.
[2022-01-31 17:31:53,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92
[2022-01-31 17:31:53,133 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:53,134 INFO L514 BasicCegarLoop]: trace histogram [78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:53,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78
[2022-01-31 17:31:53,134 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:53,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:53,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1619970209, now seen corresponding path program 78 times
[2022-01-31 17:31:53,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:53,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270145865]
[2022-01-31 17:31:53,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:53,135 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:53,135 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:53,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:53,150 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:54,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:54,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:54,432 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:54,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270145865]
[2022-01-31 17:31:54,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1270145865] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:54,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:54,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82
[2022-01-31 17:31:54,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581968108]
[2022-01-31 17:31:54,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:54,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states
[2022-01-31 17:31:54,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:54,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants.
[2022-01-31 17:31:54,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642
[2022-01-31 17:31:54,434 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 82 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 81 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:55,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:55,945 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions.
[2022-01-31 17:31:55,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states.
[2022-01-31 17:31:55,945 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 81 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91
[2022-01-31 17:31:55,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:55,947 INFO L225 Difference]: With dead ends: 108
[2022-01-31 17:31:55,947 INFO L226 Difference]: Without dead ends: 97
[2022-01-31 17:31:55,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3159 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=9720, Invalid=16040, Unknown=0, NotChecked=0, Total=25760
[2022-01-31 17:31:55,950 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:55,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:31:55,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2022-01-31 17:31:55,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97.
[2022-01-31 17:31:55,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 91 states have (on average 1.021978021978022) internal successors, (93), 91 states have internal predecessors, (93), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:55,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions.
[2022-01-31 17:31:55,953 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 91
[2022-01-31 17:31:55,953 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:55,953 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions.
[2022-01-31 17:31:55,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 81 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:55,953 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions.
[2022-01-31 17:31:55,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93
[2022-01-31 17:31:55,954 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:55,954 INFO L514 BasicCegarLoop]: trace histogram [79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:55,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79
[2022-01-31 17:31:55,954 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:55,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:55,954 INFO L85 PathProgramCache]: Analyzing trace with hash -771590293, now seen corresponding path program 79 times
[2022-01-31 17:31:55,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:55,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461960150]
[2022-01-31 17:31:55,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:55,955 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:55,955 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:55,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:55,959 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:57,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:31:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:31:57,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:31:57,297 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:31:57,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461960150]
[2022-01-31 17:31:57,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [461960150] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:31:57,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:31:57,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83
[2022-01-31 17:31:57,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076276247]
[2022-01-31 17:31:57,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:31:57,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states
[2022-01-31 17:31:57,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:31:57,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants.
[2022-01-31 17:31:57,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806
[2022-01-31 17:31:57,300 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand has 83 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 82 states have internal predecessors, (88), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:58,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:31:58,843 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions.
[2022-01-31 17:31:58,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states.
[2022-01-31 17:31:58,843 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 82 states have internal predecessors, (88), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92
[2022-01-31 17:31:58,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:31:58,843 INFO L225 Difference]: With dead ends: 109
[2022-01-31 17:31:58,843 INFO L226 Difference]: Without dead ends: 98
[2022-01-31 17:31:58,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3239 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406
[2022-01-31 17:31:58,846 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:31:58,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:31:58,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states.
[2022-01-31 17:31:58,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98.
[2022-01-31 17:31:58,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 92 states have internal predecessors, (94), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:31:58,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions.
[2022-01-31 17:31:58,848 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 92
[2022-01-31 17:31:58,848 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:31:58,848 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions.
[2022-01-31 17:31:58,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 82 states have internal predecessors, (88), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:31:58,849 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions.
[2022-01-31 17:31:58,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94
[2022-01-31 17:31:58,849 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:31:58,849 INFO L514 BasicCegarLoop]: trace histogram [80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:31:58,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80
[2022-01-31 17:31:58,849 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:31:58,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:31:58,854 INFO L85 PathProgramCache]: Analyzing trace with hash -241616673, now seen corresponding path program 80 times
[2022-01-31 17:31:58,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:31:58,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391064430]
[2022-01-31 17:31:58,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:31:58,855 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:31:58,855 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:31:58,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:31:58,859 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:31:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:00,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:00,196 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:00,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391064430]
[2022-01-31 17:32:00,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [391064430] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:00,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:00,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84
[2022-01-31 17:32:00,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946351408]
[2022-01-31 17:32:00,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:00,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states
[2022-01-31 17:32:00,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:00,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants.
[2022-01-31 17:32:00,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972
[2022-01-31 17:32:00,198 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand has 84 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 83 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:01,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:01,793 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions.
[2022-01-31 17:32:01,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states.
[2022-01-31 17:32:01,794 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 83 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93
[2022-01-31 17:32:01,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:01,794 INFO L225 Difference]: With dead ends: 110
[2022-01-31 17:32:01,794 INFO L226 Difference]: Without dead ends: 99
[2022-01-31 17:32:01,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3320 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=10209, Invalid=16851, Unknown=0, NotChecked=0, Total=27060
[2022-01-31 17:32:01,797 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:01,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:32:01,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2022-01-31 17:32:01,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99.
[2022-01-31 17:32:01,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 93 states have (on average 1.021505376344086) internal successors, (95), 93 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:01,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions.
[2022-01-31 17:32:01,804 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 93
[2022-01-31 17:32:01,804 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:01,804 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions.
[2022-01-31 17:32:01,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 83 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:01,805 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions.
[2022-01-31 17:32:01,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95
[2022-01-31 17:32:01,805 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:01,805 INFO L514 BasicCegarLoop]: trace histogram [81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:01,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81
[2022-01-31 17:32:01,805 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:01,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:01,805 INFO L85 PathProgramCache]: Analyzing trace with hash -992303637, now seen corresponding path program 81 times
[2022-01-31 17:32:01,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:01,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731647363]
[2022-01-31 17:32:01,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:01,806 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:01,806 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:01,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:01,810 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:03,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:03,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:03,557 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:03,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731647363]
[2022-01-31 17:32:03,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1731647363] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:03,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:03,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85
[2022-01-31 17:32:03,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568741146]
[2022-01-31 17:32:03,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:03,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states
[2022-01-31 17:32:03,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:03,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants.
[2022-01-31 17:32:03,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140
[2022-01-31 17:32:03,559 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand has 85 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 84 states have internal predecessors, (90), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:06,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:06,000 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions.
[2022-01-31 17:32:06,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states.
[2022-01-31 17:32:06,000 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 84 states have internal predecessors, (90), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94
[2022-01-31 17:32:06,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:06,001 INFO L225 Difference]: With dead ends: 111
[2022-01-31 17:32:06,001 INFO L226 Difference]: Without dead ends: 100
[2022-01-31 17:32:06,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3402 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=10458, Invalid=17264, Unknown=0, NotChecked=0, Total=27722
[2022-01-31 17:32:06,003 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:06,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:32:06,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states.
[2022-01-31 17:32:06,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100.
[2022-01-31 17:32:06,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 94 states have internal predecessors, (96), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:06,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions.
[2022-01-31 17:32:06,007 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 94
[2022-01-31 17:32:06,007 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:06,007 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions.
[2022-01-31 17:32:06,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 84 states have internal predecessors, (90), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:06,007 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions.
[2022-01-31 17:32:06,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96
[2022-01-31 17:32:06,007 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:06,008 INFO L514 BasicCegarLoop]: trace histogram [82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:06,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82
[2022-01-31 17:32:06,008 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:06,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:06,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1506204255, now seen corresponding path program 82 times
[2022-01-31 17:32:06,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:06,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104047527]
[2022-01-31 17:32:06,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:06,009 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:06,009 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:06,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:06,022 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:07,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:07,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:07,505 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:07,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104047527]
[2022-01-31 17:32:07,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [104047527] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:07,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:07,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86
[2022-01-31 17:32:07,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025543351]
[2022-01-31 17:32:07,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:07,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states
[2022-01-31 17:32:07,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:07,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants.
[2022-01-31 17:32:07,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310
[2022-01-31 17:32:07,507 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand has 86 states, 86 states have (on average 1.058139534883721) internal successors, (91), 85 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:09,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:09,150 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions.
[2022-01-31 17:32:09,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states.
[2022-01-31 17:32:09,150 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.058139534883721) internal successors, (91), 85 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95
[2022-01-31 17:32:09,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:09,150 INFO L225 Difference]: With dead ends: 112
[2022-01-31 17:32:09,150 INFO L226 Difference]: Without dead ends: 101
[2022-01-31 17:32:09,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=10710, Invalid=17682, Unknown=0, NotChecked=0, Total=28392
[2022-01-31 17:32:09,152 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:09,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:32:09,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2022-01-31 17:32:09,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101.
[2022-01-31 17:32:09,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 95 states have internal predecessors, (97), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:09,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions.
[2022-01-31 17:32:09,154 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 95
[2022-01-31 17:32:09,155 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:09,155 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions.
[2022-01-31 17:32:09,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.058139534883721) internal successors, (91), 85 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:09,155 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions.
[2022-01-31 17:32:09,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97
[2022-01-31 17:32:09,155 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:09,155 INFO L514 BasicCegarLoop]: trace histogram [83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:09,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83
[2022-01-31 17:32:09,156 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1650537579, now seen corresponding path program 83 times
[2022-01-31 17:32:09,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:09,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449491992]
[2022-01-31 17:32:09,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:09,157 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:09,157 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:09,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:09,163 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:10,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:10,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:10,567 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:10,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449491992]
[2022-01-31 17:32:10,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1449491992] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:10,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:10,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87
[2022-01-31 17:32:10,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501992774]
[2022-01-31 17:32:10,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:10,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states
[2022-01-31 17:32:10,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:10,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants.
[2022-01-31 17:32:10,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482
[2022-01-31 17:32:10,568 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand has 87 states, 87 states have (on average 1.0574712643678161) internal successors, (92), 86 states have internal predecessors, (92), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:13,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:13,322 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions.
[2022-01-31 17:32:13,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states.
[2022-01-31 17:32:13,322 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 1.0574712643678161) internal successors, (92), 86 states have internal predecessors, (92), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96
[2022-01-31 17:32:13,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:13,322 INFO L225 Difference]: With dead ends: 113
[2022-01-31 17:32:13,323 INFO L226 Difference]: Without dead ends: 102
[2022-01-31 17:32:13,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3569 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070
[2022-01-31 17:32:13,324 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:13,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 29 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:32:13,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states.
[2022-01-31 17:32:13,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102.
[2022-01-31 17:32:13,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 96 states have internal predecessors, (98), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:13,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions.
[2022-01-31 17:32:13,326 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 96
[2022-01-31 17:32:13,327 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:13,327 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions.
[2022-01-31 17:32:13,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 1.0574712643678161) internal successors, (92), 86 states have internal predecessors, (92), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:13,327 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions.
[2022-01-31 17:32:13,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2022-01-31 17:32:13,327 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:13,327 INFO L514 BasicCegarLoop]: trace histogram [84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:13,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84
[2022-01-31 17:32:13,327 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:13,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:13,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1829903327, now seen corresponding path program 84 times
[2022-01-31 17:32:13,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:13,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823113455]
[2022-01-31 17:32:13,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:13,328 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:13,328 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:13,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:13,337 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:15,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:15,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:15,548 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:15,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823113455]
[2022-01-31 17:32:15,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [823113455] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:15,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:15,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88
[2022-01-31 17:32:15,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861710262]
[2022-01-31 17:32:15,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:15,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states
[2022-01-31 17:32:15,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:15,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants.
[2022-01-31 17:32:15,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656
[2022-01-31 17:32:15,551 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand has 88 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 87 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:17,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:17,824 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions.
[2022-01-31 17:32:17,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states.
[2022-01-31 17:32:17,838 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 87 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97
[2022-01-31 17:32:17,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:17,839 INFO L225 Difference]: With dead ends: 114
[2022-01-31 17:32:17,839 INFO L226 Difference]: Without dead ends: 103
[2022-01-31 17:32:17,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3654 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=11223, Invalid=18533, Unknown=0, NotChecked=0, Total=29756
[2022-01-31 17:32:17,852 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:17,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:32:17,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2022-01-31 17:32:17,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103.
[2022-01-31 17:32:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 97 states have internal predecessors, (99), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:17,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions.
[2022-01-31 17:32:17,855 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 97
[2022-01-31 17:32:17,855 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:17,855 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions.
[2022-01-31 17:32:17,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 87 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:17,855 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions.
[2022-01-31 17:32:17,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-01-31 17:32:17,855 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:17,855 INFO L514 BasicCegarLoop]: trace histogram [85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:17,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85
[2022-01-31 17:32:17,855 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:17,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:17,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1199693077, now seen corresponding path program 85 times
[2022-01-31 17:32:17,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:17,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232740850]
[2022-01-31 17:32:17,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:17,856 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:17,856 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:17,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:17,860 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:20,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:20,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:20,183 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:20,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232740850]
[2022-01-31 17:32:20,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1232740850] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:20,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:20,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89
[2022-01-31 17:32:20,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627767250]
[2022-01-31 17:32:20,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:20,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states
[2022-01-31 17:32:20,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:20,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants.
[2022-01-31 17:32:20,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832
[2022-01-31 17:32:20,185 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 89 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 88 states have internal predecessors, (94), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:22,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:22,969 INFO L93 Difference]: Finished difference Result 115 states and 117 transitions.
[2022-01-31 17:32:22,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states.
[2022-01-31 17:32:22,969 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 88 states have internal predecessors, (94), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98
[2022-01-31 17:32:22,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:22,969 INFO L225 Difference]: With dead ends: 115
[2022-01-31 17:32:22,969 INFO L226 Difference]: Without dead ends: 104
[2022-01-31 17:32:22,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3740 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=11484, Invalid=18966, Unknown=0, NotChecked=0, Total=30450
[2022-01-31 17:32:22,971 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:22,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:32:22,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2022-01-31 17:32:22,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104.
[2022-01-31 17:32:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 98 states have internal predecessors, (100), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:22,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions.
[2022-01-31 17:32:22,974 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 98
[2022-01-31 17:32:22,974 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:22,974 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions.
[2022-01-31 17:32:22,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 88 states have internal predecessors, (94), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:22,974 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions.
[2022-01-31 17:32:22,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100
[2022-01-31 17:32:22,975 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:22,975 INFO L514 BasicCegarLoop]: trace histogram [86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:22,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86
[2022-01-31 17:32:22,975 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:22,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:22,975 INFO L85 PathProgramCache]: Analyzing trace with hash -627901089, now seen corresponding path program 86 times
[2022-01-31 17:32:22,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:22,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339481099]
[2022-01-31 17:32:22,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:22,976 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:22,976 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:22,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:22,980 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:25,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:25,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:25,431 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:25,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339481099]
[2022-01-31 17:32:25,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [339481099] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:25,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:25,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90
[2022-01-31 17:32:25,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25179112]
[2022-01-31 17:32:25,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:25,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states
[2022-01-31 17:32:25,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:25,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants.
[2022-01-31 17:32:25,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010
[2022-01-31 17:32:25,433 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 90 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 89 states have internal predecessors, (95), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:28,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:28,250 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions.
[2022-01-31 17:32:28,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states.
[2022-01-31 17:32:28,250 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 89 states have internal predecessors, (95), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99
[2022-01-31 17:32:28,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:28,251 INFO L225 Difference]: With dead ends: 116
[2022-01-31 17:32:28,251 INFO L226 Difference]: Without dead ends: 105
[2022-01-31 17:32:28,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3827 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=11748, Invalid=19404, Unknown=0, NotChecked=0, Total=31152
[2022-01-31 17:32:28,252 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:28,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:32:28,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2022-01-31 17:32:28,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105.
[2022-01-31 17:32:28,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 99 states have (on average 1.02020202020202) internal successors, (101), 99 states have internal predecessors, (101), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:28,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions.
[2022-01-31 17:32:28,257 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 99
[2022-01-31 17:32:28,257 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:28,257 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions.
[2022-01-31 17:32:28,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 89 states have internal predecessors, (95), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:28,257 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions.
[2022-01-31 17:32:28,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101
[2022-01-31 17:32:28,257 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:28,257 INFO L514 BasicCegarLoop]: trace histogram [87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:28,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87
[2022-01-31 17:32:28,257 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:28,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:28,258 INFO L85 PathProgramCache]: Analyzing trace with hash -82218645, now seen corresponding path program 87 times
[2022-01-31 17:32:28,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:28,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300118531]
[2022-01-31 17:32:28,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:28,259 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:28,259 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:28,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:28,266 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:30,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:30,484 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:30,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300118531]
[2022-01-31 17:32:30,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [300118531] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:30,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:30,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91
[2022-01-31 17:32:30,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911988812]
[2022-01-31 17:32:30,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:30,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states
[2022-01-31 17:32:30,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:30,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants.
[2022-01-31 17:32:30,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190
[2022-01-31 17:32:30,486 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 91 states, 91 states have (on average 1.054945054945055) internal successors, (96), 90 states have internal predecessors, (96), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:32,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:32,409 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions.
[2022-01-31 17:32:32,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states.
[2022-01-31 17:32:32,410 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 1.054945054945055) internal successors, (96), 90 states have internal predecessors, (96), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100
[2022-01-31 17:32:32,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:32,411 INFO L225 Difference]: With dead ends: 117
[2022-01-31 17:32:32,411 INFO L226 Difference]: Without dead ends: 106
[2022-01-31 17:32:32,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3915 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862
[2022-01-31 17:32:32,412 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:32,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:32:32,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states.
[2022-01-31 17:32:32,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106.
[2022-01-31 17:32:32,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 100 states have (on average 1.02) internal successors, (102), 100 states have internal predecessors, (102), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:32,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions.
[2022-01-31 17:32:32,425 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 100
[2022-01-31 17:32:32,425 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:32,425 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions.
[2022-01-31 17:32:32,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 1.054945054945055) internal successors, (96), 90 states have internal predecessors, (96), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:32,425 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions.
[2022-01-31 17:32:32,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102
[2022-01-31 17:32:32,425 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:32,425 INFO L514 BasicCegarLoop]: trace histogram [88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:32,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88
[2022-01-31 17:32:32,426 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:32,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:32,426 INFO L85 PathProgramCache]: Analyzing trace with hash -345932065, now seen corresponding path program 88 times
[2022-01-31 17:32:32,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:32,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839749378]
[2022-01-31 17:32:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:32,427 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:32,427 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:32,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:32,431 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:34,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:34,486 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:34,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839749378]
[2022-01-31 17:32:34,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1839749378] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:34,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:34,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92
[2022-01-31 17:32:34,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600157569]
[2022-01-31 17:32:34,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:34,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states
[2022-01-31 17:32:34,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:34,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants.
[2022-01-31 17:32:34,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372
[2022-01-31 17:32:34,488 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand has 92 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 91 states have internal predecessors, (97), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:36,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:36,540 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions.
[2022-01-31 17:32:36,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states.
[2022-01-31 17:32:36,540 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 91 states have internal predecessors, (97), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101
[2022-01-31 17:32:36,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:36,557 INFO L225 Difference]: With dead ends: 118
[2022-01-31 17:32:36,557 INFO L226 Difference]: Without dead ends: 107
[2022-01-31 17:32:36,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4004 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=12285, Invalid=20295, Unknown=0, NotChecked=0, Total=32580
[2022-01-31 17:32:36,559 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:36,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:32:36,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2022-01-31 17:32:36,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107.
[2022-01-31 17:32:36,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 101 states have internal predecessors, (103), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:36,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions.
[2022-01-31 17:32:36,562 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 101
[2022-01-31 17:32:36,562 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:36,562 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions.
[2022-01-31 17:32:36,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 91 states have internal predecessors, (97), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:36,562 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions.
[2022-01-31 17:32:36,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103
[2022-01-31 17:32:36,563 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:36,563 INFO L514 BasicCegarLoop]: trace histogram [89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:36,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89
[2022-01-31 17:32:36,563 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:36,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:36,563 INFO L85 PathProgramCache]: Analyzing trace with hash 68886507, now seen corresponding path program 89 times
[2022-01-31 17:32:36,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:36,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831204086]
[2022-01-31 17:32:36,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:36,564 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:36,564 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:36,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:36,568 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:38,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:38,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:38,212 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:38,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831204086]
[2022-01-31 17:32:38,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [831204086] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:38,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:38,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93
[2022-01-31 17:32:38,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888198248]
[2022-01-31 17:32:38,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:38,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states
[2022-01-31 17:32:38,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:38,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants.
[2022-01-31 17:32:38,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556
[2022-01-31 17:32:38,215 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand has 93 states, 93 states have (on average 1.053763440860215) internal successors, (98), 92 states have internal predecessors, (98), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:40,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:40,087 INFO L93 Difference]: Finished difference Result 119 states and 121 transitions.
[2022-01-31 17:32:40,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states.
[2022-01-31 17:32:40,088 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 1.053763440860215) internal successors, (98), 92 states have internal predecessors, (98), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102
[2022-01-31 17:32:40,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:40,088 INFO L225 Difference]: With dead ends: 119
[2022-01-31 17:32:40,088 INFO L226 Difference]: Without dead ends: 108
[2022-01-31 17:32:40,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4094 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=12558, Invalid=20748, Unknown=0, NotChecked=0, Total=33306
[2022-01-31 17:32:40,090 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:40,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 79 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:32:40,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states.
[2022-01-31 17:32:40,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108.
[2022-01-31 17:32:40,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:40,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions.
[2022-01-31 17:32:40,092 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 102
[2022-01-31 17:32:40,092 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:40,093 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions.
[2022-01-31 17:32:40,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 1.053763440860215) internal successors, (98), 92 states have internal predecessors, (98), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:40,093 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions.
[2022-01-31 17:32:40,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104
[2022-01-31 17:32:40,093 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:40,093 INFO L514 BasicCegarLoop]: trace histogram [90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:40,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90
[2022-01-31 17:32:40,093 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:40,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:40,093 INFO L85 PathProgramCache]: Analyzing trace with hash 43360351, now seen corresponding path program 90 times
[2022-01-31 17:32:40,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:40,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742986979]
[2022-01-31 17:32:40,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:40,095 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:40,095 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:40,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:40,099 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:41,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:41,769 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 17:32:41,769 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:41,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742986979]
[2022-01-31 17:32:41,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1742986979] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:41,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:41,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94
[2022-01-31 17:32:41,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943162085]
[2022-01-31 17:32:41,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:41,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states
[2022-01-31 17:32:41,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:41,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants.
[2022-01-31 17:32:41,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742
[2022-01-31 17:32:41,770 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand has 94 states, 94 states have (on average 1.053191489361702) internal successors, (99), 93 states have internal predecessors, (99), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:43,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:43,732 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions.
[2022-01-31 17:32:43,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states.
[2022-01-31 17:32:43,732 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.053191489361702) internal successors, (99), 93 states have internal predecessors, (99), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103
[2022-01-31 17:32:43,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:43,733 INFO L225 Difference]: With dead ends: 120
[2022-01-31 17:32:43,733 INFO L226 Difference]: Without dead ends: 109
[2022-01-31 17:32:43,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4185 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=12834, Invalid=21206, Unknown=0, NotChecked=0, Total=34040
[2022-01-31 17:32:43,735 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:43,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:32:43,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2022-01-31 17:32:43,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109.
[2022-01-31 17:32:43,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 103 states have internal predecessors, (105), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions.
[2022-01-31 17:32:43,738 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 103
[2022-01-31 17:32:43,738 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:43,738 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions.
[2022-01-31 17:32:43,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 1.053191489361702) internal successors, (99), 93 states have internal predecessors, (99), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:43,738 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions.
[2022-01-31 17:32:43,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105
[2022-01-31 17:32:43,738 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:43,738 INFO L514 BasicCegarLoop]: trace histogram [91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:43,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91
[2022-01-31 17:32:43,738 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:43,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:43,739 INFO L85 PathProgramCache]: Analyzing trace with hash -747950485, now seen corresponding path program 91 times
[2022-01-31 17:32:43,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:43,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628504779]
[2022-01-31 17:32:43,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:43,739 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:43,740 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:43,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:43,744 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:45,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:45,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:45,411 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:45,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628504779]
[2022-01-31 17:32:45,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1628504779] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:45,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:45,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95
[2022-01-31 17:32:45,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826553459]
[2022-01-31 17:32:45,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:45,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states
[2022-01-31 17:32:45,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:45,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants.
[2022-01-31 17:32:45,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930
[2022-01-31 17:32:45,414 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand has 95 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 94 states have internal predecessors, (100), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:48,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:48,351 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions.
[2022-01-31 17:32:48,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states.
[2022-01-31 17:32:48,352 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 94 states have internal predecessors, (100), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104
[2022-01-31 17:32:48,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:48,352 INFO L225 Difference]: With dead ends: 121
[2022-01-31 17:32:48,352 INFO L226 Difference]: Without dead ends: 110
[2022-01-31 17:32:48,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4277 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782
[2022-01-31 17:32:48,354 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:48,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:32:48,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states.
[2022-01-31 17:32:48,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110.
[2022-01-31 17:32:48,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 104 states have (on average 1.0192307692307692) internal successors, (106), 104 states have internal predecessors, (106), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions.
[2022-01-31 17:32:48,356 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 104
[2022-01-31 17:32:48,357 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:48,357 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions.
[2022-01-31 17:32:48,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 94 states have internal predecessors, (100), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:48,357 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions.
[2022-01-31 17:32:48,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106
[2022-01-31 17:32:48,357 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:48,357 INFO L514 BasicCegarLoop]: trace histogram [92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:48,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92
[2022-01-31 17:32:48,357 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:48,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:48,357 INFO L85 PathProgramCache]: Analyzing trace with hash 491217375, now seen corresponding path program 92 times
[2022-01-31 17:32:48,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:48,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121581766]
[2022-01-31 17:32:48,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:48,358 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:48,358 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:48,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:48,366 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:50,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:50,403 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:50,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121581766]
[2022-01-31 17:32:50,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [121581766] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:50,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:50,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96
[2022-01-31 17:32:50,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182426778]
[2022-01-31 17:32:50,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:50,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states
[2022-01-31 17:32:50,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:50,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants.
[2022-01-31 17:32:50,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120
[2022-01-31 17:32:50,405 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand has 96 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 95 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:52,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:52,471 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions.
[2022-01-31 17:32:52,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states.
[2022-01-31 17:32:52,472 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 95 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105
[2022-01-31 17:32:52,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:52,472 INFO L225 Difference]: With dead ends: 122
[2022-01-31 17:32:52,472 INFO L226 Difference]: Without dead ends: 111
[2022-01-31 17:32:52,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4370 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=13395, Invalid=22137, Unknown=0, NotChecked=0, Total=35532
[2022-01-31 17:32:52,473 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:52,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:32:52,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states.
[2022-01-31 17:32:52,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111.
[2022-01-31 17:32:52,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 105 states have (on average 1.019047619047619) internal successors, (107), 105 states have internal predecessors, (107), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:52,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions.
[2022-01-31 17:32:52,500 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 105
[2022-01-31 17:32:52,500 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:52,500 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions.
[2022-01-31 17:32:52,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 95 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:52,501 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions.
[2022-01-31 17:32:52,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107
[2022-01-31 17:32:52,501 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:52,501 INFO L514 BasicCegarLoop]: trace histogram [93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:52,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93
[2022-01-31 17:32:52,502 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:52,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:52,503 INFO L85 PathProgramCache]: Analyzing trace with hash 250715371, now seen corresponding path program 93 times
[2022-01-31 17:32:52,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:52,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971070934]
[2022-01-31 17:32:52,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:52,504 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:52,504 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:52,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:52,510 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:54,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:54,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:54,299 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:54,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971070934]
[2022-01-31 17:32:54,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [971070934] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:54,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:54,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97
[2022-01-31 17:32:54,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121495369]
[2022-01-31 17:32:54,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:54,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states
[2022-01-31 17:32:54,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:54,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants.
[2022-01-31 17:32:54,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312
[2022-01-31 17:32:54,301 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 97 states, 97 states have (on average 1.0515463917525774) internal successors, (102), 96 states have internal predecessors, (102), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:56,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:32:56,430 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions.
[2022-01-31 17:32:56,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states.
[2022-01-31 17:32:56,431 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.0515463917525774) internal successors, (102), 96 states have internal predecessors, (102), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106
[2022-01-31 17:32:56,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:32:56,431 INFO L225 Difference]: With dead ends: 123
[2022-01-31 17:32:56,432 INFO L226 Difference]: Without dead ends: 112
[2022-01-31 17:32:56,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4464 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=13680, Invalid=22610, Unknown=0, NotChecked=0, Total=36290
[2022-01-31 17:32:56,434 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:32:56,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 64 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:32:56,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states.
[2022-01-31 17:32:56,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112.
[2022-01-31 17:32:56,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 106 states have internal predecessors, (108), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:32:56,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions.
[2022-01-31 17:32:56,437 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 106
[2022-01-31 17:32:56,437 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:32:56,437 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions.
[2022-01-31 17:32:56,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.0515463917525774) internal successors, (102), 96 states have internal predecessors, (102), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:32:56,437 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions.
[2022-01-31 17:32:56,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108
[2022-01-31 17:32:56,437 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:32:56,437 INFO L514 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:32:56,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94
[2022-01-31 17:32:56,437 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:32:56,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:32:56,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1385087839, now seen corresponding path program 94 times
[2022-01-31 17:32:56,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:32:56,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024679363]
[2022-01-31 17:32:56,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:32:56,441 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:32:56,442 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:32:56,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:32:56,446 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:32:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:58,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:32:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:32:58,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:32:58,178 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:32:58,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024679363]
[2022-01-31 17:32:58,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2024679363] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:32:58,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:32:58,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98
[2022-01-31 17:32:58,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8227409]
[2022-01-31 17:32:58,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:32:58,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states
[2022-01-31 17:32:58,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:32:58,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants.
[2022-01-31 17:32:58,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506
[2022-01-31 17:32:58,180 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 98 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 97 states have internal predecessors, (103), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:00,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:00,944 INFO L93 Difference]: Finished difference Result 124 states and 126 transitions.
[2022-01-31 17:33:00,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states.
[2022-01-31 17:33:00,944 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 97 states have internal predecessors, (103), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 107
[2022-01-31 17:33:00,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:00,945 INFO L225 Difference]: With dead ends: 124
[2022-01-31 17:33:00,945 INFO L226 Difference]: Without dead ends: 113
[2022-01-31 17:33:00,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4559 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=13968, Invalid=23088, Unknown=0, NotChecked=0, Total=37056
[2022-01-31 17:33:00,947 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:00,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 64 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:33:00,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states.
[2022-01-31 17:33:00,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113.
[2022-01-31 17:33:00,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 107 states have internal predecessors, (109), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:00,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions.
[2022-01-31 17:33:00,950 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 107
[2022-01-31 17:33:00,950 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:00,950 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions.
[2022-01-31 17:33:00,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 97 states have internal predecessors, (103), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:00,950 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions.
[2022-01-31 17:33:00,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109
[2022-01-31 17:33:00,950 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:00,950 INFO L514 BasicCegarLoop]: trace histogram [95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:00,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95
[2022-01-31 17:33:00,950 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:00,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:00,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2104071317, now seen corresponding path program 95 times
[2022-01-31 17:33:00,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:00,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706248659]
[2022-01-31 17:33:00,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:00,951 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:00,952 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:00,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:00,969 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:03,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:33:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:03,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:33:03,997 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:33:03,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706248659]
[2022-01-31 17:33:03,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [706248659] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:33:03,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:33:03,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99
[2022-01-31 17:33:03,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105926791]
[2022-01-31 17:33:03,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:33:03,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states
[2022-01-31 17:33:03,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:33:03,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants.
[2022-01-31 17:33:03,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702
[2022-01-31 17:33:04,000 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand has 99 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 98 states have internal predecessors, (104), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:06,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:06,917 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions.
[2022-01-31 17:33:06,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states.
[2022-01-31 17:33:06,917 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 98 states have internal predecessors, (104), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 108
[2022-01-31 17:33:06,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:06,917 INFO L225 Difference]: With dead ends: 125
[2022-01-31 17:33:06,918 INFO L226 Difference]: Without dead ends: 114
[2022-01-31 17:33:06,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4655 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830
[2022-01-31 17:33:06,919 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:06,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:33:06,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states.
[2022-01-31 17:33:06,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114.
[2022-01-31 17:33:06,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 108 states have internal predecessors, (110), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:06,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions.
[2022-01-31 17:33:06,922 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 108
[2022-01-31 17:33:06,922 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:06,922 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions.
[2022-01-31 17:33:06,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 98 states have internal predecessors, (104), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:06,922 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions.
[2022-01-31 17:33:06,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110
[2022-01-31 17:33:06,923 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:06,923 INFO L514 BasicCegarLoop]: trace histogram [96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:06,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96
[2022-01-31 17:33:06,923 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:06,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:06,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1401144543, now seen corresponding path program 96 times
[2022-01-31 17:33:06,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:06,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730239431]
[2022-01-31 17:33:06,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:06,924 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:06,924 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:06,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:06,929 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:08,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:33:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:08,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:33:08,753 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:33:08,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730239431]
[2022-01-31 17:33:08,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [730239431] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:33:08,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:33:08,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100
[2022-01-31 17:33:08,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163368026]
[2022-01-31 17:33:08,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:33:08,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states
[2022-01-31 17:33:08,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:33:08,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants.
[2022-01-31 17:33:08,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900
[2022-01-31 17:33:08,755 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand has 100 states, 100 states have (on average 1.05) internal successors, (105), 99 states have internal predecessors, (105), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:11,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:11,968 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions.
[2022-01-31 17:33:11,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states.
[2022-01-31 17:33:11,968 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.05) internal successors, (105), 99 states have internal predecessors, (105), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109
[2022-01-31 17:33:11,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:11,969 INFO L225 Difference]: With dead ends: 126
[2022-01-31 17:33:11,969 INFO L226 Difference]: Without dead ends: 115
[2022-01-31 17:33:11,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4752 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=14553, Invalid=24059, Unknown=0, NotChecked=0, Total=38612
[2022-01-31 17:33:11,970 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:11,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:33:11,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2022-01-31 17:33:11,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115.
[2022-01-31 17:33:11,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 109 states have (on average 1.018348623853211) internal successors, (111), 109 states have internal predecessors, (111), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:11,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions.
[2022-01-31 17:33:11,973 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 109
[2022-01-31 17:33:11,973 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:11,973 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions.
[2022-01-31 17:33:11,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 1.05) internal successors, (105), 99 states have internal predecessors, (105), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:11,974 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions.
[2022-01-31 17:33:11,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111
[2022-01-31 17:33:11,974 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:11,974 INFO L514 BasicCegarLoop]: trace histogram [97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:11,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97
[2022-01-31 17:33:11,974 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:11,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:11,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1606313493, now seen corresponding path program 97 times
[2022-01-31 17:33:11,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:11,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821385145]
[2022-01-31 17:33:11,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:11,975 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:11,975 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:11,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:11,980 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:15,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:33:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:15,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:33:15,053 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:33:15,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821385145]
[2022-01-31 17:33:15,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1821385145] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:33:15,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:33:15,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101
[2022-01-31 17:33:15,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541311350]
[2022-01-31 17:33:15,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:33:15,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states
[2022-01-31 17:33:15,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:33:15,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants.
[2022-01-31 17:33:15,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100
[2022-01-31 17:33:15,055 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand has 101 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 100 states have internal predecessors, (106), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:18,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:18,237 INFO L93 Difference]: Finished difference Result 127 states and 129 transitions.
[2022-01-31 17:33:18,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states.
[2022-01-31 17:33:18,238 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 100 states have internal predecessors, (106), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 110
[2022-01-31 17:33:18,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:18,238 INFO L225 Difference]: With dead ends: 127
[2022-01-31 17:33:18,238 INFO L226 Difference]: Without dead ends: 116
[2022-01-31 17:33:18,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4850 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=14850, Invalid=24552, Unknown=0, NotChecked=0, Total=39402
[2022-01-31 17:33:18,247 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:18,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:33:18,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states.
[2022-01-31 17:33:18,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116.
[2022-01-31 17:33:18,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 110 states have (on average 1.018181818181818) internal successors, (112), 110 states have internal predecessors, (112), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:18,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions.
[2022-01-31 17:33:18,250 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 110
[2022-01-31 17:33:18,250 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:18,250 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions.
[2022-01-31 17:33:18,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 100 states have internal predecessors, (106), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:18,250 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions.
[2022-01-31 17:33:18,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112
[2022-01-31 17:33:18,251 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:18,251 INFO L514 BasicCegarLoop]: trace histogram [98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:18,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98
[2022-01-31 17:33:18,251 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:18,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:18,251 INFO L85 PathProgramCache]: Analyzing trace with hash -348232097, now seen corresponding path program 98 times
[2022-01-31 17:33:18,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:18,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748998662]
[2022-01-31 17:33:18,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:18,252 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:18,252 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:18,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:18,257 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:20,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:33:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:20,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:33:20,146 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:33:20,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748998662]
[2022-01-31 17:33:20,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [748998662] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:33:20,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:33:20,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102
[2022-01-31 17:33:20,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979228505]
[2022-01-31 17:33:20,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:33:20,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states
[2022-01-31 17:33:20,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:33:20,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants.
[2022-01-31 17:33:20,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302
[2022-01-31 17:33:20,148 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand has 102 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 101 states have internal predecessors, (107), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:22,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:22,876 INFO L93 Difference]: Finished difference Result 128 states and 130 transitions.
[2022-01-31 17:33:22,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states.
[2022-01-31 17:33:22,876 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 101 states have internal predecessors, (107), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111
[2022-01-31 17:33:22,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:22,876 INFO L225 Difference]: With dead ends: 128
[2022-01-31 17:33:22,876 INFO L226 Difference]: Without dead ends: 117
[2022-01-31 17:33:22,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4949 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=15150, Invalid=25050, Unknown=0, NotChecked=0, Total=40200
[2022-01-31 17:33:22,879 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:22,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:33:22,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states.
[2022-01-31 17:33:22,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117.
[2022-01-31 17:33:22,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:22,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions.
[2022-01-31 17:33:22,891 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 111
[2022-01-31 17:33:22,891 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:22,891 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions.
[2022-01-31 17:33:22,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 101 states have internal predecessors, (107), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:22,891 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions.
[2022-01-31 17:33:22,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113
[2022-01-31 17:33:22,891 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:22,891 INFO L514 BasicCegarLoop]: trace histogram [99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:22,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99
[2022-01-31 17:33:22,892 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:22,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:22,892 INFO L85 PathProgramCache]: Analyzing trace with hash -2414485, now seen corresponding path program 99 times
[2022-01-31 17:33:22,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:22,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361611104]
[2022-01-31 17:33:22,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:22,893 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:22,893 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:22,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:22,898 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:24,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:33:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:24,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:33:24,836 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:33:24,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361611104]
[2022-01-31 17:33:24,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1361611104] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:33:24,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:33:24,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103
[2022-01-31 17:33:24,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821082575]
[2022-01-31 17:33:24,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:33:24,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states
[2022-01-31 17:33:24,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:33:24,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants.
[2022-01-31 17:33:24,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506
[2022-01-31 17:33:24,838 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand has 103 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 102 states have internal predecessors, (108), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:28,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:28,020 INFO L93 Difference]: Finished difference Result 129 states and 131 transitions.
[2022-01-31 17:33:28,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states.
[2022-01-31 17:33:28,021 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 102 states have internal predecessors, (108), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 112
[2022-01-31 17:33:28,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:28,021 INFO L225 Difference]: With dead ends: 129
[2022-01-31 17:33:28,021 INFO L226 Difference]: Without dead ends: 118
[2022-01-31 17:33:28,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006
[2022-01-31 17:33:28,023 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:28,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:33:28,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states.
[2022-01-31 17:33:28,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118.
[2022-01-31 17:33:28,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 112 states have internal predecessors, (114), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:28,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions.
[2022-01-31 17:33:28,026 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 112
[2022-01-31 17:33:28,026 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:28,026 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions.
[2022-01-31 17:33:28,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 102 states have internal predecessors, (108), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:28,026 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions.
[2022-01-31 17:33:28,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114
[2022-01-31 17:33:28,026 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:28,026 INFO L514 BasicCegarLoop]: trace histogram [100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:28,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100
[2022-01-31 17:33:28,026 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:28,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:28,027 INFO L85 PathProgramCache]: Analyzing trace with hash 2127996895, now seen corresponding path program 100 times
[2022-01-31 17:33:28,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:28,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617943169]
[2022-01-31 17:33:28,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:28,027 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:28,027 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:28,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:28,033 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:29,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:33:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:29,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:33:29,988 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:33:29,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617943169]
[2022-01-31 17:33:29,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [617943169] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:33:29,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:33:29,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104
[2022-01-31 17:33:29,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558499864]
[2022-01-31 17:33:29,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:33:29,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states
[2022-01-31 17:33:29,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:33:29,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants.
[2022-01-31 17:33:29,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712
[2022-01-31 17:33:29,990 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand has 104 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 103 states have internal predecessors, (109), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:32,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:32,367 INFO L93 Difference]: Finished difference Result 130 states and 132 transitions.
[2022-01-31 17:33:32,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states.
[2022-01-31 17:33:32,368 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 103 states have internal predecessors, (109), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113
[2022-01-31 17:33:32,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:32,368 INFO L225 Difference]: With dead ends: 130
[2022-01-31 17:33:32,368 INFO L226 Difference]: Without dead ends: 119
[2022-01-31 17:33:32,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5150 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=15759, Invalid=26061, Unknown=0, NotChecked=0, Total=41820
[2022-01-31 17:33:32,370 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:32,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:33:32,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states.
[2022-01-31 17:33:32,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119.
[2022-01-31 17:33:32,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 113 states have (on average 1.0176991150442478) internal successors, (115), 113 states have internal predecessors, (115), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:32,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions.
[2022-01-31 17:33:32,375 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 113
[2022-01-31 17:33:32,375 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:32,375 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions.
[2022-01-31 17:33:32,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 103 states have internal predecessors, (109), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:32,375 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions.
[2022-01-31 17:33:32,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115
[2022-01-31 17:33:32,376 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:32,376 INFO L514 BasicCegarLoop]: trace histogram [101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:32,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101
[2022-01-31 17:33:32,376 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:32,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:32,376 INFO L85 PathProgramCache]: Analyzing trace with hash -548727061, now seen corresponding path program 101 times
[2022-01-31 17:33:32,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:32,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170059616]
[2022-01-31 17:33:32,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:32,377 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:32,377 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:32,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:32,382 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:34,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:33:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:34,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:33:34,702 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:33:34,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170059616]
[2022-01-31 17:33:34,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1170059616] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:33:34,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:33:34,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105
[2022-01-31 17:33:34,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503584210]
[2022-01-31 17:33:34,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:33:34,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states
[2022-01-31 17:33:34,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:33:34,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants.
[2022-01-31 17:33:34,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920
[2022-01-31 17:33:34,729 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 105 states, 105 states have (on average 1.0476190476190477) internal successors, (110), 104 states have internal predecessors, (110), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:37,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:37,935 INFO L93 Difference]: Finished difference Result 131 states and 133 transitions.
[2022-01-31 17:33:37,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states.
[2022-01-31 17:33:37,935 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 1.0476190476190477) internal successors, (110), 104 states have internal predecessors, (110), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114
[2022-01-31 17:33:37,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:37,939 INFO L225 Difference]: With dead ends: 131
[2022-01-31 17:33:37,940 INFO L226 Difference]: Without dead ends: 120
[2022-01-31 17:33:37,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5252 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=16068, Invalid=26574, Unknown=0, NotChecked=0, Total=42642
[2022-01-31 17:33:37,942 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:37,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:33:37,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states.
[2022-01-31 17:33:37,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120.
[2022-01-31 17:33:37,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 114 states have internal predecessors, (116), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:37,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions.
[2022-01-31 17:33:37,967 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 114
[2022-01-31 17:33:37,967 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:37,967 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions.
[2022-01-31 17:33:37,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 1.0476190476190477) internal successors, (110), 104 states have internal predecessors, (110), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:37,967 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions.
[2022-01-31 17:33:37,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116
[2022-01-31 17:33:37,968 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:37,968 INFO L514 BasicCegarLoop]: trace histogram [102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:37,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102
[2022-01-31 17:33:37,968 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:37,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:37,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1922791073, now seen corresponding path program 102 times
[2022-01-31 17:33:37,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:37,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186294737]
[2022-01-31 17:33:37,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:37,969 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:37,969 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:37,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:37,990 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:40,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:33:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:40,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:33:40,034 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:33:40,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186294737]
[2022-01-31 17:33:40,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1186294737] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:33:40,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:33:40,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106
[2022-01-31 17:33:40,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83575772]
[2022-01-31 17:33:40,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:33:40,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states
[2022-01-31 17:33:40,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:33:40,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants.
[2022-01-31 17:33:40,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130
[2022-01-31 17:33:40,037 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 106 states, 106 states have (on average 1.0471698113207548) internal successors, (111), 105 states have internal predecessors, (111), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:42,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:42,995 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions.
[2022-01-31 17:33:42,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states.
[2022-01-31 17:33:42,995 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 1.0471698113207548) internal successors, (111), 105 states have internal predecessors, (111), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115
[2022-01-31 17:33:42,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:42,999 INFO L225 Difference]: With dead ends: 132
[2022-01-31 17:33:42,999 INFO L226 Difference]: Without dead ends: 121
[2022-01-31 17:33:43,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5355 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=16380, Invalid=27092, Unknown=0, NotChecked=0, Total=43472
[2022-01-31 17:33:43,002 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:43,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:33:43,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states.
[2022-01-31 17:33:43,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121.
[2022-01-31 17:33:43,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 115 states have (on average 1.017391304347826) internal successors, (117), 115 states have internal predecessors, (117), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:43,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions.
[2022-01-31 17:33:43,006 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 115
[2022-01-31 17:33:43,006 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:43,006 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions.
[2022-01-31 17:33:43,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 1.0471698113207548) internal successors, (111), 105 states have internal predecessors, (111), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:43,006 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions.
[2022-01-31 17:33:43,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117
[2022-01-31 17:33:43,007 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:43,007 INFO L514 BasicCegarLoop]: trace histogram [103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:43,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103
[2022-01-31 17:33:43,007 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:43,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:43,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1569102485, now seen corresponding path program 103 times
[2022-01-31 17:33:43,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:43,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777156940]
[2022-01-31 17:33:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:43,008 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:43,008 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:43,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:43,015 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:45,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:33:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:45,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:33:45,384 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:33:45,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777156940]
[2022-01-31 17:33:45,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1777156940] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:33:45,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:33:45,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107
[2022-01-31 17:33:45,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541846011]
[2022-01-31 17:33:45,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:33:45,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states
[2022-01-31 17:33:45,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:33:45,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants.
[2022-01-31 17:33:45,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342
[2022-01-31 17:33:45,387 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand has 107 states, 107 states have (on average 1.0467289719626167) internal successors, (112), 106 states have internal predecessors, (112), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:47,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:47,886 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions.
[2022-01-31 17:33:47,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states.
[2022-01-31 17:33:47,886 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.0467289719626167) internal successors, (112), 106 states have internal predecessors, (112), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 116
[2022-01-31 17:33:47,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:47,887 INFO L225 Difference]: With dead ends: 133
[2022-01-31 17:33:47,887 INFO L226 Difference]: Without dead ends: 122
[2022-01-31 17:33:47,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5459 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310
[2022-01-31 17:33:47,889 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:47,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:33:47,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states.
[2022-01-31 17:33:47,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122.
[2022-01-31 17:33:47,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 116 states have (on average 1.0172413793103448) internal successors, (118), 116 states have internal predecessors, (118), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:47,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions.
[2022-01-31 17:33:47,893 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 116
[2022-01-31 17:33:47,893 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:47,893 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions.
[2022-01-31 17:33:47,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.0467289719626167) internal successors, (112), 106 states have internal predecessors, (112), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:47,894 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions.
[2022-01-31 17:33:47,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118
[2022-01-31 17:33:47,895 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:47,895 INFO L514 BasicCegarLoop]: trace histogram [104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:47,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104
[2022-01-31 17:33:47,895 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:47,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:47,896 INFO L85 PathProgramCache]: Analyzing trace with hash 805309151, now seen corresponding path program 104 times
[2022-01-31 17:33:47,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:47,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031811692]
[2022-01-31 17:33:47,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:47,898 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:47,898 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:47,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:47,903 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:50,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:33:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:33:50,031 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:33:50,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031811692]
[2022-01-31 17:33:50,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1031811692] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:33:50,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:33:50,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108
[2022-01-31 17:33:50,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527174171]
[2022-01-31 17:33:50,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:33:50,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states
[2022-01-31 17:33:50,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:33:50,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants.
[2022-01-31 17:33:50,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556
[2022-01-31 17:33:50,033 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand has 108 states, 108 states have (on average 1.0462962962962963) internal successors, (113), 107 states have internal predecessors, (113), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:53,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:53,309 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions.
[2022-01-31 17:33:53,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states.
[2022-01-31 17:33:53,309 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 1.0462962962962963) internal successors, (113), 107 states have internal predecessors, (113), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117
[2022-01-31 17:33:53,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:53,309 INFO L225 Difference]: With dead ends: 134
[2022-01-31 17:33:53,309 INFO L226 Difference]: Without dead ends: 123
[2022-01-31 17:33:53,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5564 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=17013, Invalid=28143, Unknown=0, NotChecked=0, Total=45156
[2022-01-31 17:33:53,312 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:53,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 69 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:33:53,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2022-01-31 17:33:53,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123.
[2022-01-31 17:33:53,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 117 states have (on average 1.017094017094017) internal successors, (119), 117 states have internal predecessors, (119), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:53,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions.
[2022-01-31 17:33:53,315 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 117
[2022-01-31 17:33:53,316 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:53,316 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions.
[2022-01-31 17:33:53,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 1.0462962962962963) internal successors, (113), 107 states have internal predecessors, (113), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:53,316 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions.
[2022-01-31 17:33:53,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119
[2022-01-31 17:33:53,316 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:53,316 INFO L514 BasicCegarLoop]: trace histogram [105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:53,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105
[2022-01-31 17:33:53,317 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:53,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:53,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1397625835, now seen corresponding path program 105 times
[2022-01-31 17:33:53,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:53,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039600363]
[2022-01-31 17:33:53,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:53,318 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:53,318 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:53,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:53,324 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:55,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:33:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:33:55,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:33:55,462 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:33:55,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039600363]
[2022-01-31 17:33:55,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2039600363] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:33:55,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:33:55,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [] total 109
[2022-01-31 17:33:55,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68414187]
[2022-01-31 17:33:55,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:33:55,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states
[2022-01-31 17:33:55,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:33:55,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants.
[2022-01-31 17:33:55,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772
[2022-01-31 17:33:55,464 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand has 109 states, 109 states have (on average 1.0458715596330275) internal successors, (114), 108 states have internal predecessors, (114), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:58,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:33:58,846 INFO L93 Difference]: Finished difference Result 135 states and 137 transitions.
[2022-01-31 17:33:58,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states.
[2022-01-31 17:33:58,846 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 1.0458715596330275) internal successors, (114), 108 states have internal predecessors, (114), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 118
[2022-01-31 17:33:58,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:33:58,847 INFO L225 Difference]: With dead ends: 135
[2022-01-31 17:33:58,847 INFO L226 Difference]: Without dead ends: 124
[2022-01-31 17:33:58,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5670 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=17334, Invalid=28676, Unknown=0, NotChecked=0, Total=46010
[2022-01-31 17:33:58,850 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:33:58,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:33:58,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states.
[2022-01-31 17:33:58,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124.
[2022-01-31 17:33:58,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 118 states have internal predecessors, (120), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:33:58,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions.
[2022-01-31 17:33:58,852 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 118
[2022-01-31 17:33:58,852 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:33:58,853 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions.
[2022-01-31 17:33:58,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 1.0458715596330275) internal successors, (114), 108 states have internal predecessors, (114), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:33:58,853 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions.
[2022-01-31 17:33:58,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120
[2022-01-31 17:33:58,853 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:33:58,853 INFO L514 BasicCegarLoop]: trace histogram [106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:33:58,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106
[2022-01-31 17:33:58,853 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:33:58,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:33:58,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1715393441, now seen corresponding path program 106 times
[2022-01-31 17:33:58,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:33:58,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169440739]
[2022-01-31 17:33:58,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:33:58,854 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:33:58,854 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:33:58,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:33:58,860 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:33:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:01,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:34:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:01,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:34:01,986 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:34:01,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169440739]
[2022-01-31 17:34:01,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [169440739] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:34:01,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:34:01,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [110] imperfect sequences [] total 110
[2022-01-31 17:34:01,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895181709]
[2022-01-31 17:34:01,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:34:01,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states
[2022-01-31 17:34:01,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:34:01,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants.
[2022-01-31 17:34:01,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990
[2022-01-31 17:34:01,988 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand has 110 states, 110 states have (on average 1.0454545454545454) internal successors, (115), 109 states have internal predecessors, (115), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:05,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:34:05,449 INFO L93 Difference]: Finished difference Result 136 states and 138 transitions.
[2022-01-31 17:34:05,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states.
[2022-01-31 17:34:05,450 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 1.0454545454545454) internal successors, (115), 109 states have internal predecessors, (115), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119
[2022-01-31 17:34:05,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:34:05,450 INFO L225 Difference]: With dead ends: 136
[2022-01-31 17:34:05,450 INFO L226 Difference]: Without dead ends: 125
[2022-01-31 17:34:05,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5777 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=17658, Invalid=29214, Unknown=0, NotChecked=0, Total=46872
[2022-01-31 17:34:05,453 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:34:05,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:34:05,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states.
[2022-01-31 17:34:05,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125.
[2022-01-31 17:34:05,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 119 states have internal predecessors, (121), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:34:05,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions.
[2022-01-31 17:34:05,456 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 119
[2022-01-31 17:34:05,456 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:34:05,456 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions.
[2022-01-31 17:34:05,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 1.0454545454545454) internal successors, (115), 109 states have internal predecessors, (115), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:05,456 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions.
[2022-01-31 17:34:05,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121
[2022-01-31 17:34:05,456 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:34:05,456 INFO L514 BasicCegarLoop]: trace histogram [107, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:34:05,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107
[2022-01-31 17:34:05,456 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:34:05,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:34:05,456 INFO L85 PathProgramCache]: Analyzing trace with hash 565256811, now seen corresponding path program 107 times
[2022-01-31 17:34:05,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:34:05,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253770936]
[2022-01-31 17:34:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:34:05,459 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:34:05,459 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:34:05,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:34:05,465 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:34:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:07,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:34:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:07,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:34:07,706 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:34:07,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253770936]
[2022-01-31 17:34:07,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [253770936] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:34:07,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:34:07,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111
[2022-01-31 17:34:07,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492257526]
[2022-01-31 17:34:07,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:34:07,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states
[2022-01-31 17:34:07,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:34:07,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants.
[2022-01-31 17:34:07,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210
[2022-01-31 17:34:07,708 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand has 111 states, 111 states have (on average 1.045045045045045) internal successors, (116), 110 states have internal predecessors, (116), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:10,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:34:10,640 INFO L93 Difference]: Finished difference Result 137 states and 139 transitions.
[2022-01-31 17:34:10,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states.
[2022-01-31 17:34:10,640 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 1.045045045045045) internal successors, (116), 110 states have internal predecessors, (116), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 120
[2022-01-31 17:34:10,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:34:10,641 INFO L225 Difference]: With dead ends: 137
[2022-01-31 17:34:10,641 INFO L226 Difference]: Without dead ends: 126
[2022-01-31 17:34:10,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5885 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=17985, Invalid=29757, Unknown=0, NotChecked=0, Total=47742
[2022-01-31 17:34:10,644 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:34:10,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:34:10,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states.
[2022-01-31 17:34:10,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126.
[2022-01-31 17:34:10,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 120 states have internal predecessors, (122), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:34:10,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions.
[2022-01-31 17:34:10,648 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 120
[2022-01-31 17:34:10,648 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:34:10,648 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions.
[2022-01-31 17:34:10,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 1.045045045045045) internal successors, (116), 110 states have internal predecessors, (116), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:10,648 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions.
[2022-01-31 17:34:10,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122
[2022-01-31 17:34:10,649 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:34:10,649 INFO L514 BasicCegarLoop]: trace histogram [108, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:34:10,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108
[2022-01-31 17:34:10,649 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:34:10,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:34:10,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1749029409, now seen corresponding path program 108 times
[2022-01-31 17:34:10,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:34:10,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807198980]
[2022-01-31 17:34:10,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:34:10,664 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:34:10,668 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:34:10,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:34:10,676 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:34:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:13,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:34:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:13,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:34:13,672 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:34:13,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807198980]
[2022-01-31 17:34:13,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [807198980] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:34:13,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:34:13,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [112] imperfect sequences [] total 112
[2022-01-31 17:34:13,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388391068]
[2022-01-31 17:34:13,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:34:13,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states
[2022-01-31 17:34:13,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:34:13,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants.
[2022-01-31 17:34:13,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432
[2022-01-31 17:34:13,675 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand has 112 states, 112 states have (on average 1.0446428571428572) internal successors, (117), 111 states have internal predecessors, (117), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:16,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:34:16,560 INFO L93 Difference]: Finished difference Result 138 states and 140 transitions.
[2022-01-31 17:34:16,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states.
[2022-01-31 17:34:16,560 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 1.0446428571428572) internal successors, (117), 111 states have internal predecessors, (117), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121
[2022-01-31 17:34:16,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:34:16,561 INFO L225 Difference]: With dead ends: 138
[2022-01-31 17:34:16,561 INFO L226 Difference]: Without dead ends: 127
[2022-01-31 17:34:16,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5994 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=18315, Invalid=30305, Unknown=0, NotChecked=0, Total=48620
[2022-01-31 17:34:16,563 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:34:16,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 64 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:34:16,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states.
[2022-01-31 17:34:16,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127.
[2022-01-31 17:34:16,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 121 states have (on average 1.0165289256198347) internal successors, (123), 121 states have internal predecessors, (123), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:34:16,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions.
[2022-01-31 17:34:16,566 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 121
[2022-01-31 17:34:16,566 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:34:16,566 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions.
[2022-01-31 17:34:16,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 1.0446428571428572) internal successors, (117), 111 states have internal predecessors, (117), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:16,566 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions.
[2022-01-31 17:34:16,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123
[2022-01-31 17:34:16,567 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:34:16,567 INFO L514 BasicCegarLoop]: trace histogram [109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:34:16,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109
[2022-01-31 17:34:16,567 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:34:16,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:34:16,567 INFO L85 PathProgramCache]: Analyzing trace with hash -477458197, now seen corresponding path program 109 times
[2022-01-31 17:34:16,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:34:16,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242875172]
[2022-01-31 17:34:16,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:34:16,568 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:34:16,568 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:34:16,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:34:16,574 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:34:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:20,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:34:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:20,095 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 17:34:20,096 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:34:20,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242875172]
[2022-01-31 17:34:20,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1242875172] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:34:20,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:34:20,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [113] imperfect sequences [] total 113
[2022-01-31 17:34:20,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066734249]
[2022-01-31 17:34:20,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:34:20,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states
[2022-01-31 17:34:20,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:34:20,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants.
[2022-01-31 17:34:20,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656
[2022-01-31 17:34:20,097 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 113 states, 113 states have (on average 1.0442477876106195) internal successors, (118), 112 states have internal predecessors, (118), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:23,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:34:23,388 INFO L93 Difference]: Finished difference Result 139 states and 141 transitions.
[2022-01-31 17:34:23,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states.
[2022-01-31 17:34:23,388 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 1.0442477876106195) internal successors, (118), 112 states have internal predecessors, (118), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122
[2022-01-31 17:34:23,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:34:23,389 INFO L225 Difference]: With dead ends: 139
[2022-01-31 17:34:23,389 INFO L226 Difference]: Without dead ends: 128
[2022-01-31 17:34:23,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6104 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=18648, Invalid=30858, Unknown=0, NotChecked=0, Total=49506
[2022-01-31 17:34:23,391 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:34:23,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:34:23,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states.
[2022-01-31 17:34:23,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128.
[2022-01-31 17:34:23,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:34:23,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions.
[2022-01-31 17:34:23,394 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 122
[2022-01-31 17:34:23,395 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:34:23,395 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions.
[2022-01-31 17:34:23,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 1.0442477876106195) internal successors, (118), 112 states have internal predecessors, (118), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:23,395 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions.
[2022-01-31 17:34:23,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124
[2022-01-31 17:34:23,395 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:34:23,395 INFO L514 BasicCegarLoop]: trace histogram [110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:34:23,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110
[2022-01-31 17:34:23,395 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:34:23,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:34:23,395 INFO L85 PathProgramCache]: Analyzing trace with hash 286543711, now seen corresponding path program 110 times
[2022-01-31 17:34:23,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:34:23,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592549042]
[2022-01-31 17:34:23,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:34:23,402 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:34:23,402 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:34:23,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:34:23,409 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:34:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:25,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:34:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:25,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:34:25,974 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:34:25,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592549042]
[2022-01-31 17:34:25,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [592549042] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:34:25,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:34:25,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [114] imperfect sequences [] total 114
[2022-01-31 17:34:25,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011142699]
[2022-01-31 17:34:25,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:34:25,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states
[2022-01-31 17:34:25,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:34:25,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants.
[2022-01-31 17:34:25,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882
[2022-01-31 17:34:25,975 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 114 states, 114 states have (on average 1.043859649122807) internal successors, (119), 113 states have internal predecessors, (119), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:30,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:34:30,082 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions.
[2022-01-31 17:34:30,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states.
[2022-01-31 17:34:30,083 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 1.043859649122807) internal successors, (119), 113 states have internal predecessors, (119), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123
[2022-01-31 17:34:30,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:34:30,083 INFO L225 Difference]: With dead ends: 140
[2022-01-31 17:34:30,083 INFO L226 Difference]: Without dead ends: 129
[2022-01-31 17:34:30,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6215 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=18984, Invalid=31416, Unknown=0, NotChecked=0, Total=50400
[2022-01-31 17:34:30,087 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:34:30,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:34:30,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states.
[2022-01-31 17:34:30,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129.
[2022-01-31 17:34:30,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 123 states have (on average 1.016260162601626) internal successors, (125), 123 states have internal predecessors, (125), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:34:30,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions.
[2022-01-31 17:34:30,105 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 123
[2022-01-31 17:34:30,106 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:34:30,106 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions.
[2022-01-31 17:34:30,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 1.043859649122807) internal successors, (119), 113 states have internal predecessors, (119), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:30,106 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions.
[2022-01-31 17:34:30,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125
[2022-01-31 17:34:30,106 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:34:30,106 INFO L514 BasicCegarLoop]: trace histogram [111, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:34:30,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111
[2022-01-31 17:34:30,106 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:34:30,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:34:30,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1799200917, now seen corresponding path program 111 times
[2022-01-31 17:34:30,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:34:30,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153167727]
[2022-01-31 17:34:30,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:34:30,107 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:34:30,107 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:34:30,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:34:30,114 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:34:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:32,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:34:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:32,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:34:32,635 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:34:32,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153167727]
[2022-01-31 17:34:32,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [153167727] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:34:32,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:34:32,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [115] imperfect sequences [] total 115
[2022-01-31 17:34:32,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657323212]
[2022-01-31 17:34:32,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:34:32,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states
[2022-01-31 17:34:32,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:34:32,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants.
[2022-01-31 17:34:32,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110
[2022-01-31 17:34:32,637 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand has 115 states, 115 states have (on average 1.0434782608695652) internal successors, (120), 114 states have internal predecessors, (120), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:35,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:34:35,484 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions.
[2022-01-31 17:34:35,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states.
[2022-01-31 17:34:35,484 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 1.0434782608695652) internal successors, (120), 114 states have internal predecessors, (120), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 124
[2022-01-31 17:34:35,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:34:35,492 INFO L225 Difference]: With dead ends: 141
[2022-01-31 17:34:35,492 INFO L226 Difference]: Without dead ends: 130
[2022-01-31 17:34:35,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6327 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302
[2022-01-31 17:34:35,494 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:34:35,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:34:35,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states.
[2022-01-31 17:34:35,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130.
[2022-01-31 17:34:35,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 124 states have internal predecessors, (126), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:34:35,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 131 transitions.
[2022-01-31 17:34:35,497 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 131 transitions. Word has length 124
[2022-01-31 17:34:35,497 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:34:35,497 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 131 transitions.
[2022-01-31 17:34:35,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 1.0434782608695652) internal successors, (120), 114 states have internal predecessors, (120), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:35,497 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 131 transitions.
[2022-01-31 17:34:35,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126
[2022-01-31 17:34:35,498 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:34:35,498 INFO L514 BasicCegarLoop]: trace histogram [112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:34:35,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112
[2022-01-31 17:34:35,498 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:34:35,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:34:35,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2032774945, now seen corresponding path program 112 times
[2022-01-31 17:34:35,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:34:35,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516812853]
[2022-01-31 17:34:35,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:34:35,499 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:34:35,499 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:34:35,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:34:35,505 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:34:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:37,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:34:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:37,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:34:37,919 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:34:37,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516812853]
[2022-01-31 17:34:37,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [516812853] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:34:37,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:34:37,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [116] imperfect sequences [] total 116
[2022-01-31 17:34:37,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093437805]
[2022-01-31 17:34:37,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:34:37,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states
[2022-01-31 17:34:37,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:34:37,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants.
[2022-01-31 17:34:37,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6557, Invalid=6783, Unknown=0, NotChecked=0, Total=13340
[2022-01-31 17:34:37,921 INFO L87 Difference]: Start difference. First operand 130 states and 131 transitions. Second operand has 116 states, 116 states have (on average 1.043103448275862) internal successors, (121), 115 states have internal predecessors, (121), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:40,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:34:40,893 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions.
[2022-01-31 17:34:40,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states.
[2022-01-31 17:34:40,893 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 1.043103448275862) internal successors, (121), 115 states have internal predecessors, (121), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125
[2022-01-31 17:34:40,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:34:40,908 INFO L225 Difference]: With dead ends: 142
[2022-01-31 17:34:40,908 INFO L226 Difference]: Without dead ends: 131
[2022-01-31 17:34:40,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6440 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=19665, Invalid=32547, Unknown=0, NotChecked=0, Total=52212
[2022-01-31 17:34:40,910 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:34:40,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 29 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:34:40,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2022-01-31 17:34:40,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131.
[2022-01-31 17:34:40,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 125 states have (on average 1.016) internal successors, (127), 125 states have internal predecessors, (127), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:34:40,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions.
[2022-01-31 17:34:40,913 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 125
[2022-01-31 17:34:40,913 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:34:40,913 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions.
[2022-01-31 17:34:40,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 1.043103448275862) internal successors, (121), 115 states have internal predecessors, (121), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:40,913 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions.
[2022-01-31 17:34:40,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127
[2022-01-31 17:34:40,913 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:34:40,913 INFO L514 BasicCegarLoop]: trace histogram [113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:34:40,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113
[2022-01-31 17:34:40,914 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:34:40,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:34:40,914 INFO L85 PathProgramCache]: Analyzing trace with hash -683635221, now seen corresponding path program 113 times
[2022-01-31 17:34:40,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:34:40,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779862027]
[2022-01-31 17:34:40,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:34:40,914 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:34:40,915 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:34:40,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:34:40,922 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:34:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:43,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:34:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:43,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:34:43,644 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:34:43,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779862027]
[2022-01-31 17:34:43,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1779862027] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:34:43,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:34:43,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [117] imperfect sequences [] total 117
[2022-01-31 17:34:43,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453265997]
[2022-01-31 17:34:43,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:34:43,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states
[2022-01-31 17:34:43,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:34:43,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants.
[2022-01-31 17:34:43,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572
[2022-01-31 17:34:43,647 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand has 117 states, 117 states have (on average 1.0427350427350428) internal successors, (122), 116 states have internal predecessors, (122), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:47,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:34:47,374 INFO L93 Difference]: Finished difference Result 143 states and 145 transitions.
[2022-01-31 17:34:47,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states.
[2022-01-31 17:34:47,374 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 1.0427350427350428) internal successors, (122), 116 states have internal predecessors, (122), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126
[2022-01-31 17:34:47,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:34:47,374 INFO L225 Difference]: With dead ends: 143
[2022-01-31 17:34:47,374 INFO L226 Difference]: Without dead ends: 132
[2022-01-31 17:34:47,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6554 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=20010, Invalid=33120, Unknown=0, NotChecked=0, Total=53130
[2022-01-31 17:34:47,377 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:34:47,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:34:47,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states.
[2022-01-31 17:34:47,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132.
[2022-01-31 17:34:47,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 126 states have (on average 1.0158730158730158) internal successors, (128), 126 states have internal predecessors, (128), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:34:47,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions.
[2022-01-31 17:34:47,381 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 126
[2022-01-31 17:34:47,381 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:34:47,381 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 133 transitions.
[2022-01-31 17:34:47,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 1.0427350427350428) internal successors, (122), 116 states have internal predecessors, (122), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:47,382 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 133 transitions.
[2022-01-31 17:34:47,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128
[2022-01-31 17:34:47,395 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:34:47,395 INFO L514 BasicCegarLoop]: trace histogram [114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:34:47,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114
[2022-01-31 17:34:47,395 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:34:47,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:34:47,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1809976737, now seen corresponding path program 114 times
[2022-01-31 17:34:47,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:34:47,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770580489]
[2022-01-31 17:34:47,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:34:47,411 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:34:47,411 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:34:47,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:34:47,418 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:34:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:49,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:34:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:49,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:34:49,910 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:34:49,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770580489]
[2022-01-31 17:34:49,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [770580489] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:34:49,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:34:49,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [118] imperfect sequences [] total 118
[2022-01-31 17:34:49,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951012042]
[2022-01-31 17:34:49,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:34:49,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states
[2022-01-31 17:34:49,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:34:49,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants.
[2022-01-31 17:34:49,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806
[2022-01-31 17:34:49,913 INFO L87 Difference]: Start difference. First operand 132 states and 133 transitions. Second operand has 118 states, 118 states have (on average 1.0423728813559323) internal successors, (123), 117 states have internal predecessors, (123), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:52,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:34:52,991 INFO L93 Difference]: Finished difference Result 144 states and 146 transitions.
[2022-01-31 17:34:52,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states.
[2022-01-31 17:34:52,991 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 1.0423728813559323) internal successors, (123), 117 states have internal predecessors, (123), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127
[2022-01-31 17:34:52,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:34:52,991 INFO L225 Difference]: With dead ends: 144
[2022-01-31 17:34:52,992 INFO L226 Difference]: Without dead ends: 133
[2022-01-31 17:34:52,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6669 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=20358, Invalid=33698, Unknown=0, NotChecked=0, Total=54056
[2022-01-31 17:34:52,994 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:34:52,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:34:52,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states.
[2022-01-31 17:34:52,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133.
[2022-01-31 17:34:52,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 127 states have (on average 1.015748031496063) internal successors, (129), 127 states have internal predecessors, (129), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:34:52,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions.
[2022-01-31 17:34:52,997 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 127
[2022-01-31 17:34:52,997 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:34:52,997 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions.
[2022-01-31 17:34:52,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 1.0423728813559323) internal successors, (123), 117 states have internal predecessors, (123), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:52,998 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions.
[2022-01-31 17:34:52,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129
[2022-01-31 17:34:52,998 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:34:52,998 INFO L514 BasicCegarLoop]: trace histogram [115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:34:52,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115
[2022-01-31 17:34:52,998 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:34:52,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:34:52,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1928141931, now seen corresponding path program 115 times
[2022-01-31 17:34:52,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:34:52,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879567673]
[2022-01-31 17:34:52,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:34:53,002 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:34:53,003 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:34:53,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:34:53,010 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:34:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:55,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:34:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:34:55,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:34:55,604 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:34:55,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879567673]
[2022-01-31 17:34:55,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1879567673] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:34:55,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:34:55,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [119] imperfect sequences [] total 119
[2022-01-31 17:34:55,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759515751]
[2022-01-31 17:34:55,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:34:55,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states
[2022-01-31 17:34:55,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:34:55,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants.
[2022-01-31 17:34:55,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042
[2022-01-31 17:34:55,606 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand has 119 states, 119 states have (on average 1.0420168067226891) internal successors, (124), 118 states have internal predecessors, (124), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:58,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:34:58,749 INFO L93 Difference]: Finished difference Result 145 states and 147 transitions.
[2022-01-31 17:34:58,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states.
[2022-01-31 17:34:58,750 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 1.0420168067226891) internal successors, (124), 118 states have internal predecessors, (124), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128
[2022-01-31 17:34:58,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:34:58,750 INFO L225 Difference]: With dead ends: 145
[2022-01-31 17:34:58,750 INFO L226 Difference]: Without dead ends: 134
[2022-01-31 17:34:58,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6785 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=20709, Invalid=34281, Unknown=0, NotChecked=0, Total=54990
[2022-01-31 17:34:58,752 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:34:58,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:34:58,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states.
[2022-01-31 17:34:58,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134.
[2022-01-31 17:34:58,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 128 states have (on average 1.015625) internal successors, (130), 128 states have internal predecessors, (130), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:34:58,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions.
[2022-01-31 17:34:58,755 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 128
[2022-01-31 17:34:58,755 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:34:58,755 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions.
[2022-01-31 17:34:58,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 1.0420168067226891) internal successors, (124), 118 states have internal predecessors, (124), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:34:58,755 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions.
[2022-01-31 17:34:58,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2022-01-31 17:34:58,755 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:34:58,756 INFO L514 BasicCegarLoop]: trace histogram [116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:34:58,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116
[2022-01-31 17:34:58,756 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:34:58,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:34:58,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1845703647, now seen corresponding path program 116 times
[2022-01-31 17:34:58,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:34:58,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845749936]
[2022-01-31 17:34:58,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:34:58,757 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:34:58,757 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:34:58,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:34:58,764 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:34:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:35:02,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:35:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:35:02,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:35:02,992 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:35:02,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845749936]
[2022-01-31 17:35:02,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1845749936] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:35:02,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:35:02,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [120] imperfect sequences [] total 120
[2022-01-31 17:35:02,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028760464]
[2022-01-31 17:35:02,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:35:02,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states
[2022-01-31 17:35:02,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:35:02,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants.
[2022-01-31 17:35:02,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7023, Invalid=7257, Unknown=0, NotChecked=0, Total=14280
[2022-01-31 17:35:02,995 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand has 120 states, 120 states have (on average 1.0416666666666667) internal successors, (125), 119 states have internal predecessors, (125), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:35:06,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:35:06,838 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions.
[2022-01-31 17:35:06,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states.
[2022-01-31 17:35:06,839 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 1.0416666666666667) internal successors, (125), 119 states have internal predecessors, (125), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 129
[2022-01-31 17:35:06,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:35:06,839 INFO L225 Difference]: With dead ends: 146
[2022-01-31 17:35:06,839 INFO L226 Difference]: Without dead ends: 135
[2022-01-31 17:35:06,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6902 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=21063, Invalid=34869, Unknown=0, NotChecked=0, Total=55932
[2022-01-31 17:35:06,842 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:35:06,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:35:06,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2022-01-31 17:35:06,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135.
[2022-01-31 17:35:06,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 129 states have internal predecessors, (131), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:35:06,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions.
[2022-01-31 17:35:06,845 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 129
[2022-01-31 17:35:06,845 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:35:06,845 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions.
[2022-01-31 17:35:06,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 1.0416666666666667) internal successors, (125), 119 states have internal predecessors, (125), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:35:06,845 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions.
[2022-01-31 17:35:06,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131
[2022-01-31 17:35:06,845 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:35:06,845 INFO L514 BasicCegarLoop]: trace histogram [117, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:35:06,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117
[2022-01-31 17:35:06,845 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:35:06,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:35:06,846 INFO L85 PathProgramCache]: Analyzing trace with hash -709883157, now seen corresponding path program 117 times
[2022-01-31 17:35:06,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:35:06,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808852716]
[2022-01-31 17:35:06,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:35:06,846 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:35:06,846 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:35:06,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:35:06,853 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:35:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:35:10,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:35:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:35:10,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:35:10,100 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:35:10,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808852716]
[2022-01-31 17:35:10,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1808852716] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:35:10,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:35:10,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [121] imperfect sequences [] total 121
[2022-01-31 17:35:10,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455472564]
[2022-01-31 17:35:10,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:35:10,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states
[2022-01-31 17:35:10,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:35:10,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants.
[2022-01-31 17:35:10,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7142, Invalid=7378, Unknown=0, NotChecked=0, Total=14520
[2022-01-31 17:35:10,108 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 121 states, 121 states have (on average 1.0413223140495869) internal successors, (126), 120 states have internal predecessors, (126), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:35:14,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:35:14,796 INFO L93 Difference]: Finished difference Result 147 states and 149 transitions.
[2022-01-31 17:35:14,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states.
[2022-01-31 17:35:14,796 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 1.0413223140495869) internal successors, (126), 120 states have internal predecessors, (126), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 130
[2022-01-31 17:35:14,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:35:14,796 INFO L225 Difference]: With dead ends: 147
[2022-01-31 17:35:14,796 INFO L226 Difference]: Without dead ends: 136
[2022-01-31 17:35:14,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7020 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=21420, Invalid=35462, Unknown=0, NotChecked=0, Total=56882
[2022-01-31 17:35:14,800 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:35:14,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:35:14,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states.
[2022-01-31 17:35:14,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136.
[2022-01-31 17:35:14,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 130 states have internal predecessors, (132), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:35:14,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions.
[2022-01-31 17:35:14,803 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 130
[2022-01-31 17:35:14,803 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:35:14,803 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions.
[2022-01-31 17:35:14,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 1.0413223140495869) internal successors, (126), 120 states have internal predecessors, (126), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:35:14,803 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions.
[2022-01-31 17:35:14,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132
[2022-01-31 17:35:14,803 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:35:14,803 INFO L514 BasicCegarLoop]: trace histogram [118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:35:14,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118
[2022-01-31 17:35:14,803 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:35:14,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:35:14,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1671304543, now seen corresponding path program 118 times
[2022-01-31 17:35:14,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:35:14,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139872614]
[2022-01-31 17:35:14,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:35:14,804 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:35:14,804 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:35:14,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:35:14,811 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:35:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:35:17,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:35:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:35:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:35:17,728 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:35:17,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139872614]
[2022-01-31 17:35:17,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1139872614] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:35:17,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:35:17,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [122] imperfect sequences [] total 122
[2022-01-31 17:35:17,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382628029]
[2022-01-31 17:35:17,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:35:17,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states
[2022-01-31 17:35:17,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:35:17,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants.
[2022-01-31 17:35:17,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7262, Invalid=7500, Unknown=0, NotChecked=0, Total=14762
[2022-01-31 17:35:17,730 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 122 states, 122 states have (on average 1.040983606557377) internal successors, (127), 121 states have internal predecessors, (127), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:35:21,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:35:21,030 INFO L93 Difference]: Finished difference Result 148 states and 150 transitions.
[2022-01-31 17:35:21,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states.
[2022-01-31 17:35:21,030 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 1.040983606557377) internal successors, (127), 121 states have internal predecessors, (127), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 131
[2022-01-31 17:35:21,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:35:21,031 INFO L225 Difference]: With dead ends: 148
[2022-01-31 17:35:21,031 INFO L226 Difference]: Without dead ends: 137
[2022-01-31 17:35:21,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7139 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=21780, Invalid=36060, Unknown=0, NotChecked=0, Total=57840
[2022-01-31 17:35:21,034 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:35:21,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 24 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:35:21,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states.
[2022-01-31 17:35:21,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137.
[2022-01-31 17:35:21,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 131 states have (on average 1.015267175572519) internal successors, (133), 131 states have internal predecessors, (133), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:35:21,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions.
[2022-01-31 17:35:21,037 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 131
[2022-01-31 17:35:21,037 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:35:21,037 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions.
[2022-01-31 17:35:21,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 1.040983606557377) internal successors, (127), 121 states have internal predecessors, (127), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:35:21,037 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions.
[2022-01-31 17:35:21,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133
[2022-01-31 17:35:21,037 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:35:21,037 INFO L514 BasicCegarLoop]: trace histogram [119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:35:21,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119
[2022-01-31 17:35:21,037 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:35:21,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:35:21,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1821288085, now seen corresponding path program 119 times
[2022-01-31 17:35:21,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:35:21,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457069887]
[2022-01-31 17:35:21,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:35:21,038 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:35:21,038 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:35:21,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:35:21,046 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:35:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:35:24,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:35:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:35:24,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:35:24,604 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:35:24,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457069887]
[2022-01-31 17:35:24,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1457069887] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:35:24,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:35:24,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [123] imperfect sequences [] total 123
[2022-01-31 17:35:24,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160866608]
[2022-01-31 17:35:24,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:35:24,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states
[2022-01-31 17:35:24,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:35:24,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants.
[2022-01-31 17:35:24,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006
[2022-01-31 17:35:24,606 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand has 123 states, 123 states have (on average 1.0406504065040652) internal successors, (128), 122 states have internal predecessors, (128), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:35:27,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:35:27,987 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions.
[2022-01-31 17:35:27,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states.
[2022-01-31 17:35:27,987 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 1.0406504065040652) internal successors, (128), 122 states have internal predecessors, (128), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 132
[2022-01-31 17:35:27,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:35:27,988 INFO L225 Difference]: With dead ends: 149
[2022-01-31 17:35:27,988 INFO L226 Difference]: Without dead ends: 138
[2022-01-31 17:35:27,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7259 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=22143, Invalid=36663, Unknown=0, NotChecked=0, Total=58806
[2022-01-31 17:35:27,990 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:35:27,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:35:27,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states.
[2022-01-31 17:35:27,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138.
[2022-01-31 17:35:27,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 132 states have (on average 1.0151515151515151) internal successors, (134), 132 states have internal predecessors, (134), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:35:27,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions.
[2022-01-31 17:35:27,994 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 132
[2022-01-31 17:35:27,994 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:35:27,994 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions.
[2022-01-31 17:35:27,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 1.0406504065040652) internal successors, (128), 122 states have internal predecessors, (128), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:35:27,994 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions.
[2022-01-31 17:35:27,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134
[2022-01-31 17:35:27,994 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:35:27,994 INFO L514 BasicCegarLoop]: trace histogram [120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:35:27,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120
[2022-01-31 17:35:27,995 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:35:27,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:35:27,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1577490143, now seen corresponding path program 120 times
[2022-01-31 17:35:27,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:35:27,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913348249]
[2022-01-31 17:35:27,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:35:27,996 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:35:27,996 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:35:27,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:35:28,003 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:35:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:35:30,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:35:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:35:30,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:35:30,795 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:35:30,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913348249]
[2022-01-31 17:35:30,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1913348249] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:35:30,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:35:30,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [124] imperfect sequences [] total 124
[2022-01-31 17:35:30,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612237701]
[2022-01-31 17:35:30,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:35:30,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states
[2022-01-31 17:35:30,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:35:30,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants.
[2022-01-31 17:35:30,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7505, Invalid=7747, Unknown=0, NotChecked=0, Total=15252
[2022-01-31 17:35:30,798 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand has 124 states, 124 states have (on average 1.0403225806451613) internal successors, (129), 123 states have internal predecessors, (129), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:35:34,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:35:34,476 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions.
[2022-01-31 17:35:34,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states.
[2022-01-31 17:35:34,477 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 1.0403225806451613) internal successors, (129), 123 states have internal predecessors, (129), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 133
[2022-01-31 17:35:34,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:35:34,477 INFO L225 Difference]: With dead ends: 150
[2022-01-31 17:35:34,477 INFO L226 Difference]: Without dead ends: 139
[2022-01-31 17:35:34,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7380 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=22509, Invalid=37271, Unknown=0, NotChecked=0, Total=59780
[2022-01-31 17:35:34,480 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:35:34,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:35:34,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states.
[2022-01-31 17:35:34,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139.
[2022-01-31 17:35:34,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 133 states have (on average 1.0150375939849625) internal successors, (135), 133 states have internal predecessors, (135), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:35:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions.
[2022-01-31 17:35:34,483 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 133
[2022-01-31 17:35:34,483 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:35:34,483 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions.
[2022-01-31 17:35:34,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 1.0403225806451613) internal successors, (129), 123 states have internal predecessors, (129), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:35:34,483 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions.
[2022-01-31 17:35:34,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135
[2022-01-31 17:35:34,483 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:35:34,483 INFO L514 BasicCegarLoop]: trace histogram [121, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:35:34,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121
[2022-01-31 17:35:34,483 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:35:34,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:35:34,483 INFO L85 PathProgramCache]: Analyzing trace with hash -434567189, now seen corresponding path program 121 times
[2022-01-31 17:35:34,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:35:34,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019414896]
[2022-01-31 17:35:34,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:35:34,484 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:35:34,484 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:35:34,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:35:34,491 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:35:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:35:37,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:35:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:35:37,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:35:37,360 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:35:37,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019414896]
[2022-01-31 17:35:37,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1019414896] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:35:37,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:35:37,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [125] imperfect sequences [] total 125
[2022-01-31 17:35:37,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477368774]
[2022-01-31 17:35:37,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:35:37,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states
[2022-01-31 17:35:37,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:35:37,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants.
[2022-01-31 17:35:37,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7628, Invalid=7872, Unknown=0, NotChecked=0, Total=15500
[2022-01-31 17:35:37,362 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand has 125 states, 125 states have (on average 1.04) internal successors, (130), 124 states have internal predecessors, (130), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:35:41,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:35:41,321 INFO L93 Difference]: Finished difference Result 151 states and 153 transitions.
[2022-01-31 17:35:41,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states.
[2022-01-31 17:35:41,321 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 1.04) internal successors, (130), 124 states have internal predecessors, (130), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 134
[2022-01-31 17:35:41,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:35:41,322 INFO L225 Difference]: With dead ends: 151
[2022-01-31 17:35:41,322 INFO L226 Difference]: Without dead ends: 140
[2022-01-31 17:35:41,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7502 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=22878, Invalid=37884, Unknown=0, NotChecked=0, Total=60762
[2022-01-31 17:35:41,324 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:35:41,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 29 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:35:41,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states.
[2022-01-31 17:35:41,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140.
[2022-01-31 17:35:41,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 134 states have (on average 1.0149253731343284) internal successors, (136), 134 states have internal predecessors, (136), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:35:41,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 141 transitions.
[2022-01-31 17:35:41,327 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 141 transitions. Word has length 134
[2022-01-31 17:35:41,327 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:35:41,327 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 141 transitions.
[2022-01-31 17:35:41,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 1.04) internal successors, (130), 124 states have internal predecessors, (130), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:35:41,327 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 141 transitions.
[2022-01-31 17:35:41,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2022-01-31 17:35:41,328 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:35:41,328 INFO L514 BasicCegarLoop]: trace histogram [122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:35:41,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122
[2022-01-31 17:35:41,328 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:35:41,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:35:41,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1616164959, now seen corresponding path program 122 times
[2022-01-31 17:35:41,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:35:41,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212209218]
[2022-01-31 17:35:41,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:35:41,329 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:35:41,329 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:35:41,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:35:41,336 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:35:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:35:44,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:35:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:35:44,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:35:44,664 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:35:44,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212209218]
[2022-01-31 17:35:44,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [212209218] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:35:44,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:35:44,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [126] imperfect sequences [] total 126
[2022-01-31 17:35:44,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347212684]
[2022-01-31 17:35:44,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:35:44,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states
[2022-01-31 17:35:44,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:35:44,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants.
[2022-01-31 17:35:44,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7752, Invalid=7998, Unknown=0, NotChecked=0, Total=15750
[2022-01-31 17:35:44,668 INFO L87 Difference]: Start difference. First operand 140 states and 141 transitions. Second operand has 126 states, 126 states have (on average 1.0396825396825398) internal successors, (131), 125 states have internal predecessors, (131), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:35:48,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:35:48,779 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions.
[2022-01-31 17:35:48,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states.
[2022-01-31 17:35:48,779 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 1.0396825396825398) internal successors, (131), 125 states have internal predecessors, (131), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 135
[2022-01-31 17:35:48,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:35:48,779 INFO L225 Difference]: With dead ends: 152
[2022-01-31 17:35:48,779 INFO L226 Difference]: Without dead ends: 141
[2022-01-31 17:35:48,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7625 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=23250, Invalid=38502, Unknown=0, NotChecked=0, Total=61752
[2022-01-31 17:35:48,782 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:35:48,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:35:48,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states.
[2022-01-31 17:35:48,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141.
[2022-01-31 17:35:48,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 135 states have internal predecessors, (137), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:35:48,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions.
[2022-01-31 17:35:48,785 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 135
[2022-01-31 17:35:48,785 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:35:48,785 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions.
[2022-01-31 17:35:48,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 1.0396825396825398) internal successors, (131), 125 states have internal predecessors, (131), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:35:48,785 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions.
[2022-01-31 17:35:48,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137
[2022-01-31 17:35:48,786 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:35:48,786 INFO L514 BasicCegarLoop]: trace histogram [123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:35:48,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123
[2022-01-31 17:35:48,786 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:35:48,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:35:48,786 INFO L85 PathProgramCache]: Analyzing trace with hash 764352107, now seen corresponding path program 123 times
[2022-01-31 17:35:48,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:35:48,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766280991]
[2022-01-31 17:35:48,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:35:48,787 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:35:48,787 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:35:48,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:35:48,794 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:35:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:35:51,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:35:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:35:51,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:35:51,761 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:35:51,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766280991]
[2022-01-31 17:35:51,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1766280991] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:35:51,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:35:51,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [127] imperfect sequences [] total 127
[2022-01-31 17:35:51,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438583320]
[2022-01-31 17:35:51,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:35:51,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states
[2022-01-31 17:35:51,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:35:51,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants.
[2022-01-31 17:35:51,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002
[2022-01-31 17:35:51,765 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand has 127 states, 127 states have (on average 1.0393700787401574) internal successors, (132), 126 states have internal predecessors, (132), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:35:55,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:35:55,700 INFO L93 Difference]: Finished difference Result 153 states and 155 transitions.
[2022-01-31 17:35:55,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states.
[2022-01-31 17:35:55,700 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 127 states have (on average 1.0393700787401574) internal successors, (132), 126 states have internal predecessors, (132), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 136
[2022-01-31 17:35:55,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:35:55,701 INFO L225 Difference]: With dead ends: 153
[2022-01-31 17:35:55,701 INFO L226 Difference]: Without dead ends: 142
[2022-01-31 17:35:55,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7749 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=23625, Invalid=39125, Unknown=0, NotChecked=0, Total=62750
[2022-01-31 17:35:55,704 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:35:55,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 69 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:35:55,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states.
[2022-01-31 17:35:55,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142.
[2022-01-31 17:35:55,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 136 states have internal predecessors, (138), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:35:55,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions.
[2022-01-31 17:35:55,718 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 136
[2022-01-31 17:35:55,718 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:35:55,718 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions.
[2022-01-31 17:35:55,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 127 states have (on average 1.0393700787401574) internal successors, (132), 126 states have internal predecessors, (132), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:35:55,719 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions.
[2022-01-31 17:35:55,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138
[2022-01-31 17:35:55,719 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:35:55,719 INFO L514 BasicCegarLoop]: trace histogram [124, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:35:55,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124
[2022-01-31 17:35:55,720 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:35:55,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:35:55,720 INFO L85 PathProgramCache]: Analyzing trace with hash 127957471, now seen corresponding path program 124 times
[2022-01-31 17:35:55,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:35:55,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568063604]
[2022-01-31 17:35:55,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:35:55,721 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:35:55,721 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:35:55,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:35:55,729 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:35:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:36:00,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:36:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:36:00,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:36:00,155 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:36:00,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568063604]
[2022-01-31 17:36:00,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1568063604] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:36:00,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:36:00,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [128] imperfect sequences [] total 128
[2022-01-31 17:36:00,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373002082]
[2022-01-31 17:36:00,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:36:00,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states
[2022-01-31 17:36:00,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:36:00,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants.
[2022-01-31 17:36:00,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8003, Invalid=8253, Unknown=0, NotChecked=0, Total=16256
[2022-01-31 17:36:00,158 INFO L87 Difference]: Start difference. First operand 142 states and 143 transitions. Second operand has 128 states, 128 states have (on average 1.0390625) internal successors, (133), 127 states have internal predecessors, (133), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:36:03,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:36:03,850 INFO L93 Difference]: Finished difference Result 154 states and 156 transitions.
[2022-01-31 17:36:03,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states.
[2022-01-31 17:36:03,850 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 1.0390625) internal successors, (133), 127 states have internal predecessors, (133), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 137
[2022-01-31 17:36:03,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:36:03,850 INFO L225 Difference]: With dead ends: 154
[2022-01-31 17:36:03,850 INFO L226 Difference]: Without dead ends: 143
[2022-01-31 17:36:03,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7874 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=24003, Invalid=39753, Unknown=0, NotChecked=0, Total=63756
[2022-01-31 17:36:03,854 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:36:03,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:36:03,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states.
[2022-01-31 17:36:03,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143.
[2022-01-31 17:36:03,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 137 states have (on average 1.0145985401459854) internal successors, (139), 137 states have internal predecessors, (139), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:36:03,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions.
[2022-01-31 17:36:03,857 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 137
[2022-01-31 17:36:03,857 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:36:03,857 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions.
[2022-01-31 17:36:03,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 1.0390625) internal successors, (133), 127 states have internal predecessors, (133), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:36:03,857 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions.
[2022-01-31 17:36:03,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139
[2022-01-31 17:36:03,858 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:36:03,858 INFO L514 BasicCegarLoop]: trace histogram [125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:36:03,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125
[2022-01-31 17:36:03,858 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:36:03,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:36:03,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1874560235, now seen corresponding path program 125 times
[2022-01-31 17:36:03,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:36:03,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103783238]
[2022-01-31 17:36:03,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:36:03,860 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:36:03,860 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:36:03,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:36:03,872 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:36:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:36:06,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:36:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:36:06,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:36:06,939 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:36:06,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103783238]
[2022-01-31 17:36:06,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2103783238] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:36:06,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:36:06,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [129] imperfect sequences [] total 129
[2022-01-31 17:36:06,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387802100]
[2022-01-31 17:36:06,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:36:06,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 129 states
[2022-01-31 17:36:06,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:36:06,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants.
[2022-01-31 17:36:06,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8130, Invalid=8382, Unknown=0, NotChecked=0, Total=16512
[2022-01-31 17:36:06,942 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand has 129 states, 129 states have (on average 1.0387596899224807) internal successors, (134), 128 states have internal predecessors, (134), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:36:11,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:36:11,997 INFO L93 Difference]: Finished difference Result 155 states and 157 transitions.
[2022-01-31 17:36:11,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states.
[2022-01-31 17:36:11,997 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 1.0387596899224807) internal successors, (134), 128 states have internal predecessors, (134), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138
[2022-01-31 17:36:11,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:36:11,998 INFO L225 Difference]: With dead ends: 155
[2022-01-31 17:36:11,998 INFO L226 Difference]: Without dead ends: 144
[2022-01-31 17:36:12,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8000 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=24384, Invalid=40386, Unknown=0, NotChecked=0, Total=64770
[2022-01-31 17:36:12,001 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:36:12,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:36:12,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states.
[2022-01-31 17:36:12,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144.
[2022-01-31 17:36:12,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 138 states have (on average 1.0144927536231885) internal successors, (140), 138 states have internal predecessors, (140), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:36:12,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions.
[2022-01-31 17:36:12,004 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 138
[2022-01-31 17:36:12,004 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:36:12,004 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions.
[2022-01-31 17:36:12,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 1.0387596899224807) internal successors, (134), 128 states have internal predecessors, (134), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:36:12,004 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions.
[2022-01-31 17:36:12,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140
[2022-01-31 17:36:12,004 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:36:12,004 INFO L514 BasicCegarLoop]: trace histogram [126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:36:12,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126
[2022-01-31 17:36:12,005 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:36:12,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:36:12,005 INFO L85 PathProgramCache]: Analyzing trace with hash 184671071, now seen corresponding path program 126 times
[2022-01-31 17:36:12,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:36:12,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208622410]
[2022-01-31 17:36:12,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:36:12,006 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:36:12,006 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:36:12,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:36:12,013 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:36:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:36:17,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:36:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:36:17,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:36:17,223 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:36:17,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208622410]
[2022-01-31 17:36:17,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1208622410] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:36:17,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:36:17,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [130] imperfect sequences [] total 130
[2022-01-31 17:36:17,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374065539]
[2022-01-31 17:36:17,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:36:17,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states
[2022-01-31 17:36:17,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:36:17,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants.
[2022-01-31 17:36:17,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8258, Invalid=8512, Unknown=0, NotChecked=0, Total=16770
[2022-01-31 17:36:17,226 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 130 states, 130 states have (on average 1.0384615384615385) internal successors, (135), 129 states have internal predecessors, (135), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:36:21,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:36:21,539 INFO L93 Difference]: Finished difference Result 156 states and 158 transitions.
[2022-01-31 17:36:21,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states.
[2022-01-31 17:36:21,540 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 1.0384615384615385) internal successors, (135), 129 states have internal predecessors, (135), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 139
[2022-01-31 17:36:21,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:36:21,541 INFO L225 Difference]: With dead ends: 156
[2022-01-31 17:36:21,541 INFO L226 Difference]: Without dead ends: 145
[2022-01-31 17:36:21,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8127 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=24768, Invalid=41024, Unknown=0, NotChecked=0, Total=65792
[2022-01-31 17:36:21,545 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:36:21,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:36:21,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states.
[2022-01-31 17:36:21,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145.
[2022-01-31 17:36:21,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 139 states have (on average 1.014388489208633) internal successors, (141), 139 states have internal predecessors, (141), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:36:21,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions.
[2022-01-31 17:36:21,549 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 139
[2022-01-31 17:36:21,549 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:36:21,549 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions.
[2022-01-31 17:36:21,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 1.0384615384615385) internal successors, (135), 129 states have internal predecessors, (135), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:36:21,550 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions.
[2022-01-31 17:36:21,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141
[2022-01-31 17:36:21,550 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:36:21,550 INFO L514 BasicCegarLoop]: trace histogram [127, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:36:21,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127
[2022-01-31 17:36:21,550 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:36:21,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:36:21,551 INFO L85 PathProgramCache]: Analyzing trace with hash -662285461, now seen corresponding path program 127 times
[2022-01-31 17:36:21,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:36:21,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381236105]
[2022-01-31 17:36:21,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:36:21,552 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:36:21,552 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:36:21,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:36:21,560 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:36:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:36:24,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:36:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:36:24,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:36:24,837 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:36:24,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381236105]
[2022-01-31 17:36:24,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [381236105] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:36:24,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:36:24,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [131] imperfect sequences [] total 131
[2022-01-31 17:36:24,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611326333]
[2022-01-31 17:36:24,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:36:24,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states
[2022-01-31 17:36:24,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:36:24,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants.
[2022-01-31 17:36:24,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030
[2022-01-31 17:36:24,841 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand has 131 states, 131 states have (on average 1.0381679389312977) internal successors, (136), 130 states have internal predecessors, (136), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:36:28,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:36:28,858 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions.
[2022-01-31 17:36:28,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states.
[2022-01-31 17:36:28,858 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 1.0381679389312977) internal successors, (136), 130 states have internal predecessors, (136), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 140
[2022-01-31 17:36:28,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:36:28,858 INFO L225 Difference]: With dead ends: 157
[2022-01-31 17:36:28,858 INFO L226 Difference]: Without dead ends: 146
[2022-01-31 17:36:28,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8255 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=25155, Invalid=41667, Unknown=0, NotChecked=0, Total=66822
[2022-01-31 17:36:28,862 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:36:28,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:36:28,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states.
[2022-01-31 17:36:28,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146.
[2022-01-31 17:36:28,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 140 states have (on average 1.0142857142857142) internal successors, (142), 140 states have internal predecessors, (142), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:36:28,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions.
[2022-01-31 17:36:28,865 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 140
[2022-01-31 17:36:28,865 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:36:28,866 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions.
[2022-01-31 17:36:28,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 1.0381679389312977) internal successors, (136), 130 states have internal predecessors, (136), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:36:28,866 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions.
[2022-01-31 17:36:28,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142
[2022-01-31 17:36:28,866 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:36:28,866 INFO L514 BasicCegarLoop]: trace histogram [128, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:36:28,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128
[2022-01-31 17:36:28,866 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:36:28,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:36:28,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1148134177, now seen corresponding path program 128 times
[2022-01-31 17:36:28,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:36:28,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329473009]
[2022-01-31 17:36:28,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:36:28,867 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:36:28,867 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:36:28,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:36:28,875 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:36:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:36:32,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:36:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:36:32,271 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 17:36:32,271 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:36:32,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329473009]
[2022-01-31 17:36:32,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1329473009] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:36:32,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:36:32,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [132] imperfect sequences [] total 132
[2022-01-31 17:36:32,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865520837]
[2022-01-31 17:36:32,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:36:32,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states
[2022-01-31 17:36:32,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:36:32,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants.
[2022-01-31 17:36:32,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8517, Invalid=8775, Unknown=0, NotChecked=0, Total=17292
[2022-01-31 17:36:32,274 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand has 132 states, 132 states have (on average 1.0378787878787878) internal successors, (137), 131 states have internal predecessors, (137), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:36:36,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:36:36,793 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions.
[2022-01-31 17:36:36,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states.
[2022-01-31 17:36:36,794 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 1.0378787878787878) internal successors, (137), 131 states have internal predecessors, (137), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 141
[2022-01-31 17:36:36,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:36:36,794 INFO L225 Difference]: With dead ends: 158
[2022-01-31 17:36:36,794 INFO L226 Difference]: Without dead ends: 147
[2022-01-31 17:36:36,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8384 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=25545, Invalid=42315, Unknown=0, NotChecked=0, Total=67860
[2022-01-31 17:36:36,797 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:36:36,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:36:36,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states.
[2022-01-31 17:36:36,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147.
[2022-01-31 17:36:36,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 141 states have (on average 1.0141843971631206) internal successors, (143), 141 states have internal predecessors, (143), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:36:36,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions.
[2022-01-31 17:36:36,800 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 141
[2022-01-31 17:36:36,800 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:36:36,800 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions.
[2022-01-31 17:36:36,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 1.0378787878787878) internal successors, (137), 131 states have internal predecessors, (137), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:36:36,800 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions.
[2022-01-31 17:36:36,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2022-01-31 17:36:36,800 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:36:36,800 INFO L514 BasicCegarLoop]: trace histogram [129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:36:36,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129
[2022-01-31 17:36:36,800 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:36:36,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:36:36,800 INFO L85 PathProgramCache]: Analyzing trace with hash 970424811, now seen corresponding path program 129 times
[2022-01-31 17:36:36,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:36:36,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931204512]
[2022-01-31 17:36:36,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:36:36,801 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:36:36,801 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:36:36,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:36:36,818 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:36:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:36:40,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:36:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:36:40,333 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 17:36:40,333 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:36:40,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931204512]
[2022-01-31 17:36:40,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [931204512] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:36:40,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:36:40,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [133] imperfect sequences [] total 133
[2022-01-31 17:36:40,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418655992]
[2022-01-31 17:36:40,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:36:40,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 133 states
[2022-01-31 17:36:40,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:36:40,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants.
[2022-01-31 17:36:40,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8648, Invalid=8908, Unknown=0, NotChecked=0, Total=17556
[2022-01-31 17:36:40,336 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand has 133 states, 133 states have (on average 1.037593984962406) internal successors, (138), 132 states have internal predecessors, (138), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:36:44,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:36:44,778 INFO L93 Difference]: Finished difference Result 159 states and 161 transitions.
[2022-01-31 17:36:44,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states.
[2022-01-31 17:36:44,778 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 1.037593984962406) internal successors, (138), 132 states have internal predecessors, (138), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142
[2022-01-31 17:36:44,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:36:44,778 INFO L225 Difference]: With dead ends: 159
[2022-01-31 17:36:44,778 INFO L226 Difference]: Without dead ends: 148
[2022-01-31 17:36:44,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8514 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=25938, Invalid=42968, Unknown=0, NotChecked=0, Total=68906
[2022-01-31 17:36:44,781 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:36:44,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:36:44,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states.
[2022-01-31 17:36:44,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148.
[2022-01-31 17:36:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 142 states have internal predecessors, (144), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:36:44,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions.
[2022-01-31 17:36:44,784 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 142
[2022-01-31 17:36:44,785 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:36:44,785 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions.
[2022-01-31 17:36:44,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 1.037593984962406) internal successors, (138), 132 states have internal predecessors, (138), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:36:44,785 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions.
[2022-01-31 17:36:44,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144
[2022-01-31 17:36:44,785 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:36:44,785 INFO L514 BasicCegarLoop]: trace histogram [130, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:36:44,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130
[2022-01-31 17:36:44,785 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:36:44,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:36:44,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2073723297, now seen corresponding path program 130 times
[2022-01-31 17:36:44,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:36:44,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366018121]
[2022-01-31 17:36:44,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:36:44,786 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:36:44,786 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:36:44,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:36:44,797 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:36:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:36:48,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:36:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:36:48,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:36:48,842 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:36:48,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366018121]
[2022-01-31 17:36:48,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1366018121] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:36:48,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:36:48,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [134] imperfect sequences [] total 134
[2022-01-31 17:36:48,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176346703]
[2022-01-31 17:36:48,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:36:48,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 134 states
[2022-01-31 17:36:48,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:36:48,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants.
[2022-01-31 17:36:48,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8780, Invalid=9042, Unknown=0, NotChecked=0, Total=17822
[2022-01-31 17:36:48,845 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand has 134 states, 134 states have (on average 1.037313432835821) internal successors, (139), 133 states have internal predecessors, (139), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:36:53,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:36:53,041 INFO L93 Difference]: Finished difference Result 160 states and 162 transitions.
[2022-01-31 17:36:53,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states.
[2022-01-31 17:36:53,042 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 1.037313432835821) internal successors, (139), 133 states have internal predecessors, (139), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 143
[2022-01-31 17:36:53,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:36:53,042 INFO L225 Difference]: With dead ends: 160
[2022-01-31 17:36:53,042 INFO L226 Difference]: Without dead ends: 149
[2022-01-31 17:36:53,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8645 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=26334, Invalid=43626, Unknown=0, NotChecked=0, Total=69960
[2022-01-31 17:36:53,045 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:36:53,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:36:53,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states.
[2022-01-31 17:36:53,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149.
[2022-01-31 17:36:53,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 143 states have (on average 1.013986013986014) internal successors, (145), 143 states have internal predecessors, (145), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:36:53,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions.
[2022-01-31 17:36:53,048 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 143
[2022-01-31 17:36:53,048 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:36:53,048 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions.
[2022-01-31 17:36:53,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 1.037313432835821) internal successors, (139), 133 states have internal predecessors, (139), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:36:53,048 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions.
[2022-01-31 17:36:53,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145
[2022-01-31 17:36:53,049 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:36:53,049 INFO L514 BasicCegarLoop]: trace histogram [131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:36:53,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131
[2022-01-31 17:36:53,049 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:36:53,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:36:53,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1953034133, now seen corresponding path program 131 times
[2022-01-31 17:36:53,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:36:53,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51936725]
[2022-01-31 17:36:53,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:36:53,058 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:36:53,058 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:36:53,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:36:53,067 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:36:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:36:57,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:36:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:36:57,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:36:57,064 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:36:57,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51936725]
[2022-01-31 17:36:57,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [51936725] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:36:57,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:36:57,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [135] imperfect sequences [] total 135
[2022-01-31 17:36:57,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416184441]
[2022-01-31 17:36:57,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:36:57,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 135 states
[2022-01-31 17:36:57,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:36:57,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants.
[2022-01-31 17:36:57,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090
[2022-01-31 17:36:57,067 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand has 135 states, 135 states have (on average 1.037037037037037) internal successors, (140), 134 states have internal predecessors, (140), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:37:01,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:37:01,734 INFO L93 Difference]: Finished difference Result 161 states and 163 transitions.
[2022-01-31 17:37:01,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states.
[2022-01-31 17:37:01,734 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 1.037037037037037) internal successors, (140), 134 states have internal predecessors, (140), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 144
[2022-01-31 17:37:01,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:37:01,734 INFO L225 Difference]: With dead ends: 161
[2022-01-31 17:37:01,734 INFO L226 Difference]: Without dead ends: 150
[2022-01-31 17:37:01,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8777 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26733, Invalid=44289, Unknown=0, NotChecked=0, Total=71022
[2022-01-31 17:37:01,738 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:37:01,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:37:01,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states.
[2022-01-31 17:37:01,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150.
[2022-01-31 17:37:01,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 144 states have (on average 1.0138888888888888) internal successors, (146), 144 states have internal predecessors, (146), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:37:01,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 151 transitions.
[2022-01-31 17:37:01,741 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 151 transitions. Word has length 144
[2022-01-31 17:37:01,741 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:37:01,742 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 151 transitions.
[2022-01-31 17:37:01,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 135 states have (on average 1.037037037037037) internal successors, (140), 134 states have internal predecessors, (140), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:37:01,742 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 151 transitions.
[2022-01-31 17:37:01,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146
[2022-01-31 17:37:01,742 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:37:01,742 INFO L514 BasicCegarLoop]: trace histogram [132, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:37:01,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132
[2022-01-31 17:37:01,742 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:37:01,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:37:01,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1788329951, now seen corresponding path program 132 times
[2022-01-31 17:37:01,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:37:01,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509071744]
[2022-01-31 17:37:01,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:37:01,743 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:37:01,743 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:37:01,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:37:01,752 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:37:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:37:06,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:37:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:37:06,233 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 17:37:06,233 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:37:06,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509071744]
[2022-01-31 17:37:06,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1509071744] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:37:06,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:37:06,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [136] imperfect sequences [] total 136
[2022-01-31 17:37:06,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363263596]
[2022-01-31 17:37:06,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:37:06,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 136 states
[2022-01-31 17:37:06,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:37:06,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants.
[2022-01-31 17:37:06,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9047, Invalid=9313, Unknown=0, NotChecked=0, Total=18360
[2022-01-31 17:37:06,237 INFO L87 Difference]: Start difference. First operand 150 states and 151 transitions. Second operand has 136 states, 136 states have (on average 1.036764705882353) internal successors, (141), 135 states have internal predecessors, (141), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:37:11,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:37:11,148 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions.
[2022-01-31 17:37:11,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states.
[2022-01-31 17:37:11,148 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 1.036764705882353) internal successors, (141), 135 states have internal predecessors, (141), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145
[2022-01-31 17:37:11,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:37:11,149 INFO L225 Difference]: With dead ends: 162
[2022-01-31 17:37:11,149 INFO L226 Difference]: Without dead ends: 151
[2022-01-31 17:37:11,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8910 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=27135, Invalid=44957, Unknown=0, NotChecked=0, Total=72092
[2022-01-31 17:37:11,151 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:37:11,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:37:11,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states.
[2022-01-31 17:37:11,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151.
[2022-01-31 17:37:11,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 145 states have (on average 1.013793103448276) internal successors, (147), 145 states have internal predecessors, (147), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:37:11,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions.
[2022-01-31 17:37:11,156 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 145
[2022-01-31 17:37:11,156 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:37:11,156 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions.
[2022-01-31 17:37:11,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 136 states have (on average 1.036764705882353) internal successors, (141), 135 states have internal predecessors, (141), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:37:11,156 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions.
[2022-01-31 17:37:11,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2022-01-31 17:37:11,157 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:37:11,157 INFO L514 BasicCegarLoop]: trace histogram [133, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:37:11,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133
[2022-01-31 17:37:11,157 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:37:11,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:37:11,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1806499563, now seen corresponding path program 133 times
[2022-01-31 17:37:11,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:37:11,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875734570]
[2022-01-31 17:37:11,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:37:11,158 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:37:11,159 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:37:11,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:37:11,167 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:37:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:37:14,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:37:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:37:14,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:37:14,995 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:37:14,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875734570]
[2022-01-31 17:37:14,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [875734570] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:37:14,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:37:14,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [137] imperfect sequences [] total 137
[2022-01-31 17:37:14,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236077451]
[2022-01-31 17:37:14,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:37:14,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 137 states
[2022-01-31 17:37:14,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:37:14,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants.
[2022-01-31 17:37:14,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9182, Invalid=9450, Unknown=0, NotChecked=0, Total=18632
[2022-01-31 17:37:14,999 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand has 137 states, 137 states have (on average 1.0364963503649636) internal successors, (142), 136 states have internal predecessors, (142), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:37:19,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:37:19,508 INFO L93 Difference]: Finished difference Result 163 states and 165 transitions.
[2022-01-31 17:37:19,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states.
[2022-01-31 17:37:19,509 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 1.0364963503649636) internal successors, (142), 136 states have internal predecessors, (142), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 146
[2022-01-31 17:37:19,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:37:19,509 INFO L225 Difference]: With dead ends: 163
[2022-01-31 17:37:19,509 INFO L226 Difference]: Without dead ends: 152
[2022-01-31 17:37:19,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9044 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=27540, Invalid=45630, Unknown=0, NotChecked=0, Total=73170
[2022-01-31 17:37:19,513 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:37:19,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:37:19,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states.
[2022-01-31 17:37:19,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152.
[2022-01-31 17:37:19,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 146 states have (on average 1.0136986301369864) internal successors, (148), 146 states have internal predecessors, (148), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:37:19,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions.
[2022-01-31 17:37:19,516 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 146
[2022-01-31 17:37:19,516 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:37:19,516 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions.
[2022-01-31 17:37:19,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 1.0364963503649636) internal successors, (142), 136 states have internal predecessors, (142), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:37:19,517 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions.
[2022-01-31 17:37:19,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148
[2022-01-31 17:37:19,517 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:37:19,517 INFO L514 BasicCegarLoop]: trace histogram [134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:37:19,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134
[2022-01-31 17:37:19,517 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:37:19,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:37:19,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1925209761, now seen corresponding path program 134 times
[2022-01-31 17:37:19,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:37:19,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701584044]
[2022-01-31 17:37:19,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:37:19,518 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:37:19,518 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:37:19,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:37:19,527 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:37:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:37:23,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:37:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:37:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:37:23,540 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:37:23,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701584044]
[2022-01-31 17:37:23,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [701584044] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:37:23,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:37:23,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [138] imperfect sequences [] total 138
[2022-01-31 17:37:23,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611403358]
[2022-01-31 17:37:23,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:37:23,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 138 states
[2022-01-31 17:37:23,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:37:23,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants.
[2022-01-31 17:37:23,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9318, Invalid=9588, Unknown=0, NotChecked=0, Total=18906
[2022-01-31 17:37:23,543 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 138 states, 138 states have (on average 1.036231884057971) internal successors, (143), 137 states have internal predecessors, (143), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:37:28,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:37:28,027 INFO L93 Difference]: Finished difference Result 164 states and 166 transitions.
[2022-01-31 17:37:28,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states.
[2022-01-31 17:37:28,027 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 138 states have (on average 1.036231884057971) internal successors, (143), 137 states have internal predecessors, (143), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 147
[2022-01-31 17:37:28,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:37:28,028 INFO L225 Difference]: With dead ends: 164
[2022-01-31 17:37:28,028 INFO L226 Difference]: Without dead ends: 153
[2022-01-31 17:37:28,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9179 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=27948, Invalid=46308, Unknown=0, NotChecked=0, Total=74256
[2022-01-31 17:37:28,031 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:37:28,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:37:28,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states.
[2022-01-31 17:37:28,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153.
[2022-01-31 17:37:28,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 147 states have internal predecessors, (149), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:37:28,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions.
[2022-01-31 17:37:28,034 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 147
[2022-01-31 17:37:28,035 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:37:28,035 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions.
[2022-01-31 17:37:28,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 138 states have (on average 1.036231884057971) internal successors, (143), 137 states have internal predecessors, (143), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:37:28,035 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions.
[2022-01-31 17:37:28,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149
[2022-01-31 17:37:28,035 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:37:28,035 INFO L514 BasicCegarLoop]: trace histogram [135, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:37:28,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135
[2022-01-31 17:37:28,035 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:37:28,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:37:28,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1644081813, now seen corresponding path program 135 times
[2022-01-31 17:37:28,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:37:28,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262515475]
[2022-01-31 17:37:28,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:37:28,036 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:37:28,036 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:37:28,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:37:28,047 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:37:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:37:31,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:37:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:37:31,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:37:31,827 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:37:31,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262515475]
[2022-01-31 17:37:31,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1262515475] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:37:31,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:37:31,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [139] imperfect sequences [] total 139
[2022-01-31 17:37:31,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606733155]
[2022-01-31 17:37:31,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:37:31,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 139 states
[2022-01-31 17:37:31,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:37:31,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants.
[2022-01-31 17:37:31,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182
[2022-01-31 17:37:31,830 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand has 139 states, 139 states have (on average 1.0359712230215827) internal successors, (144), 138 states have internal predecessors, (144), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:37:39,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:37:39,008 INFO L93 Difference]: Finished difference Result 165 states and 167 transitions.
[2022-01-31 17:37:39,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states.
[2022-01-31 17:37:39,008 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 1.0359712230215827) internal successors, (144), 138 states have internal predecessors, (144), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 148
[2022-01-31 17:37:39,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:37:39,008 INFO L225 Difference]: With dead ends: 165
[2022-01-31 17:37:39,008 INFO L226 Difference]: Without dead ends: 154
[2022-01-31 17:37:39,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9315 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=28359, Invalid=46991, Unknown=0, NotChecked=0, Total=75350
[2022-01-31 17:37:39,012 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:37:39,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:37:39,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states.
[2022-01-31 17:37:39,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154.
[2022-01-31 17:37:39,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 148 states have (on average 1.0135135135135136) internal successors, (150), 148 states have internal predecessors, (150), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:37:39,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 155 transitions.
[2022-01-31 17:37:39,015 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 155 transitions. Word has length 148
[2022-01-31 17:37:39,015 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:37:39,015 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 155 transitions.
[2022-01-31 17:37:39,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 1.0359712230215827) internal successors, (144), 138 states have internal predecessors, (144), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:37:39,015 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 155 transitions.
[2022-01-31 17:37:39,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150
[2022-01-31 17:37:39,016 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:37:39,016 INFO L514 BasicCegarLoop]: trace histogram [136, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:37:39,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136
[2022-01-31 17:37:39,016 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:37:39,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:37:39,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1519050017, now seen corresponding path program 136 times
[2022-01-31 17:37:39,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:37:39,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522066189]
[2022-01-31 17:37:39,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:37:39,017 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:37:39,017 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:37:39,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:37:39,027 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:37:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:37:43,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:37:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:37:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:37:43,913 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:37:43,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522066189]
[2022-01-31 17:37:43,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [522066189] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:37:43,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:37:43,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [140] imperfect sequences [] total 140
[2022-01-31 17:37:43,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317334830]
[2022-01-31 17:37:43,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:37:43,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 140 states
[2022-01-31 17:37:43,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:37:43,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants.
[2022-01-31 17:37:43,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9593, Invalid=9867, Unknown=0, NotChecked=0, Total=19460
[2022-01-31 17:37:43,916 INFO L87 Difference]: Start difference. First operand 154 states and 155 transitions. Second operand has 140 states, 140 states have (on average 1.0357142857142858) internal successors, (145), 139 states have internal predecessors, (145), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:37:49,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:37:49,133 INFO L93 Difference]: Finished difference Result 166 states and 168 transitions.
[2022-01-31 17:37:49,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states.
[2022-01-31 17:37:49,134 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 1.0357142857142858) internal successors, (145), 139 states have internal predecessors, (145), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 149
[2022-01-31 17:37:49,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:37:49,135 INFO L225 Difference]: With dead ends: 166
[2022-01-31 17:37:49,135 INFO L226 Difference]: Without dead ends: 155
[2022-01-31 17:37:49,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9452 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=28773, Invalid=47679, Unknown=0, NotChecked=0, Total=76452
[2022-01-31 17:37:49,138 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:37:49,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:37:49,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states.
[2022-01-31 17:37:49,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155.
[2022-01-31 17:37:49,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 149 states have (on average 1.0134228187919463) internal successors, (151), 149 states have internal predecessors, (151), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:37:49,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions.
[2022-01-31 17:37:49,144 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 149
[2022-01-31 17:37:49,146 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:37:49,146 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions.
[2022-01-31 17:37:49,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 1.0357142857142858) internal successors, (145), 139 states have internal predecessors, (145), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:37:49,146 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions.
[2022-01-31 17:37:49,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151
[2022-01-31 17:37:49,147 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:37:49,147 INFO L514 BasicCegarLoop]: trace histogram [137, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:37:49,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137
[2022-01-31 17:37:49,147 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:37:49,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:37:49,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1938031637, now seen corresponding path program 137 times
[2022-01-31 17:37:49,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:37:49,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475518787]
[2022-01-31 17:37:49,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:37:49,148 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:37:49,148 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:37:49,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:37:49,158 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:37:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:37:53,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:37:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:37:53,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:37:53,543 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:37:53,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475518787]
[2022-01-31 17:37:53,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [475518787] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:37:53,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:37:53,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [141] imperfect sequences [] total 141
[2022-01-31 17:37:53,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311747262]
[2022-01-31 17:37:53,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:37:53,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 141 states
[2022-01-31 17:37:53,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:37:53,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants.
[2022-01-31 17:37:53,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9732, Invalid=10008, Unknown=0, NotChecked=0, Total=19740
[2022-01-31 17:37:53,546 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand has 141 states, 141 states have (on average 1.0354609929078014) internal successors, (146), 140 states have internal predecessors, (146), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:38:00,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:38:00,201 INFO L93 Difference]: Finished difference Result 167 states and 169 transitions.
[2022-01-31 17:38:00,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states.
[2022-01-31 17:38:00,202 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 141 states have (on average 1.0354609929078014) internal successors, (146), 140 states have internal predecessors, (146), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 150
[2022-01-31 17:38:00,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:38:00,202 INFO L225 Difference]: With dead ends: 167
[2022-01-31 17:38:00,202 INFO L226 Difference]: Without dead ends: 156
[2022-01-31 17:38:00,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9590 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=29190, Invalid=48372, Unknown=0, NotChecked=0, Total=77562
[2022-01-31 17:38:00,205 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:38:00,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:38:00,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states.
[2022-01-31 17:38:00,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156.
[2022-01-31 17:38:00,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 150 states have (on average 1.0133333333333334) internal successors, (152), 150 states have internal predecessors, (152), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:38:00,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions.
[2022-01-31 17:38:00,208 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 150
[2022-01-31 17:38:00,209 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:38:00,209 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions.
[2022-01-31 17:38:00,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 141 states have (on average 1.0354609929078014) internal successors, (146), 140 states have internal predecessors, (146), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:38:00,209 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions.
[2022-01-31 17:38:00,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152
[2022-01-31 17:38:00,209 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:38:00,209 INFO L514 BasicCegarLoop]: trace histogram [138, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:38:00,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138
[2022-01-31 17:38:00,209 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:38:00,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:38:00,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2041559969, now seen corresponding path program 138 times
[2022-01-31 17:38:00,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:38:00,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620434705]
[2022-01-31 17:38:00,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:38:00,210 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:38:00,210 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:38:00,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:38:00,221 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:38:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:38:06,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:38:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:38:06,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:38:06,644 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:38:06,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620434705]
[2022-01-31 17:38:06,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [620434705] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:38:06,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:38:06,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [142] imperfect sequences [] total 142
[2022-01-31 17:38:06,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826582694]
[2022-01-31 17:38:06,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:38:06,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 142 states
[2022-01-31 17:38:06,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:38:06,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants.
[2022-01-31 17:38:06,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9872, Invalid=10150, Unknown=0, NotChecked=0, Total=20022
[2022-01-31 17:38:06,649 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand has 142 states, 142 states have (on average 1.0352112676056338) internal successors, (147), 141 states have internal predecessors, (147), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:38:12,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:38:12,868 INFO L93 Difference]: Finished difference Result 168 states and 170 transitions.
[2022-01-31 17:38:12,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states.
[2022-01-31 17:38:12,869 INFO L78 Accepts]: Start accepts. Automaton has has 142 states, 142 states have (on average 1.0352112676056338) internal successors, (147), 141 states have internal predecessors, (147), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 151
[2022-01-31 17:38:12,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:38:12,869 INFO L225 Difference]: With dead ends: 168
[2022-01-31 17:38:12,869 INFO L226 Difference]: Without dead ends: 157
[2022-01-31 17:38:12,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9729 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=29610, Invalid=49070, Unknown=0, NotChecked=0, Total=78680
[2022-01-31 17:38:12,873 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:38:12,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:38:12,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states.
[2022-01-31 17:38:12,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157.
[2022-01-31 17:38:12,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 151 states have (on average 1.0132450331125828) internal successors, (153), 151 states have internal predecessors, (153), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:38:12,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions.
[2022-01-31 17:38:12,877 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 151
[2022-01-31 17:38:12,877 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:38:12,877 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions.
[2022-01-31 17:38:12,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 142 states, 142 states have (on average 1.0352112676056338) internal successors, (147), 141 states have internal predecessors, (147), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:38:12,878 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions.
[2022-01-31 17:38:12,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153
[2022-01-31 17:38:12,879 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:38:12,879 INFO L514 BasicCegarLoop]: trace histogram [139, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:38:12,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139
[2022-01-31 17:38:12,879 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:38:12,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:38:12,879 INFO L85 PathProgramCache]: Analyzing trace with hash -955970965, now seen corresponding path program 139 times
[2022-01-31 17:38:12,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:38:12,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003001057]
[2022-01-31 17:38:12,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:38:12,880 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:38:12,880 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:38:12,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:38:12,892 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:38:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:38:19,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:38:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:38:19,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:38:19,411 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:38:19,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003001057]
[2022-01-31 17:38:19,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2003001057] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:38:19,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:38:19,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [143] imperfect sequences [] total 143
[2022-01-31 17:38:19,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439106940]
[2022-01-31 17:38:19,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:38:19,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 143 states
[2022-01-31 17:38:19,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:38:19,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants.
[2022-01-31 17:38:19,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10013, Invalid=10293, Unknown=0, NotChecked=0, Total=20306
[2022-01-31 17:38:19,413 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand has 143 states, 143 states have (on average 1.034965034965035) internal successors, (148), 142 states have internal predecessors, (148), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:38:24,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:38:24,783 INFO L93 Difference]: Finished difference Result 169 states and 171 transitions.
[2022-01-31 17:38:24,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states.
[2022-01-31 17:38:24,784 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 1.034965034965035) internal successors, (148), 142 states have internal predecessors, (148), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 152
[2022-01-31 17:38:24,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:38:24,784 INFO L225 Difference]: With dead ends: 169
[2022-01-31 17:38:24,784 INFO L226 Difference]: Without dead ends: 158
[2022-01-31 17:38:24,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9869 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=30033, Invalid=49773, Unknown=0, NotChecked=0, Total=79806
[2022-01-31 17:38:24,789 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:38:24,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:38:24,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states.
[2022-01-31 17:38:24,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158.
[2022-01-31 17:38:24,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 152 states have (on average 1.013157894736842) internal successors, (154), 152 states have internal predecessors, (154), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:38:24,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 159 transitions.
[2022-01-31 17:38:24,793 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 159 transitions. Word has length 152
[2022-01-31 17:38:24,793 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:38:24,793 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 159 transitions.
[2022-01-31 17:38:24,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 1.034965034965035) internal successors, (148), 142 states have internal predecessors, (148), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:38:24,793 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 159 transitions.
[2022-01-31 17:38:24,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2022-01-31 17:38:24,794 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:38:24,794 INFO L514 BasicCegarLoop]: trace histogram [140, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:38:24,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140
[2022-01-31 17:38:24,794 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:38:24,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:38:24,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1662450209, now seen corresponding path program 140 times
[2022-01-31 17:38:24,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:38:24,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783810650]
[2022-01-31 17:38:24,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:38:24,795 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:38:24,795 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:38:24,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:38:24,807 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:38:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:38:29,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:38:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:38:29,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:38:29,281 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:38:29,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783810650]
[2022-01-31 17:38:29,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [783810650] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:38:29,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:38:29,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [144] imperfect sequences [] total 144
[2022-01-31 17:38:29,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095603488]
[2022-01-31 17:38:29,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:38:29,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 144 states
[2022-01-31 17:38:29,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:38:29,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants.
[2022-01-31 17:38:29,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10155, Invalid=10437, Unknown=0, NotChecked=0, Total=20592
[2022-01-31 17:38:29,284 INFO L87 Difference]: Start difference. First operand 158 states and 159 transitions. Second operand has 144 states, 144 states have (on average 1.0347222222222223) internal successors, (149), 143 states have internal predecessors, (149), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:38:34,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:38:34,315 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions.
[2022-01-31 17:38:34,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states.
[2022-01-31 17:38:34,315 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 144 states have (on average 1.0347222222222223) internal successors, (149), 143 states have internal predecessors, (149), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 153
[2022-01-31 17:38:34,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:38:34,316 INFO L225 Difference]: With dead ends: 170
[2022-01-31 17:38:34,316 INFO L226 Difference]: Without dead ends: 159
[2022-01-31 17:38:34,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10010 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=30459, Invalid=50481, Unknown=0, NotChecked=0, Total=80940
[2022-01-31 17:38:34,319 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:38:34,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 64 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:38:34,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states.
[2022-01-31 17:38:34,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159.
[2022-01-31 17:38:34,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 153 states have (on average 1.0130718954248366) internal successors, (155), 153 states have internal predecessors, (155), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:38:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions.
[2022-01-31 17:38:34,322 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 153
[2022-01-31 17:38:34,322 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:38:34,322 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions.
[2022-01-31 17:38:34,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 144 states have (on average 1.0347222222222223) internal successors, (149), 143 states have internal predecessors, (149), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:38:34,322 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions.
[2022-01-31 17:38:34,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155
[2022-01-31 17:38:34,323 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:38:34,323 INFO L514 BasicCegarLoop]: trace histogram [141, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:38:34,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141
[2022-01-31 17:38:34,323 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:38:34,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:38:34,323 INFO L85 PathProgramCache]: Analyzing trace with hash -2088470293, now seen corresponding path program 141 times
[2022-01-31 17:38:34,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:38:34,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793881486]
[2022-01-31 17:38:34,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:38:34,324 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:38:34,324 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:38:34,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:38:34,335 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:38:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:38:40,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:38:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:38:40,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:38:40,470 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:38:40,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793881486]
[2022-01-31 17:38:40,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [793881486] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:38:40,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:38:40,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [145] imperfect sequences [] total 145
[2022-01-31 17:38:40,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878510315]
[2022-01-31 17:38:40,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:38:40,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 145 states
[2022-01-31 17:38:40,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:38:40,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants.
[2022-01-31 17:38:40,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10298, Invalid=10582, Unknown=0, NotChecked=0, Total=20880
[2022-01-31 17:38:40,473 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand has 145 states, 145 states have (on average 1.0344827586206897) internal successors, (150), 144 states have internal predecessors, (150), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:38:45,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:38:45,394 INFO L93 Difference]: Finished difference Result 171 states and 173 transitions.
[2022-01-31 17:38:45,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states.
[2022-01-31 17:38:45,395 INFO L78 Accepts]: Start accepts. Automaton has has 145 states, 145 states have (on average 1.0344827586206897) internal successors, (150), 144 states have internal predecessors, (150), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 154
[2022-01-31 17:38:45,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:38:45,395 INFO L225 Difference]: With dead ends: 171
[2022-01-31 17:38:45,395 INFO L226 Difference]: Without dead ends: 160
[2022-01-31 17:38:45,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10152 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=30888, Invalid=51194, Unknown=0, NotChecked=0, Total=82082
[2022-01-31 17:38:45,398 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:38:45,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 29 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:38:45,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states.
[2022-01-31 17:38:45,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160.
[2022-01-31 17:38:45,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 154 states have (on average 1.0129870129870129) internal successors, (156), 154 states have internal predecessors, (156), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:38:45,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions.
[2022-01-31 17:38:45,401 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 154
[2022-01-31 17:38:45,402 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:38:45,402 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions.
[2022-01-31 17:38:45,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 145 states, 145 states have (on average 1.0344827586206897) internal successors, (150), 144 states have internal predecessors, (150), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:38:45,402 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions.
[2022-01-31 17:38:45,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156
[2022-01-31 17:38:45,402 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:38:45,402 INFO L514 BasicCegarLoop]: trace histogram [142, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:38:45,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142
[2022-01-31 17:38:45,402 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:38:45,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:38:45,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1884776287, now seen corresponding path program 142 times
[2022-01-31 17:38:45,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:38:45,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277874036]
[2022-01-31 17:38:45,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:38:45,403 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:38:45,403 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:38:45,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:38:45,415 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:38:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:38:49,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:38:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:38:49,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:38:49,429 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:38:49,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277874036]
[2022-01-31 17:38:49,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [277874036] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:38:49,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:38:49,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [146] imperfect sequences [] total 146
[2022-01-31 17:38:49,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258186633]
[2022-01-31 17:38:49,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:38:49,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 146 states
[2022-01-31 17:38:49,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:38:49,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants.
[2022-01-31 17:38:49,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10442, Invalid=10728, Unknown=0, NotChecked=0, Total=21170
[2022-01-31 17:38:49,432 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand has 146 states, 146 states have (on average 1.0342465753424657) internal successors, (151), 145 states have internal predecessors, (151), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:38:55,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:38:55,016 INFO L93 Difference]: Finished difference Result 172 states and 174 transitions.
[2022-01-31 17:38:55,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states.
[2022-01-31 17:38:55,017 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 1.0342465753424657) internal successors, (151), 145 states have internal predecessors, (151), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 155
[2022-01-31 17:38:55,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:38:55,017 INFO L225 Difference]: With dead ends: 172
[2022-01-31 17:38:55,017 INFO L226 Difference]: Without dead ends: 161
[2022-01-31 17:38:55,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10295 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=31320, Invalid=51912, Unknown=0, NotChecked=0, Total=83232
[2022-01-31 17:38:55,022 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:38:55,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:38:55,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states.
[2022-01-31 17:38:55,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161.
[2022-01-31 17:38:55,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 155 states have (on average 1.0129032258064516) internal successors, (157), 155 states have internal predecessors, (157), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:38:55,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions.
[2022-01-31 17:38:55,025 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 155
[2022-01-31 17:38:55,026 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:38:55,026 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions.
[2022-01-31 17:38:55,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 1.0342465753424657) internal successors, (151), 145 states have internal predecessors, (151), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:38:55,026 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions.
[2022-01-31 17:38:55,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2022-01-31 17:38:55,026 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:38:55,026 INFO L514 BasicCegarLoop]: trace histogram [143, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:38:55,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143
[2022-01-31 17:38:55,026 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:38:55,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:38:55,027 INFO L85 PathProgramCache]: Analyzing trace with hash 501368683, now seen corresponding path program 143 times
[2022-01-31 17:38:55,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:38:55,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629041956]
[2022-01-31 17:38:55,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:38:55,027 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:38:55,027 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:38:55,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:38:55,038 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:38:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:39:00,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:39:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:39:00,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:39:00,968 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:39:00,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629041956]
[2022-01-31 17:39:00,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [629041956] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:39:00,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:39:00,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [147] imperfect sequences [] total 147
[2022-01-31 17:39:00,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617832293]
[2022-01-31 17:39:00,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:39:00,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 147 states
[2022-01-31 17:39:00,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:39:00,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants.
[2022-01-31 17:39:00,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10587, Invalid=10875, Unknown=0, NotChecked=0, Total=21462
[2022-01-31 17:39:00,971 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand has 147 states, 147 states have (on average 1.034013605442177) internal successors, (152), 146 states have internal predecessors, (152), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:39:08,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:39:08,387 INFO L93 Difference]: Finished difference Result 173 states and 175 transitions.
[2022-01-31 17:39:08,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states.
[2022-01-31 17:39:08,387 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 147 states have (on average 1.034013605442177) internal successors, (152), 146 states have internal predecessors, (152), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 156
[2022-01-31 17:39:08,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:39:08,388 INFO L225 Difference]: With dead ends: 173
[2022-01-31 17:39:08,388 INFO L226 Difference]: Without dead ends: 162
[2022-01-31 17:39:08,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10439 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=31755, Invalid=52635, Unknown=0, NotChecked=0, Total=84390
[2022-01-31 17:39:08,390 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:39:08,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:39:08,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states.
[2022-01-31 17:39:08,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162.
[2022-01-31 17:39:08,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 156 states have (on average 1.0128205128205128) internal successors, (158), 156 states have internal predecessors, (158), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:39:08,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 163 transitions.
[2022-01-31 17:39:08,394 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 163 transitions. Word has length 156
[2022-01-31 17:39:08,394 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:39:08,394 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 163 transitions.
[2022-01-31 17:39:08,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 147 states, 147 states have (on average 1.034013605442177) internal successors, (152), 146 states have internal predecessors, (152), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:39:08,394 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 163 transitions.
[2022-01-31 17:39:08,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158
[2022-01-31 17:39:08,394 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:39:08,394 INFO L514 BasicCegarLoop]: trace histogram [144, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:39:08,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144
[2022-01-31 17:39:08,394 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:39:08,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:39:08,395 INFO L85 PathProgramCache]: Analyzing trace with hash 565405919, now seen corresponding path program 144 times
[2022-01-31 17:39:08,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:39:08,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627696721]
[2022-01-31 17:39:08,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:39:08,396 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:39:08,396 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:39:08,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:39:08,413 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:39:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:39:12,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:39:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:39:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:39:12,856 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:39:12,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627696721]
[2022-01-31 17:39:12,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [627696721] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:39:12,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:39:12,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [148] imperfect sequences [] total 148
[2022-01-31 17:39:12,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104221494]
[2022-01-31 17:39:12,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:39:12,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 148 states
[2022-01-31 17:39:12,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:39:12,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants.
[2022-01-31 17:39:12,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10733, Invalid=11023, Unknown=0, NotChecked=0, Total=21756
[2022-01-31 17:39:12,860 INFO L87 Difference]: Start difference. First operand 162 states and 163 transitions. Second operand has 148 states, 148 states have (on average 1.0337837837837838) internal successors, (153), 147 states have internal predecessors, (153), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:39:18,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:39:18,002 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions.
[2022-01-31 17:39:18,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states.
[2022-01-31 17:39:18,002 INFO L78 Accepts]: Start accepts. Automaton has has 148 states, 148 states have (on average 1.0337837837837838) internal successors, (153), 147 states have internal predecessors, (153), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157
[2022-01-31 17:39:18,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:39:18,003 INFO L225 Difference]: With dead ends: 174
[2022-01-31 17:39:18,003 INFO L226 Difference]: Without dead ends: 163
[2022-01-31 17:39:18,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10584 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=32193, Invalid=53363, Unknown=0, NotChecked=0, Total=85556
[2022-01-31 17:39:18,006 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:39:18,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:39:18,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states.
[2022-01-31 17:39:18,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163.
[2022-01-31 17:39:18,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 157 states have (on average 1.0127388535031847) internal successors, (159), 157 states have internal predecessors, (159), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:39:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions.
[2022-01-31 17:39:18,009 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 157
[2022-01-31 17:39:18,009 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:39:18,009 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions.
[2022-01-31 17:39:18,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 148 states, 148 states have (on average 1.0337837837837838) internal successors, (153), 147 states have internal predecessors, (153), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:39:18,009 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions.
[2022-01-31 17:39:18,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159
[2022-01-31 17:39:18,010 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:39:18,010 INFO L514 BasicCegarLoop]: trace histogram [145, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:39:18,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145
[2022-01-31 17:39:18,010 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:39:18,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:39:18,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1744407061, now seen corresponding path program 145 times
[2022-01-31 17:39:18,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:39:18,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784308732]
[2022-01-31 17:39:18,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:39:18,011 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:39:18,011 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:39:18,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:39:18,021 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:39:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:39:22,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:39:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:39:22,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:39:22,966 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:39:22,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784308732]
[2022-01-31 17:39:22,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [784308732] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:39:22,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:39:22,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [149] imperfect sequences [] total 149
[2022-01-31 17:39:22,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683196163]
[2022-01-31 17:39:22,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:39:22,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 149 states
[2022-01-31 17:39:22,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:39:22,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants.
[2022-01-31 17:39:22,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10880, Invalid=11172, Unknown=0, NotChecked=0, Total=22052
[2022-01-31 17:39:22,969 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand has 149 states, 149 states have (on average 1.0335570469798658) internal successors, (154), 148 states have internal predecessors, (154), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:39:28,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:39:28,247 INFO L93 Difference]: Finished difference Result 175 states and 177 transitions.
[2022-01-31 17:39:28,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states.
[2022-01-31 17:39:28,247 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 1.0335570469798658) internal successors, (154), 148 states have internal predecessors, (154), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 158
[2022-01-31 17:39:28,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:39:28,248 INFO L225 Difference]: With dead ends: 175
[2022-01-31 17:39:28,248 INFO L226 Difference]: Without dead ends: 164
[2022-01-31 17:39:28,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10730 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=32634, Invalid=54096, Unknown=0, NotChecked=0, Total=86730
[2022-01-31 17:39:28,252 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:39:28,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:39:28,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states.
[2022-01-31 17:39:28,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164.
[2022-01-31 17:39:28,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 158 states have (on average 1.0126582278481013) internal successors, (160), 158 states have internal predecessors, (160), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:39:28,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 165 transitions.
[2022-01-31 17:39:28,255 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 165 transitions. Word has length 158
[2022-01-31 17:39:28,255 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:39:28,255 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 165 transitions.
[2022-01-31 17:39:28,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 1.0335570469798658) internal successors, (154), 148 states have internal predecessors, (154), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:39:28,255 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 165 transitions.
[2022-01-31 17:39:28,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160
[2022-01-31 17:39:28,256 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:39:28,256 INFO L514 BasicCegarLoop]: trace histogram [146, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:39:28,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146
[2022-01-31 17:39:28,256 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:39:28,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:39:28,256 INFO L85 PathProgramCache]: Analyzing trace with hash -334165409, now seen corresponding path program 146 times
[2022-01-31 17:39:28,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:39:28,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607268381]
[2022-01-31 17:39:28,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:39:28,257 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:39:28,257 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:39:28,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:39:28,267 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:39:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:39:33,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:39:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:39:33,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:39:33,450 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:39:33,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607268381]
[2022-01-31 17:39:33,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1607268381] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:39:33,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:39:33,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [150] imperfect sequences [] total 150
[2022-01-31 17:39:33,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942869804]
[2022-01-31 17:39:33,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:39:33,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 150 states
[2022-01-31 17:39:33,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:39:33,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants.
[2022-01-31 17:39:33,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11028, Invalid=11322, Unknown=0, NotChecked=0, Total=22350
[2022-01-31 17:39:33,454 INFO L87 Difference]: Start difference. First operand 164 states and 165 transitions. Second operand has 150 states, 150 states have (on average 1.0333333333333334) internal successors, (155), 149 states have internal predecessors, (155), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:39:38,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:39:38,490 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions.
[2022-01-31 17:39:38,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states.
[2022-01-31 17:39:38,490 INFO L78 Accepts]: Start accepts. Automaton has has 150 states, 150 states have (on average 1.0333333333333334) internal successors, (155), 149 states have internal predecessors, (155), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 159
[2022-01-31 17:39:38,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:39:38,490 INFO L225 Difference]: With dead ends: 176
[2022-01-31 17:39:38,490 INFO L226 Difference]: Without dead ends: 165
[2022-01-31 17:39:38,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10877 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=33078, Invalid=54834, Unknown=0, NotChecked=0, Total=87912
[2022-01-31 17:39:38,493 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:39:38,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:39:38,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states.
[2022-01-31 17:39:38,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165.
[2022-01-31 17:39:38,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 159 states have internal predecessors, (161), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:39:38,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions.
[2022-01-31 17:39:38,497 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 159
[2022-01-31 17:39:38,497 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:39:38,497 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions.
[2022-01-31 17:39:38,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 150 states, 150 states have (on average 1.0333333333333334) internal successors, (155), 149 states have internal predecessors, (155), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:39:38,497 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions.
[2022-01-31 17:39:38,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161
[2022-01-31 17:39:38,497 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:39:38,497 INFO L514 BasicCegarLoop]: trace histogram [147, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:39:38,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147
[2022-01-31 17:39:38,497 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:39:38,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:39:38,498 INFO L85 PathProgramCache]: Analyzing trace with hash 433652843, now seen corresponding path program 147 times
[2022-01-31 17:39:38,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:39:38,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523891134]
[2022-01-31 17:39:38,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:39:38,498 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:39:38,498 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:39:38,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:39:38,509 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:39:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:39:42,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:39:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:39:42,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:39:42,631 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:39:42,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523891134]
[2022-01-31 17:39:42,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [523891134] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:39:42,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:39:42,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [151] imperfect sequences [] total 151
[2022-01-31 17:39:42,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434417050]
[2022-01-31 17:39:42,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:39:42,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 151 states
[2022-01-31 17:39:42,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:39:42,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants.
[2022-01-31 17:39:42,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11177, Invalid=11473, Unknown=0, NotChecked=0, Total=22650
[2022-01-31 17:39:42,634 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand has 151 states, 151 states have (on average 1.033112582781457) internal successors, (156), 150 states have internal predecessors, (156), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:39:49,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:39:49,255 INFO L93 Difference]: Finished difference Result 177 states and 179 transitions.
[2022-01-31 17:39:49,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states.
[2022-01-31 17:39:49,255 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 151 states have (on average 1.033112582781457) internal successors, (156), 150 states have internal predecessors, (156), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 160
[2022-01-31 17:39:49,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:39:49,255 INFO L225 Difference]: With dead ends: 177
[2022-01-31 17:39:49,255 INFO L226 Difference]: Without dead ends: 166
[2022-01-31 17:39:49,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11025 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=33525, Invalid=55577, Unknown=0, NotChecked=0, Total=89102
[2022-01-31 17:39:49,259 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:39:49,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:39:49,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states.
[2022-01-31 17:39:49,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166.
[2022-01-31 17:39:49,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 160 states have (on average 1.0125) internal successors, (162), 160 states have internal predecessors, (162), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:39:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions.
[2022-01-31 17:39:49,263 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 160
[2022-01-31 17:39:49,263 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:39:49,263 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions.
[2022-01-31 17:39:49,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 151 states, 151 states have (on average 1.033112582781457) internal successors, (156), 150 states have internal predecessors, (156), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:39:49,263 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions.
[2022-01-31 17:39:49,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162
[2022-01-31 17:39:49,263 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:39:49,263 INFO L514 BasicCegarLoop]: trace histogram [148, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:39:49,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148
[2022-01-31 17:39:49,263 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:39:49,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:39:49,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1533785121, now seen corresponding path program 148 times
[2022-01-31 17:39:49,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:39:49,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597015832]
[2022-01-31 17:39:49,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:39:49,264 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:39:49,264 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:39:49,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:39:49,292 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:39:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:39:53,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:39:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:39:53,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:39:53,875 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:39:53,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597015832]
[2022-01-31 17:39:53,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1597015832] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:39:53,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:39:53,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [152] imperfect sequences [] total 152
[2022-01-31 17:39:53,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791643500]
[2022-01-31 17:39:53,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:39:53,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 152 states
[2022-01-31 17:39:53,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:39:53,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants.
[2022-01-31 17:39:53,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11327, Invalid=11625, Unknown=0, NotChecked=0, Total=22952
[2022-01-31 17:39:53,879 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand has 152 states, 152 states have (on average 1.0328947368421053) internal successors, (157), 151 states have internal predecessors, (157), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:39:58,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:39:58,885 INFO L93 Difference]: Finished difference Result 178 states and 180 transitions.
[2022-01-31 17:39:58,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states.
[2022-01-31 17:39:58,886 INFO L78 Accepts]: Start accepts. Automaton has has 152 states, 152 states have (on average 1.0328947368421053) internal successors, (157), 151 states have internal predecessors, (157), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 161
[2022-01-31 17:39:58,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:39:58,886 INFO L225 Difference]: With dead ends: 178
[2022-01-31 17:39:58,886 INFO L226 Difference]: Without dead ends: 167
[2022-01-31 17:39:58,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11174 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=33975, Invalid=56325, Unknown=0, NotChecked=0, Total=90300
[2022-01-31 17:39:58,890 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:39:58,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:39:58,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states.
[2022-01-31 17:39:58,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167.
[2022-01-31 17:39:58,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 161 states have (on average 1.0124223602484472) internal successors, (163), 161 states have internal predecessors, (163), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:39:58,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions.
[2022-01-31 17:39:58,893 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 161
[2022-01-31 17:39:58,893 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:39:58,894 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions.
[2022-01-31 17:39:58,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 152 states, 152 states have (on average 1.0328947368421053) internal successors, (157), 151 states have internal predecessors, (157), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:39:58,894 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions.
[2022-01-31 17:39:58,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163
[2022-01-31 17:39:58,894 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:39:58,894 INFO L514 BasicCegarLoop]: trace histogram [149, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:39:58,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149
[2022-01-31 17:39:58,894 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:39:58,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:39:58,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1900147435, now seen corresponding path program 149 times
[2022-01-31 17:39:58,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:39:58,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975280258]
[2022-01-31 17:39:58,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:39:58,895 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:39:58,895 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:39:58,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:39:58,906 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:39:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:40:03,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:40:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:40:03,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:40:03,920 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:40:03,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975280258]
[2022-01-31 17:40:03,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [975280258] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:40:03,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:40:03,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [153] imperfect sequences [] total 153
[2022-01-31 17:40:03,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26795209]
[2022-01-31 17:40:03,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:40:03,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 153 states
[2022-01-31 17:40:03,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:40:03,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants.
[2022-01-31 17:40:03,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11478, Invalid=11778, Unknown=0, NotChecked=0, Total=23256
[2022-01-31 17:40:03,923 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand has 153 states, 153 states have (on average 1.0326797385620916) internal successors, (158), 152 states have internal predecessors, (158), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:40:09,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:40:09,244 INFO L93 Difference]: Finished difference Result 179 states and 181 transitions.
[2022-01-31 17:40:09,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states.
[2022-01-31 17:40:09,244 INFO L78 Accepts]: Start accepts. Automaton has has 153 states, 153 states have (on average 1.0326797385620916) internal successors, (158), 152 states have internal predecessors, (158), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 162
[2022-01-31 17:40:09,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:40:09,244 INFO L225 Difference]: With dead ends: 179
[2022-01-31 17:40:09,244 INFO L226 Difference]: Without dead ends: 168
[2022-01-31 17:40:09,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11324 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=34428, Invalid=57078, Unknown=0, NotChecked=0, Total=91506
[2022-01-31 17:40:09,247 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:40:09,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 29 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:40:09,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states.
[2022-01-31 17:40:09,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168.
[2022-01-31 17:40:09,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 162 states have (on average 1.0123456790123457) internal successors, (164), 162 states have internal predecessors, (164), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:40:09,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions.
[2022-01-31 17:40:09,251 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 162
[2022-01-31 17:40:09,251 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:40:09,251 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions.
[2022-01-31 17:40:09,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 153 states, 153 states have (on average 1.0326797385620916) internal successors, (158), 152 states have internal predecessors, (158), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:40:09,251 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions.
[2022-01-31 17:40:09,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164
[2022-01-31 17:40:09,251 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:40:09,251 INFO L514 BasicCegarLoop]: trace histogram [150, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:40:09,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150
[2022-01-31 17:40:09,251 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:40:09,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:40:09,252 INFO L85 PathProgramCache]: Analyzing trace with hash 977874271, now seen corresponding path program 150 times
[2022-01-31 17:40:09,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:40:09,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164028079]
[2022-01-31 17:40:09,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:40:09,252 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:40:09,252 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:40:09,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:40:09,263 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:40:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:40:14,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:40:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:40:14,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:40:14,638 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:40:14,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164028079]
[2022-01-31 17:40:14,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [164028079] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:40:14,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:40:14,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [154] imperfect sequences [] total 154
[2022-01-31 17:40:14,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346914991]
[2022-01-31 17:40:14,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:40:14,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 154 states
[2022-01-31 17:40:14,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:40:14,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants.
[2022-01-31 17:40:14,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11630, Invalid=11932, Unknown=0, NotChecked=0, Total=23562
[2022-01-31 17:40:14,641 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand has 154 states, 154 states have (on average 1.0324675324675325) internal successors, (159), 153 states have internal predecessors, (159), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:40:19,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:40:19,993 INFO L93 Difference]: Finished difference Result 180 states and 182 transitions.
[2022-01-31 17:40:19,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states.
[2022-01-31 17:40:19,993 INFO L78 Accepts]: Start accepts. Automaton has has 154 states, 154 states have (on average 1.0324675324675325) internal successors, (159), 153 states have internal predecessors, (159), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 163
[2022-01-31 17:40:19,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:40:19,994 INFO L225 Difference]: With dead ends: 180
[2022-01-31 17:40:19,994 INFO L226 Difference]: Without dead ends: 169
[2022-01-31 17:40:19,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11475 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=34884, Invalid=57836, Unknown=0, NotChecked=0, Total=92720
[2022-01-31 17:40:19,998 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:40:19,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 64 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:40:19,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states.
[2022-01-31 17:40:20,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169.
[2022-01-31 17:40:20,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 163 states have (on average 1.0122699386503067) internal successors, (165), 163 states have internal predecessors, (165), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:40:20,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions.
[2022-01-31 17:40:20,001 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 163
[2022-01-31 17:40:20,002 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:40:20,002 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions.
[2022-01-31 17:40:20,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 154 states, 154 states have (on average 1.0324675324675325) internal successors, (159), 153 states have internal predecessors, (159), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:40:20,002 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions.
[2022-01-31 17:40:20,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165
[2022-01-31 17:40:20,002 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:40:20,002 INFO L514 BasicCegarLoop]: trace histogram [151, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:40:20,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151
[2022-01-31 17:40:20,003 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:40:20,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:40:20,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1842790037, now seen corresponding path program 151 times
[2022-01-31 17:40:20,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:40:20,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563511174]
[2022-01-31 17:40:20,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:40:20,004 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:40:20,004 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:40:20,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:40:20,016 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:40:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:40:25,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:40:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:40:25,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:40:25,820 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:40:25,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563511174]
[2022-01-31 17:40:25,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [563511174] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:40:25,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:40:25,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [155] imperfect sequences [] total 155
[2022-01-31 17:40:25,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983771800]
[2022-01-31 17:40:25,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:40:25,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 155 states
[2022-01-31 17:40:25,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:40:25,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants.
[2022-01-31 17:40:25,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11783, Invalid=12087, Unknown=0, NotChecked=0, Total=23870
[2022-01-31 17:40:25,824 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand has 155 states, 155 states have (on average 1.032258064516129) internal successors, (160), 154 states have internal predecessors, (160), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:40:32,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:40:32,438 INFO L93 Difference]: Finished difference Result 181 states and 183 transitions.
[2022-01-31 17:40:32,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states.
[2022-01-31 17:40:32,439 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 155 states have (on average 1.032258064516129) internal successors, (160), 154 states have internal predecessors, (160), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 164
[2022-01-31 17:40:32,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:40:32,439 INFO L225 Difference]: With dead ends: 181
[2022-01-31 17:40:32,439 INFO L226 Difference]: Without dead ends: 170
[2022-01-31 17:40:32,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11627 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=35343, Invalid=58599, Unknown=0, NotChecked=0, Total=93942
[2022-01-31 17:40:32,443 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:40:32,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:40:32,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states.
[2022-01-31 17:40:32,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170.
[2022-01-31 17:40:32,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 164 states have (on average 1.0121951219512195) internal successors, (166), 164 states have internal predecessors, (166), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:40:32,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 171 transitions.
[2022-01-31 17:40:32,446 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 171 transitions. Word has length 164
[2022-01-31 17:40:32,447 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:40:32,447 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 171 transitions.
[2022-01-31 17:40:32,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 155 states have (on average 1.032258064516129) internal successors, (160), 154 states have internal predecessors, (160), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:40:32,447 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 171 transitions.
[2022-01-31 17:40:32,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166
[2022-01-31 17:40:32,447 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:40:32,447 INFO L514 BasicCegarLoop]: trace histogram [152, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:40:32,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152
[2022-01-31 17:40:32,447 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:40:32,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:40:32,448 INFO L85 PathProgramCache]: Analyzing trace with hash 910929631, now seen corresponding path program 152 times
[2022-01-31 17:40:32,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:40:32,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434163568]
[2022-01-31 17:40:32,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:40:32,448 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:40:32,448 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:40:32,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:40:32,460 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:40:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:40:38,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:40:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:40:38,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:40:38,855 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:40:38,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434163568]
[2022-01-31 17:40:38,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [434163568] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:40:38,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:40:38,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [156] imperfect sequences [] total 156
[2022-01-31 17:40:38,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178340750]
[2022-01-31 17:40:38,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:40:38,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 156 states
[2022-01-31 17:40:38,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:40:38,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants.
[2022-01-31 17:40:38,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11937, Invalid=12243, Unknown=0, NotChecked=0, Total=24180
[2022-01-31 17:40:38,859 INFO L87 Difference]: Start difference. First operand 170 states and 171 transitions. Second operand has 156 states, 156 states have (on average 1.0320512820512822) internal successors, (161), 155 states have internal predecessors, (161), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:40:44,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:40:44,499 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions.
[2022-01-31 17:40:44,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states.
[2022-01-31 17:40:44,499 INFO L78 Accepts]: Start accepts. Automaton has has 156 states, 156 states have (on average 1.0320512820512822) internal successors, (161), 155 states have internal predecessors, (161), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 165
[2022-01-31 17:40:44,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:40:44,499 INFO L225 Difference]: With dead ends: 182
[2022-01-31 17:40:44,499 INFO L226 Difference]: Without dead ends: 171
[2022-01-31 17:40:44,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11780 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=35805, Invalid=59367, Unknown=0, NotChecked=0, Total=95172
[2022-01-31 17:40:44,503 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:40:44,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 64 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:40:44,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states.
[2022-01-31 17:40:44,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171.
[2022-01-31 17:40:44,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 165 states have (on average 1.0121212121212122) internal successors, (167), 165 states have internal predecessors, (167), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:40:44,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions.
[2022-01-31 17:40:44,506 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 165
[2022-01-31 17:40:44,506 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:40:44,506 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions.
[2022-01-31 17:40:44,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 156 states, 156 states have (on average 1.0320512820512822) internal successors, (161), 155 states have internal predecessors, (161), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:40:44,506 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions.
[2022-01-31 17:40:44,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167
[2022-01-31 17:40:44,507 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:40:44,507 INFO L514 BasicCegarLoop]: trace histogram [153, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:40:44,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153
[2022-01-31 17:40:44,507 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:40:44,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:40:44,507 INFO L85 PathProgramCache]: Analyzing trace with hash 376893419, now seen corresponding path program 153 times
[2022-01-31 17:40:44,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:40:44,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643061199]
[2022-01-31 17:40:44,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:40:44,508 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:40:44,508 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:40:44,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:40:44,520 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:40:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:40:50,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:40:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:40:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:40:50,342 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:40:50,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643061199]
[2022-01-31 17:40:50,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [643061199] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:40:50,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:40:50,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [157] imperfect sequences [] total 157
[2022-01-31 17:40:50,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068755433]
[2022-01-31 17:40:50,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:40:50,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 157 states
[2022-01-31 17:40:50,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:40:50,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants.
[2022-01-31 17:40:50,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12092, Invalid=12400, Unknown=0, NotChecked=0, Total=24492
[2022-01-31 17:40:50,345 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand has 157 states, 157 states have (on average 1.0318471337579618) internal successors, (162), 156 states have internal predecessors, (162), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:40:57,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:40:57,318 INFO L93 Difference]: Finished difference Result 183 states and 185 transitions.
[2022-01-31 17:40:57,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states.
[2022-01-31 17:40:57,318 INFO L78 Accepts]: Start accepts. Automaton has has 157 states, 157 states have (on average 1.0318471337579618) internal successors, (162), 156 states have internal predecessors, (162), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 166
[2022-01-31 17:40:57,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:40:57,318 INFO L225 Difference]: With dead ends: 183
[2022-01-31 17:40:57,318 INFO L226 Difference]: Without dead ends: 172
[2022-01-31 17:40:57,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 309 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11934 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=36270, Invalid=60140, Unknown=0, NotChecked=0, Total=96410
[2022-01-31 17:40:57,322 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:40:57,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:40:57,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states.
[2022-01-31 17:40:57,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172.
[2022-01-31 17:40:57,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 166 states have (on average 1.0120481927710843) internal successors, (168), 166 states have internal predecessors, (168), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:40:57,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 173 transitions.
[2022-01-31 17:40:57,329 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 173 transitions. Word has length 166
[2022-01-31 17:40:57,329 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:40:57,329 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 173 transitions.
[2022-01-31 17:40:57,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 157 states, 157 states have (on average 1.0318471337579618) internal successors, (162), 156 states have internal predecessors, (162), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:40:57,329 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 173 transitions.
[2022-01-31 17:40:57,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168
[2022-01-31 17:40:57,330 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:40:57,330 INFO L514 BasicCegarLoop]: trace histogram [154, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:40:57,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154
[2022-01-31 17:40:57,330 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:40:57,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:40:57,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1001640031, now seen corresponding path program 154 times
[2022-01-31 17:40:57,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:40:57,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060772211]
[2022-01-31 17:40:57,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:40:57,331 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:40:57,331 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:40:57,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:40:57,342 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:40:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:41:03,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:41:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:41:03,035 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 17:41:03,035 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:41:03,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060772211]
[2022-01-31 17:41:03,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1060772211] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:41:03,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:41:03,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [158] imperfect sequences [] total 158
[2022-01-31 17:41:03,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130989098]
[2022-01-31 17:41:03,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:41:03,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 158 states
[2022-01-31 17:41:03,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:41:03,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants.
[2022-01-31 17:41:03,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12248, Invalid=12558, Unknown=0, NotChecked=0, Total=24806
[2022-01-31 17:41:03,039 INFO L87 Difference]: Start difference. First operand 172 states and 173 transitions. Second operand has 158 states, 158 states have (on average 1.0316455696202531) internal successors, (163), 157 states have internal predecessors, (163), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:41:08,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:41:08,720 INFO L93 Difference]: Finished difference Result 184 states and 186 transitions.
[2022-01-31 17:41:08,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states.
[2022-01-31 17:41:08,720 INFO L78 Accepts]: Start accepts. Automaton has has 158 states, 158 states have (on average 1.0316455696202531) internal successors, (163), 157 states have internal predecessors, (163), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 167
[2022-01-31 17:41:08,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:41:08,720 INFO L225 Difference]: With dead ends: 184
[2022-01-31 17:41:08,720 INFO L226 Difference]: Without dead ends: 173
[2022-01-31 17:41:08,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12089 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=36738, Invalid=60918, Unknown=0, NotChecked=0, Total=97656
[2022-01-31 17:41:08,724 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:41:08,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:41:08,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states.
[2022-01-31 17:41:08,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173.
[2022-01-31 17:41:08,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 167 states have (on average 1.0119760479041917) internal successors, (169), 167 states have internal predecessors, (169), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:41:08,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions.
[2022-01-31 17:41:08,728 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 167
[2022-01-31 17:41:08,728 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:41:08,728 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions.
[2022-01-31 17:41:08,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 158 states have (on average 1.0316455696202531) internal successors, (163), 157 states have internal predecessors, (163), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:41:08,728 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions.
[2022-01-31 17:41:08,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169
[2022-01-31 17:41:08,728 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:41:08,728 INFO L514 BasicCegarLoop]: trace histogram [155, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:41:08,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155
[2022-01-31 17:41:08,729 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:41:08,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:41:08,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1106051477, now seen corresponding path program 155 times
[2022-01-31 17:41:08,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:41:08,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150847760]
[2022-01-31 17:41:08,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:41:08,729 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:41:08,729 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:41:08,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:41:08,741 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:41:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:41:13,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:41:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:41:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:41:13,605 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:41:13,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150847760]
[2022-01-31 17:41:13,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [150847760] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:41:13,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:41:13,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [159] imperfect sequences [] total 159
[2022-01-31 17:41:13,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386011456]
[2022-01-31 17:41:13,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:41:13,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 159 states
[2022-01-31 17:41:13,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:41:13,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants.
[2022-01-31 17:41:13,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12405, Invalid=12717, Unknown=0, NotChecked=0, Total=25122
[2022-01-31 17:41:13,609 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand has 159 states, 159 states have (on average 1.0314465408805031) internal successors, (164), 158 states have internal predecessors, (164), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:41:19,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:41:19,852 INFO L93 Difference]: Finished difference Result 185 states and 187 transitions.
[2022-01-31 17:41:19,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states.
[2022-01-31 17:41:19,853 INFO L78 Accepts]: Start accepts. Automaton has has 159 states, 159 states have (on average 1.0314465408805031) internal successors, (164), 158 states have internal predecessors, (164), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 168
[2022-01-31 17:41:19,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:41:19,853 INFO L225 Difference]: With dead ends: 185
[2022-01-31 17:41:19,853 INFO L226 Difference]: Without dead ends: 174
[2022-01-31 17:41:19,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12245 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=37209, Invalid=61701, Unknown=0, NotChecked=0, Total=98910
[2022-01-31 17:41:19,857 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:41:19,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:41:19,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states.
[2022-01-31 17:41:19,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174.
[2022-01-31 17:41:19,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 168 states have (on average 1.0119047619047619) internal successors, (170), 168 states have internal predecessors, (170), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:41:19,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 175 transitions.
[2022-01-31 17:41:19,860 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 175 transitions. Word has length 168
[2022-01-31 17:41:19,860 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:41:19,860 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 175 transitions.
[2022-01-31 17:41:19,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 159 states, 159 states have (on average 1.0314465408805031) internal successors, (164), 158 states have internal predecessors, (164), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:41:19,860 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 175 transitions.
[2022-01-31 17:41:19,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170
[2022-01-31 17:41:19,861 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:41:19,861 INFO L514 BasicCegarLoop]: trace histogram [156, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:41:19,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156
[2022-01-31 17:41:19,861 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:41:19,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:41:19,861 INFO L85 PathProgramCache]: Analyzing trace with hash -2019978785, now seen corresponding path program 156 times
[2022-01-31 17:41:19,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:41:19,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803124171]
[2022-01-31 17:41:19,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:41:19,862 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:41:19,862 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:41:19,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:41:19,874 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:41:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:41:24,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:41:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:41:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:41:24,969 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:41:24,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803124171]
[2022-01-31 17:41:24,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [803124171] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:41:24,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:41:24,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [160] imperfect sequences [] total 160
[2022-01-31 17:41:24,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399515690]
[2022-01-31 17:41:24,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:41:24,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 160 states
[2022-01-31 17:41:24,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:41:24,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants.
[2022-01-31 17:41:24,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12563, Invalid=12877, Unknown=0, NotChecked=0, Total=25440
[2022-01-31 17:41:24,973 INFO L87 Difference]: Start difference. First operand 174 states and 175 transitions. Second operand has 160 states, 160 states have (on average 1.03125) internal successors, (165), 159 states have internal predecessors, (165), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:41:31,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:41:31,083 INFO L93 Difference]: Finished difference Result 186 states and 188 transitions.
[2022-01-31 17:41:31,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states.
[2022-01-31 17:41:31,083 INFO L78 Accepts]: Start accepts. Automaton has has 160 states, 160 states have (on average 1.03125) internal successors, (165), 159 states have internal predecessors, (165), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 169
[2022-01-31 17:41:31,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:41:31,083 INFO L225 Difference]: With dead ends: 186
[2022-01-31 17:41:31,083 INFO L226 Difference]: Without dead ends: 175
[2022-01-31 17:41:31,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12402 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=37683, Invalid=62489, Unknown=0, NotChecked=0, Total=100172
[2022-01-31 17:41:31,087 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:41:31,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:41:31,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states.
[2022-01-31 17:41:31,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175.
[2022-01-31 17:41:31,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 169 states have (on average 1.0118343195266273) internal successors, (171), 169 states have internal predecessors, (171), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:41:31,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions.
[2022-01-31 17:41:31,091 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 169
[2022-01-31 17:41:31,091 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:41:31,091 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions.
[2022-01-31 17:41:31,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 160 states, 160 states have (on average 1.03125) internal successors, (165), 159 states have internal predecessors, (165), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:41:31,091 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions.
[2022-01-31 17:41:31,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171
[2022-01-31 17:41:31,091 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:41:31,091 INFO L514 BasicCegarLoop]: trace histogram [157, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:41:31,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157
[2022-01-31 17:41:31,091 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:41:31,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:41:31,092 INFO L85 PathProgramCache]: Analyzing trace with hash -286954261, now seen corresponding path program 157 times
[2022-01-31 17:41:31,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:41:31,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663472694]
[2022-01-31 17:41:31,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:41:31,092 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:41:31,092 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:41:31,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:41:31,105 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:41:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:41:35,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:41:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:41:35,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:41:35,868 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:41:35,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663472694]
[2022-01-31 17:41:35,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [663472694] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:41:35,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:41:35,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [161] imperfect sequences [] total 161
[2022-01-31 17:41:35,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081005543]
[2022-01-31 17:41:35,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:41:35,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 161 states
[2022-01-31 17:41:35,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:41:35,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants.
[2022-01-31 17:41:35,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12722, Invalid=13038, Unknown=0, NotChecked=0, Total=25760
[2022-01-31 17:41:35,871 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand has 161 states, 161 states have (on average 1.031055900621118) internal successors, (166), 160 states have internal predecessors, (166), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:41:41,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:41:41,567 INFO L93 Difference]: Finished difference Result 187 states and 189 transitions.
[2022-01-31 17:41:41,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states.
[2022-01-31 17:41:41,567 INFO L78 Accepts]: Start accepts. Automaton has has 161 states, 161 states have (on average 1.031055900621118) internal successors, (166), 160 states have internal predecessors, (166), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 170
[2022-01-31 17:41:41,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:41:41,568 INFO L225 Difference]: With dead ends: 187
[2022-01-31 17:41:41,568 INFO L226 Difference]: Without dead ends: 176
[2022-01-31 17:41:41,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 317 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12560 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=38160, Invalid=63282, Unknown=0, NotChecked=0, Total=101442
[2022-01-31 17:41:41,571 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:41:41,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:41:41,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states.
[2022-01-31 17:41:41,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176.
[2022-01-31 17:41:41,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 170 states have (on average 1.011764705882353) internal successors, (172), 170 states have internal predecessors, (172), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:41:41,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions.
[2022-01-31 17:41:41,574 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 170
[2022-01-31 17:41:41,575 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:41:41,575 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions.
[2022-01-31 17:41:41,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 161 states, 161 states have (on average 1.031055900621118) internal successors, (166), 160 states have internal predecessors, (166), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:41:41,575 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions.
[2022-01-31 17:41:41,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172
[2022-01-31 17:41:41,575 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:41:41,575 INFO L514 BasicCegarLoop]: trace histogram [158, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:41:41,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158
[2022-01-31 17:41:41,575 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:41:41,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:41:41,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1897198431, now seen corresponding path program 158 times
[2022-01-31 17:41:41,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:41:41,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830055921]
[2022-01-31 17:41:41,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:41:41,576 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:41:41,576 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:41:41,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:41:41,589 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:41:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:41:46,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:41:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:41:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:41:46,303 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:41:46,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830055921]
[2022-01-31 17:41:46,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [830055921] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:41:46,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:41:46,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [162] imperfect sequences [] total 162
[2022-01-31 17:41:46,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303362274]
[2022-01-31 17:41:46,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:41:46,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 162 states
[2022-01-31 17:41:46,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:41:46,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants.
[2022-01-31 17:41:46,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12882, Invalid=13200, Unknown=0, NotChecked=0, Total=26082
[2022-01-31 17:41:46,307 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 162 states, 162 states have (on average 1.0308641975308641) internal successors, (167), 161 states have internal predecessors, (167), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:41:52,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:41:52,237 INFO L93 Difference]: Finished difference Result 188 states and 190 transitions.
[2022-01-31 17:41:52,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states.
[2022-01-31 17:41:52,238 INFO L78 Accepts]: Start accepts. Automaton has has 162 states, 162 states have (on average 1.0308641975308641) internal successors, (167), 161 states have internal predecessors, (167), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 171
[2022-01-31 17:41:52,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:41:52,238 INFO L225 Difference]: With dead ends: 188
[2022-01-31 17:41:52,238 INFO L226 Difference]: Without dead ends: 177
[2022-01-31 17:41:52,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12719 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=38640, Invalid=64080, Unknown=0, NotChecked=0, Total=102720
[2022-01-31 17:41:52,243 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:41:52,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:41:52,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states.
[2022-01-31 17:41:52,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177.
[2022-01-31 17:41:52,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 171 states have (on average 1.0116959064327486) internal successors, (173), 171 states have internal predecessors, (173), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:41:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions.
[2022-01-31 17:41:52,246 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 171
[2022-01-31 17:41:52,246 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:41:52,246 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions.
[2022-01-31 17:41:52,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 162 states, 162 states have (on average 1.0308641975308641) internal successors, (167), 161 states have internal predecessors, (167), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:41:52,247 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions.
[2022-01-31 17:41:52,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173
[2022-01-31 17:41:52,247 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:41:52,247 INFO L514 BasicCegarLoop]: trace histogram [159, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:41:52,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159
[2022-01-31 17:41:52,247 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:41:52,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:41:52,247 INFO L85 PathProgramCache]: Analyzing trace with hash 886455147, now seen corresponding path program 159 times
[2022-01-31 17:41:52,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:41:52,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960913828]
[2022-01-31 17:41:52,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:41:52,248 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:41:52,248 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:41:52,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:41:52,261 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:41:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:41:57,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:41:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:41:57,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:41:57,042 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:41:57,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960913828]
[2022-01-31 17:41:57,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1960913828] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:41:57,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:41:57,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [163] imperfect sequences [] total 163
[2022-01-31 17:41:57,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714138602]
[2022-01-31 17:41:57,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:41:57,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 163 states
[2022-01-31 17:41:57,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:41:57,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants.
[2022-01-31 17:41:57,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13043, Invalid=13363, Unknown=0, NotChecked=0, Total=26406
[2022-01-31 17:41:57,046 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand has 163 states, 163 states have (on average 1.030674846625767) internal successors, (168), 162 states have internal predecessors, (168), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:42:03,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:42:03,215 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions.
[2022-01-31 17:42:03,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states.
[2022-01-31 17:42:03,215 INFO L78 Accepts]: Start accepts. Automaton has has 163 states, 163 states have (on average 1.030674846625767) internal successors, (168), 162 states have internal predecessors, (168), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 172
[2022-01-31 17:42:03,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:42:03,215 INFO L225 Difference]: With dead ends: 189
[2022-01-31 17:42:03,216 INFO L226 Difference]: Without dead ends: 178
[2022-01-31 17:42:03,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12879 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=39123, Invalid=64883, Unknown=0, NotChecked=0, Total=104006
[2022-01-31 17:42:03,219 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:42:03,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:42:03,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states.
[2022-01-31 17:42:03,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178.
[2022-01-31 17:42:03,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 172 states have internal predecessors, (174), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:42:03,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 179 transitions.
[2022-01-31 17:42:03,224 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 179 transitions. Word has length 172
[2022-01-31 17:42:03,225 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:42:03,225 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 179 transitions.
[2022-01-31 17:42:03,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 163 states, 163 states have (on average 1.030674846625767) internal successors, (168), 162 states have internal predecessors, (168), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:42:03,225 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 179 transitions.
[2022-01-31 17:42:03,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174
[2022-01-31 17:42:03,225 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:42:03,225 INFO L514 BasicCegarLoop]: trace histogram [160, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:42:03,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160
[2022-01-31 17:42:03,225 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:42:03,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:42:03,226 INFO L85 PathProgramCache]: Analyzing trace with hash -381815585, now seen corresponding path program 160 times
[2022-01-31 17:42:03,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:42:03,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996194686]
[2022-01-31 17:42:03,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:42:03,226 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:42:03,226 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:42:03,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:42:03,239 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:42:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:42:09,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:42:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:42:09,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:42:09,307 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:42:09,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996194686]
[2022-01-31 17:42:09,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [996194686] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:42:09,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:42:09,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [164] imperfect sequences [] total 164
[2022-01-31 17:42:09,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864793479]
[2022-01-31 17:42:09,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:42:09,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 164 states
[2022-01-31 17:42:09,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:42:09,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants.
[2022-01-31 17:42:09,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13205, Invalid=13527, Unknown=0, NotChecked=0, Total=26732
[2022-01-31 17:42:09,310 INFO L87 Difference]: Start difference. First operand 178 states and 179 transitions. Second operand has 164 states, 164 states have (on average 1.0304878048780488) internal successors, (169), 163 states have internal predecessors, (169), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:42:15,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:42:15,180 INFO L93 Difference]: Finished difference Result 190 states and 192 transitions.
[2022-01-31 17:42:15,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states.
[2022-01-31 17:42:15,181 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 164 states have (on average 1.0304878048780488) internal successors, (169), 163 states have internal predecessors, (169), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 173
[2022-01-31 17:42:15,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:42:15,181 INFO L225 Difference]: With dead ends: 190
[2022-01-31 17:42:15,181 INFO L226 Difference]: Without dead ends: 179
[2022-01-31 17:42:15,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13040 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=39609, Invalid=65691, Unknown=0, NotChecked=0, Total=105300
[2022-01-31 17:42:15,185 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:42:15,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:42:15,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states.
[2022-01-31 17:42:15,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179.
[2022-01-31 17:42:15,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 173 states have (on average 1.0115606936416186) internal successors, (175), 173 states have internal predecessors, (175), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:42:15,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions.
[2022-01-31 17:42:15,188 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 173
[2022-01-31 17:42:15,188 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:42:15,189 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions.
[2022-01-31 17:42:15,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 164 states have (on average 1.0304878048780488) internal successors, (169), 163 states have internal predecessors, (169), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:42:15,189 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions.
[2022-01-31 17:42:15,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175
[2022-01-31 17:42:15,189 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:42:15,189 INFO L514 BasicCegarLoop]: trace histogram [161, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:42:15,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161
[2022-01-31 17:42:15,189 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:42:15,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:42:15,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1043502613, now seen corresponding path program 161 times
[2022-01-31 17:42:15,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:42:15,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241344146]
[2022-01-31 17:42:15,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:42:15,190 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:42:15,190 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:42:15,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:42:15,203 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:42:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:42:20,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:42:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:42:20,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:42:20,047 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:42:20,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241344146]
[2022-01-31 17:42:20,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [241344146] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:42:20,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:42:20,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [165] imperfect sequences [] total 165
[2022-01-31 17:42:20,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045724073]
[2022-01-31 17:42:20,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:42:20,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 165 states
[2022-01-31 17:42:20,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:42:20,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants.
[2022-01-31 17:42:20,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13368, Invalid=13692, Unknown=0, NotChecked=0, Total=27060
[2022-01-31 17:42:20,051 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand has 165 states, 165 states have (on average 1.0303030303030303) internal successors, (170), 164 states have internal predecessors, (170), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:42:27,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:42:27,029 INFO L93 Difference]: Finished difference Result 191 states and 193 transitions.
[2022-01-31 17:42:27,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states.
[2022-01-31 17:42:27,030 INFO L78 Accepts]: Start accepts. Automaton has has 165 states, 165 states have (on average 1.0303030303030303) internal successors, (170), 164 states have internal predecessors, (170), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 174
[2022-01-31 17:42:27,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:42:27,030 INFO L225 Difference]: With dead ends: 191
[2022-01-31 17:42:27,030 INFO L226 Difference]: Without dead ends: 180
[2022-01-31 17:42:27,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13202 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=40098, Invalid=66504, Unknown=0, NotChecked=0, Total=106602
[2022-01-31 17:42:27,034 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:42:27,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:42:27,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states.
[2022-01-31 17:42:27,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180.
[2022-01-31 17:42:27,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 174 states have (on average 1.0114942528735633) internal successors, (176), 174 states have internal predecessors, (176), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:42:27,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 181 transitions.
[2022-01-31 17:42:27,039 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 181 transitions. Word has length 174
[2022-01-31 17:42:27,039 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:42:27,039 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 181 transitions.
[2022-01-31 17:42:27,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 165 states, 165 states have (on average 1.0303030303030303) internal successors, (170), 164 states have internal predecessors, (170), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:42:27,039 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 181 transitions.
[2022-01-31 17:42:27,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176
[2022-01-31 17:42:27,040 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:42:27,040 INFO L514 BasicCegarLoop]: trace histogram [162, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:42:27,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162
[2022-01-31 17:42:27,040 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:42:27,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:42:27,040 INFO L85 PathProgramCache]: Analyzing trace with hash -80964001, now seen corresponding path program 162 times
[2022-01-31 17:42:27,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:42:27,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349731112]
[2022-01-31 17:42:27,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:42:27,041 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:42:27,041 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:42:27,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:42:27,055 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:42:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:42:31,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:42:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:42:31,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:42:31,934 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:42:31,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349731112]
[2022-01-31 17:42:31,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [349731112] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:42:31,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:42:31,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [166] imperfect sequences [] total 166
[2022-01-31 17:42:31,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240224768]
[2022-01-31 17:42:31,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:42:31,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 166 states
[2022-01-31 17:42:31,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:42:31,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants.
[2022-01-31 17:42:31,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13532, Invalid=13858, Unknown=0, NotChecked=0, Total=27390
[2022-01-31 17:42:31,938 INFO L87 Difference]: Start difference. First operand 180 states and 181 transitions. Second operand has 166 states, 166 states have (on average 1.0301204819277108) internal successors, (171), 165 states have internal predecessors, (171), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:42:37,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:42:37,942 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions.
[2022-01-31 17:42:37,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states.
[2022-01-31 17:42:37,942 INFO L78 Accepts]: Start accepts. Automaton has has 166 states, 166 states have (on average 1.0301204819277108) internal successors, (171), 165 states have internal predecessors, (171), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 175
[2022-01-31 17:42:37,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:42:37,943 INFO L225 Difference]: With dead ends: 192
[2022-01-31 17:42:37,943 INFO L226 Difference]: Without dead ends: 181
[2022-01-31 17:42:37,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13365 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=40590, Invalid=67322, Unknown=0, NotChecked=0, Total=107912
[2022-01-31 17:42:37,947 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:42:37,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:42:37,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states.
[2022-01-31 17:42:37,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181.
[2022-01-31 17:42:37,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 175 states have (on average 1.0114285714285713) internal successors, (177), 175 states have internal predecessors, (177), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:42:37,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions.
[2022-01-31 17:42:37,951 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 175
[2022-01-31 17:42:37,951 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:42:37,951 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions.
[2022-01-31 17:42:37,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 166 states, 166 states have (on average 1.0301204819277108) internal successors, (171), 165 states have internal predecessors, (171), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:42:37,951 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions.
[2022-01-31 17:42:37,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177
[2022-01-31 17:42:37,952 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:42:37,952 INFO L514 BasicCegarLoop]: trace histogram [163, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:42:37,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163
[2022-01-31 17:42:37,952 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:42:37,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:42:37,952 INFO L85 PathProgramCache]: Analyzing trace with hash -307038101, now seen corresponding path program 163 times
[2022-01-31 17:42:37,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:42:37,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714807669]
[2022-01-31 17:42:37,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:42:37,953 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:42:37,953 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:42:37,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:42:37,966 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:42:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:42:43,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:42:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:42:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:42:43,262 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:42:43,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714807669]
[2022-01-31 17:42:43,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1714807669] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:42:43,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:42:43,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [167] imperfect sequences [] total 167
[2022-01-31 17:42:43,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642865785]
[2022-01-31 17:42:43,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:42:43,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 167 states
[2022-01-31 17:42:43,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:42:43,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants.
[2022-01-31 17:42:43,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13697, Invalid=14025, Unknown=0, NotChecked=0, Total=27722
[2022-01-31 17:42:43,265 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand has 167 states, 167 states have (on average 1.029940119760479) internal successors, (172), 166 states have internal predecessors, (172), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:42:49,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:42:49,244 INFO L93 Difference]: Finished difference Result 193 states and 195 transitions.
[2022-01-31 17:42:49,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states.
[2022-01-31 17:42:49,244 INFO L78 Accepts]: Start accepts. Automaton has has 167 states, 167 states have (on average 1.029940119760479) internal successors, (172), 166 states have internal predecessors, (172), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 176
[2022-01-31 17:42:49,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:42:49,245 INFO L225 Difference]: With dead ends: 193
[2022-01-31 17:42:49,245 INFO L226 Difference]: Without dead ends: 182
[2022-01-31 17:42:49,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 329 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13529 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=41085, Invalid=68145, Unknown=0, NotChecked=0, Total=109230
[2022-01-31 17:42:49,248 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:42:49,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:42:49,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states.
[2022-01-31 17:42:49,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182.
[2022-01-31 17:42:49,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 176 states have (on average 1.0113636363636365) internal successors, (178), 176 states have internal predecessors, (178), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:42:49,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 183 transitions.
[2022-01-31 17:42:49,252 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 183 transitions. Word has length 176
[2022-01-31 17:42:49,252 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:42:49,252 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 183 transitions.
[2022-01-31 17:42:49,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 167 states, 167 states have (on average 1.029940119760479) internal successors, (172), 166 states have internal predecessors, (172), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:42:49,252 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 183 transitions.
[2022-01-31 17:42:49,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178
[2022-01-31 17:42:49,253 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:42:49,253 INFO L514 BasicCegarLoop]: trace histogram [164, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:42:49,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164
[2022-01-31 17:42:49,253 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:42:49,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:42:49,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1274599391, now seen corresponding path program 164 times
[2022-01-31 17:42:49,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:42:49,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841304428]
[2022-01-31 17:42:49,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:42:49,254 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:42:49,254 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:42:49,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:42:49,267 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:42:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:42:54,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:42:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:42:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:42:54,375 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:42:54,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841304428]
[2022-01-31 17:42:54,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1841304428] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:42:54,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:42:54,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [168] imperfect sequences [] total 168
[2022-01-31 17:42:54,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924066432]
[2022-01-31 17:42:54,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:42:54,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 168 states
[2022-01-31 17:42:54,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:42:54,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants.
[2022-01-31 17:42:54,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13863, Invalid=14193, Unknown=0, NotChecked=0, Total=28056
[2022-01-31 17:42:54,378 INFO L87 Difference]: Start difference. First operand 182 states and 183 transitions. Second operand has 168 states, 168 states have (on average 1.0297619047619047) internal successors, (173), 167 states have internal predecessors, (173), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:43:00,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:43:00,555 INFO L93 Difference]: Finished difference Result 194 states and 196 transitions.
[2022-01-31 17:43:00,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states.
[2022-01-31 17:43:00,555 INFO L78 Accepts]: Start accepts. Automaton has has 168 states, 168 states have (on average 1.0297619047619047) internal successors, (173), 167 states have internal predecessors, (173), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 177
[2022-01-31 17:43:00,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:43:00,556 INFO L225 Difference]: With dead ends: 194
[2022-01-31 17:43:00,556 INFO L226 Difference]: Without dead ends: 183
[2022-01-31 17:43:00,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 331 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13694 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=41583, Invalid=68973, Unknown=0, NotChecked=0, Total=110556
[2022-01-31 17:43:00,561 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:43:00,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:43:00,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states.
[2022-01-31 17:43:00,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183.
[2022-01-31 17:43:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 177 states have (on average 1.0112994350282485) internal successors, (179), 177 states have internal predecessors, (179), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:43:00,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions.
[2022-01-31 17:43:00,566 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 177
[2022-01-31 17:43:00,566 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:43:00,566 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions.
[2022-01-31 17:43:00,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 168 states, 168 states have (on average 1.0297619047619047) internal successors, (173), 167 states have internal predecessors, (173), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:43:00,566 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions.
[2022-01-31 17:43:00,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179
[2022-01-31 17:43:00,567 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:43:00,567 INFO L514 BasicCegarLoop]: trace histogram [165, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:43:00,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165
[2022-01-31 17:43:00,567 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:43:00,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:43:00,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1234245909, now seen corresponding path program 165 times
[2022-01-31 17:43:00,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:43:00,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192463856]
[2022-01-31 17:43:00,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:43:00,568 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:43:00,568 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:43:00,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:43:00,582 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:43:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:43:08,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:43:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:43:08,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:43:08,948 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:43:08,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192463856]
[2022-01-31 17:43:08,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1192463856] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:43:08,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:43:08,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [169] imperfect sequences [] total 169
[2022-01-31 17:43:08,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304383423]
[2022-01-31 17:43:08,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:43:08,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 169 states
[2022-01-31 17:43:08,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:43:08,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants.
[2022-01-31 17:43:08,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14030, Invalid=14362, Unknown=0, NotChecked=0, Total=28392
[2022-01-31 17:43:08,952 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand has 169 states, 169 states have (on average 1.029585798816568) internal successors, (174), 168 states have internal predecessors, (174), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:43:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:43:15,186 INFO L93 Difference]: Finished difference Result 195 states and 197 transitions.
[2022-01-31 17:43:15,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states.
[2022-01-31 17:43:15,186 INFO L78 Accepts]: Start accepts. Automaton has has 169 states, 169 states have (on average 1.029585798816568) internal successors, (174), 168 states have internal predecessors, (174), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 178
[2022-01-31 17:43:15,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:43:15,186 INFO L225 Difference]: With dead ends: 195
[2022-01-31 17:43:15,186 INFO L226 Difference]: Without dead ends: 184
[2022-01-31 17:43:15,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13860 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=42084, Invalid=69806, Unknown=0, NotChecked=0, Total=111890
[2022-01-31 17:43:15,190 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:43:15,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:43:15,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states.
[2022-01-31 17:43:15,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184.
[2022-01-31 17:43:15,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 178 states have (on average 1.0112359550561798) internal successors, (180), 178 states have internal predecessors, (180), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:43:15,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions.
[2022-01-31 17:43:15,195 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 178
[2022-01-31 17:43:15,196 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:43:15,196 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions.
[2022-01-31 17:43:15,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 169 states, 169 states have (on average 1.029585798816568) internal successors, (174), 168 states have internal predecessors, (174), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:43:15,196 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions.
[2022-01-31 17:43:15,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180
[2022-01-31 17:43:15,196 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:43:15,196 INFO L514 BasicCegarLoop]: trace histogram [166, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:43:15,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166
[2022-01-31 17:43:15,196 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:43:15,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:43:15,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1699038881, now seen corresponding path program 166 times
[2022-01-31 17:43:15,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:43:15,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202099815]
[2022-01-31 17:43:15,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:43:15,197 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:43:15,197 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:43:15,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:43:15,210 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:43:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:43:22,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:43:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:43:22,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:43:22,281 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:43:22,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202099815]
[2022-01-31 17:43:22,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1202099815] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:43:22,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:43:22,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [170] imperfect sequences [] total 170
[2022-01-31 17:43:22,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847146432]
[2022-01-31 17:43:22,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:43:22,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 170 states
[2022-01-31 17:43:22,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:43:22,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants.
[2022-01-31 17:43:22,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14198, Invalid=14532, Unknown=0, NotChecked=0, Total=28730
[2022-01-31 17:43:22,285 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand has 170 states, 170 states have (on average 1.0294117647058822) internal successors, (175), 169 states have internal predecessors, (175), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:43:30,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:43:30,251 INFO L93 Difference]: Finished difference Result 196 states and 198 transitions.
[2022-01-31 17:43:30,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states.
[2022-01-31 17:43:30,251 INFO L78 Accepts]: Start accepts. Automaton has has 170 states, 170 states have (on average 1.0294117647058822) internal successors, (175), 169 states have internal predecessors, (175), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 179
[2022-01-31 17:43:30,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:43:30,252 INFO L225 Difference]: With dead ends: 196
[2022-01-31 17:43:30,252 INFO L226 Difference]: Without dead ends: 185
[2022-01-31 17:43:30,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 335 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14027 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=42588, Invalid=70644, Unknown=0, NotChecked=0, Total=113232
[2022-01-31 17:43:30,256 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:43:30,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 64 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:43:30,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states.
[2022-01-31 17:43:30,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185.
[2022-01-31 17:43:30,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 179 states have (on average 1.011173184357542) internal successors, (181), 179 states have internal predecessors, (181), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:43:30,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions.
[2022-01-31 17:43:30,259 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 179
[2022-01-31 17:43:30,259 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:43:30,259 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions.
[2022-01-31 17:43:30,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 170 states, 170 states have (on average 1.0294117647058822) internal successors, (175), 169 states have internal predecessors, (175), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:43:30,260 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions.
[2022-01-31 17:43:30,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181
[2022-01-31 17:43:30,260 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:43:30,260 INFO L514 BasicCegarLoop]: trace histogram [167, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:43:30,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167
[2022-01-31 17:43:30,260 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:43:30,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:43:30,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1072248171, now seen corresponding path program 167 times
[2022-01-31 17:43:30,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:43:30,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888113348]
[2022-01-31 17:43:30,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:43:30,261 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:43:30,261 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:43:30,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:43:30,275 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:43:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:43:38,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:43:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:43:38,215 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 17:43:38,215 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:43:38,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888113348]
[2022-01-31 17:43:38,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1888113348] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:43:38,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:43:38,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [171] imperfect sequences [] total 171
[2022-01-31 17:43:38,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617254605]
[2022-01-31 17:43:38,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:43:38,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 171 states
[2022-01-31 17:43:38,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:43:38,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants.
[2022-01-31 17:43:38,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14367, Invalid=14703, Unknown=0, NotChecked=0, Total=29070
[2022-01-31 17:43:38,218 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand has 171 states, 171 states have (on average 1.0292397660818713) internal successors, (176), 170 states have internal predecessors, (176), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:43:44,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:43:44,705 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions.
[2022-01-31 17:43:44,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states.
[2022-01-31 17:43:44,706 INFO L78 Accepts]: Start accepts. Automaton has has 171 states, 171 states have (on average 1.0292397660818713) internal successors, (176), 170 states have internal predecessors, (176), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 180
[2022-01-31 17:43:44,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:43:44,706 INFO L225 Difference]: With dead ends: 197
[2022-01-31 17:43:44,706 INFO L226 Difference]: Without dead ends: 186
[2022-01-31 17:43:44,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 337 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14195 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=43095, Invalid=71487, Unknown=0, NotChecked=0, Total=114582
[2022-01-31 17:43:44,710 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 17:43:44,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 17:43:44,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states.
[2022-01-31 17:43:44,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186.
[2022-01-31 17:43:44,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 180 states have (on average 1.011111111111111) internal successors, (182), 180 states have internal predecessors, (182), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:43:44,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 187 transitions.
[2022-01-31 17:43:44,713 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 187 transitions. Word has length 180
[2022-01-31 17:43:44,713 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:43:44,713 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 187 transitions.
[2022-01-31 17:43:44,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 171 states, 171 states have (on average 1.0292397660818713) internal successors, (176), 170 states have internal predecessors, (176), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:43:44,713 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 187 transitions.
[2022-01-31 17:43:44,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182
[2022-01-31 17:43:44,714 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:43:44,714 INFO L514 BasicCegarLoop]: trace histogram [168, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:43:44,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168
[2022-01-31 17:43:44,714 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:43:44,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:43:44,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1082800863, now seen corresponding path program 168 times
[2022-01-31 17:43:44,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:43:44,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904923759]
[2022-01-31 17:43:44,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:43:44,715 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:43:44,715 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:43:44,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:43:44,728 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:43:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:43:52,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:43:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:43:52,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:43:52,424 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:43:52,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904923759]
[2022-01-31 17:43:52,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1904923759] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:43:52,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:43:52,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [172] imperfect sequences [] total 172
[2022-01-31 17:43:52,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716000469]
[2022-01-31 17:43:52,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:43:52,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 172 states
[2022-01-31 17:43:52,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:43:52,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants.
[2022-01-31 17:43:52,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14537, Invalid=14875, Unknown=0, NotChecked=0, Total=29412
[2022-01-31 17:43:52,427 INFO L87 Difference]: Start difference. First operand 186 states and 187 transitions. Second operand has 172 states, 172 states have (on average 1.0290697674418605) internal successors, (177), 171 states have internal predecessors, (177), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:44:00,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:44:00,641 INFO L93 Difference]: Finished difference Result 198 states and 200 transitions.
[2022-01-31 17:44:00,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states.
[2022-01-31 17:44:00,641 INFO L78 Accepts]: Start accepts. Automaton has has 172 states, 172 states have (on average 1.0290697674418605) internal successors, (177), 171 states have internal predecessors, (177), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 181
[2022-01-31 17:44:00,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:44:00,642 INFO L225 Difference]: With dead ends: 198
[2022-01-31 17:44:00,642 INFO L226 Difference]: Without dead ends: 187
[2022-01-31 17:44:00,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14364 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=43605, Invalid=72335, Unknown=0, NotChecked=0, Total=115940
[2022-01-31 17:44:00,648 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:44:00,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:44:00,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states.
[2022-01-31 17:44:00,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187.
[2022-01-31 17:44:00,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 181 states have (on average 1.011049723756906) internal successors, (183), 181 states have internal predecessors, (183), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:44:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions.
[2022-01-31 17:44:00,653 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 181
[2022-01-31 17:44:00,653 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:44:00,653 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions.
[2022-01-31 17:44:00,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 172 states, 172 states have (on average 1.0290697674418605) internal successors, (177), 171 states have internal predecessors, (177), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:44:00,653 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions.
[2022-01-31 17:44:00,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183
[2022-01-31 17:44:00,653 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:44:00,653 INFO L514 BasicCegarLoop]: trace histogram [169, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:44:00,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169
[2022-01-31 17:44:00,654 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:44:00,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:44:00,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1409934315, now seen corresponding path program 169 times
[2022-01-31 17:44:00,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:44:00,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966572999]
[2022-01-31 17:44:00,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:44:00,655 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:44:00,655 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:44:00,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:44:00,671 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:44:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:44:08,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 17:44:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 17:44:08,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 17:44:08,567 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 17:44:08,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966572999]
[2022-01-31 17:44:08,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [966572999] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 17:44:08,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 17:44:08,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [173] imperfect sequences [] total 173
[2022-01-31 17:44:08,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026863828]
[2022-01-31 17:44:08,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 17:44:08,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 173 states
[2022-01-31 17:44:08,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 17:44:08,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants.
[2022-01-31 17:44:08,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14708, Invalid=15048, Unknown=0, NotChecked=0, Total=29756
[2022-01-31 17:44:08,571 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand has 173 states, 173 states have (on average 1.0289017341040463) internal successors, (178), 172 states have internal predecessors, (178), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:44:15,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 17:44:15,917 INFO L93 Difference]: Finished difference Result 199 states and 201 transitions.
[2022-01-31 17:44:15,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states.
[2022-01-31 17:44:15,918 INFO L78 Accepts]: Start accepts. Automaton has has 173 states, 173 states have (on average 1.0289017341040463) internal successors, (178), 172 states have internal predecessors, (178), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 182
[2022-01-31 17:44:15,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 17:44:15,918 INFO L225 Difference]: With dead ends: 199
[2022-01-31 17:44:15,918 INFO L226 Difference]: Without dead ends: 188
[2022-01-31 17:44:15,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14534 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=44118, Invalid=73188, Unknown=0, NotChecked=0, Total=117306
[2022-01-31 17:44:15,923 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 17:44:15,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 17:44:15,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states.
[2022-01-31 17:44:15,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188.
[2022-01-31 17:44:15,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 182 states have (on average 1.010989010989011) internal successors, (184), 182 states have internal predecessors, (184), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 17:44:15,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 189 transitions.
[2022-01-31 17:44:15,932 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 189 transitions. Word has length 182
[2022-01-31 17:44:15,932 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 17:44:15,932 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 189 transitions.
[2022-01-31 17:44:15,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 173 states, 173 states have (on average 1.0289017341040463) internal successors, (178), 172 states have internal predecessors, (178), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 17:44:15,932 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 189 transitions.
[2022-01-31 17:44:15,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184
[2022-01-31 17:44:15,933 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 17:44:15,933 INFO L514 BasicCegarLoop]: trace histogram [170, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 17:44:15,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170
[2022-01-31 17:44:15,933 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 17:44:15,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 17:44:15,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1333830561, now seen corresponding path program 170 times
[2022-01-31 17:44:15,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 17:44:15,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243278518]
[2022-01-31 17:44:15,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 17:44:15,935 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 17:44:15,935 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 17:44:15,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 17:44:15,949 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 17:44:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat