/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_two_index_08.i
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-d966a43
[2022-01-31 18:09:31,790 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-01-31 18:09:31,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-31 18:09:31,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-31 18:09:31,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-31 18:09:31,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-31 18:09:31,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-31 18:09:31,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-31 18:09:31,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-31 18:09:31,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-31 18:09:31,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-01-31 18:09:31,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-31 18:09:31,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-31 18:09:31,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-31 18:09:31,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-31 18:09:31,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-31 18:09:31,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-31 18:09:31,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-31 18:09:31,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-31 18:09:31,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-31 18:09:31,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-31 18:09:31,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-31 18:09:31,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-01-31 18:09:31,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-31 18:09:31,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-31 18:09:31,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-31 18:09:31,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-31 18:09:31,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-31 18:09:31,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-31 18:09:31,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-31 18:09:31,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-31 18:09:31,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-31 18:09:31,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-31 18:09:31,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-31 18:09:31,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-31 18:09:31,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
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[2022-01-31 18:09:31,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-31 18:09:31,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-01-31 18:09:31,883 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 18:09:31,894 INFO L113 SettingsManager]: Loading preferences was successful
[2022-01-31 18:09:31,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-31 18:09:31,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-31 18:09:31,896 INFO L138 SettingsManager]: * sizeof long=4
[2022-01-31 18:09:31,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-01-31 18:09:31,897 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-01-31 18:09:31,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-01-31 18:09:31,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-01-31 18:09:31,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-31 18:09:31,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-01-31 18:09:31,898 INFO L138 SettingsManager]: * sizeof long double=12
[2022-01-31 18:09:31,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-01-31 18:09:31,898 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-01-31 18:09:31,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-01-31 18:09:31,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-31 18:09:31,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-01-31 18:09:31,903 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-01-31 18:09:31,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-01-31 18:09:31,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-31 18:09:31,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-31 18:09:31,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2022-01-31 18:09:31,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-31 18:09:31,904 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN
[2022-01-31 18:09:31,904 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-31 18:09:32,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-31 18:09:32,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-31 18:09:32,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-31 18:09:32,148 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-01-31 18:09:32,148 INFO L275 PluginConnector]: CDTParser initialized
[2022-01-31 18:09:32,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_two_index_08.i
[2022-01-31 18:09:32,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ae760b53/a28e964248474bc2b715546e1215518b/FLAG9bd7c73e7
[2022-01-31 18:09:32,543 INFO L306 CDTParser]: Found 1 translation units.
[2022-01-31 18:09:32,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_08.i
[2022-01-31 18:09:32,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ae760b53/a28e964248474bc2b715546e1215518b/FLAG9bd7c73e7
[2022-01-31 18:09:32,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ae760b53/a28e964248474bc2b715546e1215518b
[2022-01-31 18:09:32,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-31 18:09:32,980 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2022-01-31 18:09:32,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-31 18:09:32,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-31 18:09:32,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-31 18:09:32,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 06:09:32" (1/1) ...
[2022-01-31 18:09:32,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4311b5d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:09:32, skipping insertion in model container
[2022-01-31 18:09:32,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 06:09:32" (1/1) ...
[2022-01-31 18:09:32,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-01-31 18:09:33,001 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-01-31 18:09:33,103 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_two_index_08.i[814,827]
[2022-01-31 18:09:33,113 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-01-31 18:09:33,119 INFO L203 MainTranslator]: Completed pre-run
[2022-01-31 18:09:33,135 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_two_index_08.i[814,827]
[2022-01-31 18:09:33,140 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-01-31 18:09:33,159 INFO L208 MainTranslator]: Completed translation
[2022-01-31 18:09:33,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:09:33 WrapperNode
[2022-01-31 18:09:33,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-31 18:09:33,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-31 18:09:33,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-31 18:09:33,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-01-31 18:09:33,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:09:33" (1/1) ...
[2022-01-31 18:09:33,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:09:33" (1/1) ...
[2022-01-31 18:09:33,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:09:33" (1/1) ...
[2022-01-31 18:09:33,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:09:33" (1/1) ...
[2022-01-31 18:09:33,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:09:33" (1/1) ...
[2022-01-31 18:09:33,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:09:33" (1/1) ...
[2022-01-31 18:09:33,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:09:33" (1/1) ...
[2022-01-31 18:09:33,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-31 18:09:33,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-31 18:09:33,211 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-01-31 18:09:33,211 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-01-31 18:09:33,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:09:33" (1/1) ...
[2022-01-31 18:09:33,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-31 18:09:33,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-31 18:09:33,245 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 18:09:33,249 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 18:09:33,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-01-31 18:09:33,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-31 18:09:33,276 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-01-31 18:09:33,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-01-31 18:09:33,276 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-01-31 18:09:33,276 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-01-31 18:09:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-01-31 18:09:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2022-01-31 18:09:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure __assert
[2022-01-31 18:09:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-01-31 18:09:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-31 18:09:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-01-31 18:09:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2022-01-31 18:09:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-01-31 18:09:33,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-01-31 18:09:33,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-01-31 18:09:33,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-01-31 18:09:33,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-31 18:09:33,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-01-31 18:09:33,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-01-31 18:09:33,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-31 18:09:33,331 INFO L234 CfgBuilder]: Building ICFG
[2022-01-31 18:09:33,332 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-31 18:09:33,460 INFO L275 CfgBuilder]: Performing block encoding
[2022-01-31 18:09:33,465 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-31 18:09:33,469 INFO L299 CfgBuilder]: Removed 3 assume(true) statements.
[2022-01-31 18:09:33,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 06:09:33 BoogieIcfgContainer
[2022-01-31 18:09:33,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-31 18:09:33,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-31 18:09:33,472 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-01-31 18:09:33,490 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-01-31 18:09:33,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 06:09:32" (1/3) ...
[2022-01-31 18:09:33,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc46a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 06:09:33, skipping insertion in model container
[2022-01-31 18:09:33,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:09:33" (2/3) ...
[2022-01-31 18:09:33,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc46a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 06:09:33, skipping insertion in model container
[2022-01-31 18:09:33,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 06:09:33" (3/3) ...
[2022-01-31 18:09:33,492 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_two_index_08.i
[2022-01-31 18:09:33,497 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2022-01-31 18:09:33,497 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-31 18:09:33,538 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-31 18:09:33,544 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 18:09:33,545 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-31 18:09:33,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-01-31 18:09:33,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-01-31 18:09:33,562 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:33,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:33,563 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:33,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:33,568 INFO L85 PathProgramCache]: Analyzing trace with hash 840989783, now seen corresponding path program 1 times
[2022-01-31 18:09:33,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:33,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796194085]
[2022-01-31 18:09:33,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:33,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:33,620 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:33,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:33,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:33,757 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:33,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796194085]
[2022-01-31 18:09:33,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [796194085] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:33,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:33,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-31 18:09:33,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433881590]
[2022-01-31 18:09:33,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:33,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-31 18:09:33,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:33,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-31 18:09:33,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-31 18:09:33,787 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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 18:09:33,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:33,818 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions.
[2022-01-31 18:09:33,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-01-31 18:09:33,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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 18:09:33,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:33,824 INFO L225 Difference]: With dead ends: 41
[2022-01-31 18:09:33,825 INFO L226 Difference]: Without dead ends: 19
[2022-01-31 18:09:33,827 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 18:09:33,830 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 28 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 18:09:33,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 28 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 18:09:33,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2022-01-31 18:09:33,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2022-01-31 18:09:33,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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 18:09:33,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions.
[2022-01-31 18:09:33,857 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15
[2022-01-31 18:09:33,857 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:33,858 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions.
[2022-01-31 18:09:33,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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 18:09:33,858 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions.
[2022-01-31 18:09:33,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-01-31 18:09:33,859 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:33,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:33,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-31 18:09:33,859 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:33,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:33,860 INFO L85 PathProgramCache]: Analyzing trace with hash -519126957, now seen corresponding path program 1 times
[2022-01-31 18:09:33,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:33,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007263684]
[2022-01-31 18:09:33,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:33,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:33,866 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:33,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:33,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:33,933 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:33,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007263684]
[2022-01-31 18:09:33,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2007263684] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:33,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:33,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 18:09:33,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949978098]
[2022-01-31 18:09:33,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:33,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 18:09:33,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:33,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 18:09:33,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 18:09:33,936 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 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 18:09:33,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:33,980 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions.
[2022-01-31 18:09:33,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 18:09:33,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 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 18:09:33,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:33,982 INFO L225 Difference]: With dead ends: 32
[2022-01-31 18:09:33,982 INFO L226 Difference]: Without dead ends: 20
[2022-01-31 18:09:33,982 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 18:09:33,984 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:33,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 26 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 18:09:33,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2022-01-31 18:09:33,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2022-01-31 18:09:33,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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 18:09:33,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions.
[2022-01-31 18:09:33,990 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15
[2022-01-31 18:09:33,990 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:33,990 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions.
[2022-01-31 18:09:33,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 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 18:09:33,991 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions.
[2022-01-31 18:09:33,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2022-01-31 18:09:33,991 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:33,992 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:33,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-31 18:09:33,992 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:33,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:33,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1970595897, now seen corresponding path program 1 times
[2022-01-31 18:09:33,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:33,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105282087]
[2022-01-31 18:09:33,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:34,008 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:34,008 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:34,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:34,010 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:34,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:34,076 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 18:09:34,077 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:34,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105282087]
[2022-01-31 18:09:34,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2105282087] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:34,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:34,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-01-31 18:09:34,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498660804]
[2022-01-31 18:09:34,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:34,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-31 18:09:34,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:34,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-31 18:09:34,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-01-31 18:09:34,079 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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 18:09:34,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:34,182 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions.
[2022-01-31 18:09:34,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-01-31 18:09:34,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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 18:09:34,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:34,184 INFO L225 Difference]: With dead ends: 37
[2022-01-31 18:09:34,184 INFO L226 Difference]: Without dead ends: 25
[2022-01-31 18:09:34,185 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 18:09:34,186 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 16 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:34,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 28 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 18:09:34,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2022-01-31 18:09:34,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22.
[2022-01-31 18:09:34,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 18:09:34,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions.
[2022-01-31 18:09:34,195 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 16
[2022-01-31 18:09:34,196 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:34,196 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions.
[2022-01-31 18:09:34,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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 18:09:34,196 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions.
[2022-01-31 18:09:34,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2022-01-31 18:09:34,197 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:34,197 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:34,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-01-31 18:09:34,197 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:34,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:34,198 INFO L85 PathProgramCache]: Analyzing trace with hash -2075114266, now seen corresponding path program 1 times
[2022-01-31 18:09:34,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:34,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395254008]
[2022-01-31 18:09:34,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:34,201 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:34,201 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:34,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:34,203 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:34,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:34,287 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:34,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395254008]
[2022-01-31 18:09:34,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1395254008] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:34,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:34,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-01-31 18:09:34,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263265337]
[2022-01-31 18:09:34,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:34,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-31 18:09:34,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:34,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-31 18:09:34,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-01-31 18:09:34,290 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 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 18:09:34,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:34,373 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions.
[2022-01-31 18:09:34,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-01-31 18:09:34,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 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 18
[2022-01-31 18:09:34,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:34,375 INFO L225 Difference]: With dead ends: 39
[2022-01-31 18:09:34,375 INFO L226 Difference]: Without dead ends: 29
[2022-01-31 18:09:34,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-01-31 18:09:34,377 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:34,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 23 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 18:09:34,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2022-01-31 18:09:34,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23.
[2022-01-31 18:09:34,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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 18:09:34,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions.
[2022-01-31 18:09:34,384 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 18
[2022-01-31 18:09:34,384 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:34,384 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions.
[2022-01-31 18:09:34,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 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 18:09:34,385 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions.
[2022-01-31 18:09:34,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2022-01-31 18:09:34,385 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:34,385 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:34,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-01-31 18:09:34,386 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:34,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:34,386 INFO L85 PathProgramCache]: Analyzing trace with hash -2022936269, now seen corresponding path program 2 times
[2022-01-31 18:09:34,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:34,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695072717]
[2022-01-31 18:09:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:34,394 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:34,394 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:34,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:34,399 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:34,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:34,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:34,504 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:34,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695072717]
[2022-01-31 18:09:34,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1695072717] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:34,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:34,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-01-31 18:09:34,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379745472]
[2022-01-31 18:09:34,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:34,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-31 18:09:34,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:34,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-31 18:09:34,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2022-01-31 18:09:34,510 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 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 18:09:34,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:34,621 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions.
[2022-01-31 18:09:34,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-01-31 18:09:34,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 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 19
[2022-01-31 18:09:34,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:34,628 INFO L225 Difference]: With dead ends: 43
[2022-01-31 18:09:34,628 INFO L226 Difference]: Without dead ends: 33
[2022-01-31 18:09:34,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72
[2022-01-31 18:09:34,630 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 22 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:34,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 23 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 18:09:34,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2022-01-31 18:09:34,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24.
[2022-01-31 18:09:34,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 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 18:09:34,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions.
[2022-01-31 18:09:34,638 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 19
[2022-01-31 18:09:34,639 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:34,639 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions.
[2022-01-31 18:09:34,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 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 18:09:34,639 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions.
[2022-01-31 18:09:34,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2022-01-31 18:09:34,640 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:34,640 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:34,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-01-31 18:09:34,640 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:34,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:34,641 INFO L85 PathProgramCache]: Analyzing trace with hash -405418362, now seen corresponding path program 3 times
[2022-01-31 18:09:34,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:34,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061452590]
[2022-01-31 18:09:34,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:34,643 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:34,643 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:34,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:34,644 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:34,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:34,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:34,709 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:34,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061452590]
[2022-01-31 18:09:34,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2061452590] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:34,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:34,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-01-31 18:09:34,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071974787]
[2022-01-31 18:09:34,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:34,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-01-31 18:09:34,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:34,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-01-31 18:09:34,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-01-31 18:09:34,712 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 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 18:09:34,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:34,847 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions.
[2022-01-31 18:09:34,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-01-31 18:09:34,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 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 20
[2022-01-31 18:09:34,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:34,853 INFO L225 Difference]: With dead ends: 53
[2022-01-31 18:09:34,853 INFO L226 Difference]: Without dead ends: 38
[2022-01-31 18:09:34,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110
[2022-01-31 18:09:34,866 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 25 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:34,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 28 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 18:09:34,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2022-01-31 18:09:34,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26.
[2022-01-31 18:09:34,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.15) internal successors, (23), 20 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 18:09:34,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions.
[2022-01-31 18:09:34,873 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 20
[2022-01-31 18:09:34,873 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:34,873 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions.
[2022-01-31 18:09:34,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 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 18:09:34,874 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions.
[2022-01-31 18:09:34,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2022-01-31 18:09:34,874 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:34,874 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:34,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-01-31 18:09:34,875 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:34,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:34,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1737100295, now seen corresponding path program 4 times
[2022-01-31 18:09:34,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:34,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388788282]
[2022-01-31 18:09:34,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:34,884 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:34,884 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:34,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:34,890 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:34,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:34,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:34,987 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:34,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388788282]
[2022-01-31 18:09:34,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1388788282] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:34,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:34,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2022-01-31 18:09:34,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211294531]
[2022-01-31 18:09:34,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:34,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-01-31 18:09:34,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:34,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-01-31 18:09:34,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2022-01-31 18:09:34,991 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 18:09:35,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:35,138 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions.
[2022-01-31 18:09:35,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2022-01-31 18:09:35,139 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22
[2022-01-31 18:09:35,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:35,140 INFO L225 Difference]: With dead ends: 59
[2022-01-31 18:09:35,140 INFO L226 Difference]: Without dead ends: 43
[2022-01-31 18:09:35,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156
[2022-01-31 18:09:35,144 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 27 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:35,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 28 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 18:09:35,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2022-01-31 18:09:35,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28.
[2022-01-31 18:09:35,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 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 18:09:35,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions.
[2022-01-31 18:09:35,160 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 22
[2022-01-31 18:09:35,160 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:35,160 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions.
[2022-01-31 18:09:35,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 18:09:35,160 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions.
[2022-01-31 18:09:35,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-01-31 18:09:35,161 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:35,161 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:35,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-01-31 18:09:35,161 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:35,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:35,162 INFO L85 PathProgramCache]: Analyzing trace with hash -375180890, now seen corresponding path program 5 times
[2022-01-31 18:09:35,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:35,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116620096]
[2022-01-31 18:09:35,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:35,165 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:35,165 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:35,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:35,167 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:35,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:35,261 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 18:09:35,262 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:35,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116620096]
[2022-01-31 18:09:35,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1116620096] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:35,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:35,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2022-01-31 18:09:35,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382836066]
[2022-01-31 18:09:35,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:35,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-01-31 18:09:35,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:35,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-01-31 18:09:35,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72
[2022-01-31 18:09:35,266 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 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 18:09:35,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:35,413 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions.
[2022-01-31 18:09:35,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2022-01-31 18:09:35,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 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 24
[2022-01-31 18:09:35,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:35,416 INFO L225 Difference]: With dead ends: 65
[2022-01-31 18:09:35,416 INFO L226 Difference]: Without dead ends: 48
[2022-01-31 18:09:35,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210
[2022-01-31 18:09:35,417 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:35,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 28 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 18:09:35,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2022-01-31 18:09:35,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 30.
[2022-01-31 18:09:35,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.125) internal successors, (27), 24 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 18:09:35,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions.
[2022-01-31 18:09:35,427 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 24
[2022-01-31 18:09:35,427 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:35,427 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions.
[2022-01-31 18:09:35,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 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 18:09:35,427 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions.
[2022-01-31 18:09:35,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-01-31 18:09:35,428 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:35,428 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:35,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-01-31 18:09:35,428 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:35,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:35,429 INFO L85 PathProgramCache]: Analyzing trace with hash -78400793, now seen corresponding path program 6 times
[2022-01-31 18:09:35,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:35,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163711434]
[2022-01-31 18:09:35,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:35,430 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:35,430 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:35,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:35,432 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:35,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:35,513 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:35,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163711434]
[2022-01-31 18:09:35,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [163711434] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:35,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:35,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2022-01-31 18:09:35,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341887202]
[2022-01-31 18:09:35,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:35,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-01-31 18:09:35,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:35,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-01-31 18:09:35,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90
[2022-01-31 18:09:35,515 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 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 18:09:35,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:35,679 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions.
[2022-01-31 18:09:35,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2022-01-31 18:09:35,680 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 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 26
[2022-01-31 18:09:35,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:35,681 INFO L225 Difference]: With dead ends: 71
[2022-01-31 18:09:35,681 INFO L226 Difference]: Without dead ends: 53
[2022-01-31 18:09:35,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272
[2022-01-31 18:09:35,682 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 36 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:35,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 28 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 18:09:35,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2022-01-31 18:09:35,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32.
[2022-01-31 18:09:35,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 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 18:09:35,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions.
[2022-01-31 18:09:35,700 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 26
[2022-01-31 18:09:35,702 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:35,702 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions.
[2022-01-31 18:09:35,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 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 18:09:35,702 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions.
[2022-01-31 18:09:35,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2022-01-31 18:09:35,704 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:35,704 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:35,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-01-31 18:09:35,704 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:35,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:35,705 INFO L85 PathProgramCache]: Analyzing trace with hash -622359354, now seen corresponding path program 7 times
[2022-01-31 18:09:35,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:35,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161146645]
[2022-01-31 18:09:35,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:35,708 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:35,708 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:35,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:35,709 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:35,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:35,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:35,828 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:35,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161146645]
[2022-01-31 18:09:35,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1161146645] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:35,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:35,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2022-01-31 18:09:35,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425616845]
[2022-01-31 18:09:35,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:35,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-01-31 18:09:35,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:35,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-01-31 18:09:35,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110
[2022-01-31 18:09:35,830 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 18:09:36,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:36,017 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions.
[2022-01-31 18:09:36,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2022-01-31 18:09:36,017 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28
[2022-01-31 18:09:36,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:36,018 INFO L225 Difference]: With dead ends: 77
[2022-01-31 18:09:36,018 INFO L226 Difference]: Without dead ends: 58
[2022-01-31 18:09:36,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342
[2022-01-31 18:09:36,020 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 34 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:36,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 38 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 18:09:36,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2022-01-31 18:09:36,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 34.
[2022-01-31 18:09:36,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 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 18:09:36,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions.
[2022-01-31 18:09:36,036 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 28
[2022-01-31 18:09:36,037 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:36,037 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions.
[2022-01-31 18:09:36,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 18:09:36,038 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions.
[2022-01-31 18:09:36,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2022-01-31 18:09:36,041 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:36,041 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:36,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-01-31 18:09:36,041 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:36,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:36,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1396547129, now seen corresponding path program 8 times
[2022-01-31 18:09:36,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:36,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318801635]
[2022-01-31 18:09:36,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:36,044 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:36,044 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:36,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:36,046 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:36,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:36,165 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:36,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318801635]
[2022-01-31 18:09:36,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [318801635] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:36,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:36,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2022-01-31 18:09:36,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452043826]
[2022-01-31 18:09:36,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:36,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-01-31 18:09:36,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:36,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-01-31 18:09:36,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132
[2022-01-31 18:09:36,167 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 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 18:09:36,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:36,367 INFO L93 Difference]: Finished difference Result 83 states and 97 transitions.
[2022-01-31 18:09:36,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2022-01-31 18:09:36,368 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 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 30
[2022-01-31 18:09:36,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:36,368 INFO L225 Difference]: With dead ends: 83
[2022-01-31 18:09:36,368 INFO L226 Difference]: Without dead ends: 63
[2022-01-31 18:09:36,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420
[2022-01-31 18:09:36,369 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 42 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:36,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 28 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 18:09:36,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2022-01-31 18:09:36,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 36.
[2022-01-31 18:09:36,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.1) internal successors, (33), 30 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 18:09:36,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions.
[2022-01-31 18:09:36,376 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 30
[2022-01-31 18:09:36,376 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:36,376 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions.
[2022-01-31 18:09:36,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 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 18:09:36,376 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions.
[2022-01-31 18:09:36,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2022-01-31 18:09:36,377 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:36,377 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:36,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2022-01-31 18:09:36,377 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:36,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:36,378 INFO L85 PathProgramCache]: Analyzing trace with hash -433791002, now seen corresponding path program 9 times
[2022-01-31 18:09:36,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:36,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484935986]
[2022-01-31 18:09:36,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:36,379 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:36,379 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:36,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:36,381 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:36,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:36,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:36,507 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:36,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484935986]
[2022-01-31 18:09:36,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [484935986] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:36,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:36,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2022-01-31 18:09:36,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724764827]
[2022-01-31 18:09:36,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:36,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2022-01-31 18:09:36,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:36,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2022-01-31 18:09:36,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156
[2022-01-31 18:09:36,508 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 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 18:09:36,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:36,761 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions.
[2022-01-31 18:09:36,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2022-01-31 18:09:36,762 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 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 32
[2022-01-31 18:09:36,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:36,763 INFO L225 Difference]: With dead ends: 89
[2022-01-31 18:09:36,763 INFO L226 Difference]: Without dead ends: 68
[2022-01-31 18:09:36,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506
[2022-01-31 18:09:36,765 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 48 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:36,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 33 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 18:09:36,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2022-01-31 18:09:36,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 38.
[2022-01-31 18:09:36,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 32 states have (on average 1.09375) internal successors, (35), 32 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 18:09:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions.
[2022-01-31 18:09:36,775 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 32
[2022-01-31 18:09:36,775 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:36,775 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions.
[2022-01-31 18:09:36,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 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 18:09:36,775 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions.
[2022-01-31 18:09:36,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2022-01-31 18:09:36,776 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:36,776 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:36,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2022-01-31 18:09:36,776 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:36,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:36,776 INFO L85 PathProgramCache]: Analyzing trace with hash 991172775, now seen corresponding path program 10 times
[2022-01-31 18:09:36,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:36,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360336729]
[2022-01-31 18:09:36,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:36,778 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:36,778 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:36,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:36,779 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:36,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:36,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:36,904 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:36,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360336729]
[2022-01-31 18:09:36,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [360336729] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:36,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:36,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2022-01-31 18:09:36,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912598654]
[2022-01-31 18:09:36,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:36,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2022-01-31 18:09:36,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:36,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2022-01-31 18:09:36,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182
[2022-01-31 18:09:36,906 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 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 18:09:37,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:37,180 INFO L93 Difference]: Finished difference Result 95 states and 111 transitions.
[2022-01-31 18:09:37,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2022-01-31 18:09:37,181 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 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 34
[2022-01-31 18:09:37,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:37,181 INFO L225 Difference]: With dead ends: 95
[2022-01-31 18:09:37,182 INFO L226 Difference]: Without dead ends: 73
[2022-01-31 18:09:37,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600
[2022-01-31 18:09:37,183 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 61 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:37,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 23 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 18:09:37,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states.
[2022-01-31 18:09:37,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 40.
[2022-01-31 18:09:37,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 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 18:09:37,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions.
[2022-01-31 18:09:37,198 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 34
[2022-01-31 18:09:37,198 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:37,198 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions.
[2022-01-31 18:09:37,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 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 18:09:37,199 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions.
[2022-01-31 18:09:37,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-01-31 18:09:37,199 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:37,200 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:37,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2022-01-31 18:09:37,200 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:37,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:37,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1834822406, now seen corresponding path program 11 times
[2022-01-31 18:09:37,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:37,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107633971]
[2022-01-31 18:09:37,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:37,202 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:37,202 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:37,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:37,204 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:37,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:37,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:37,352 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:37,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107633971]
[2022-01-31 18:09:37,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2107633971] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:37,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:37,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2022-01-31 18:09:37,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101098708]
[2022-01-31 18:09:37,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:37,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-01-31 18:09:37,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:37,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-01-31 18:09:37,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210
[2022-01-31 18:09:37,354 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 14 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 18:09:37,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:37,650 INFO L93 Difference]: Finished difference Result 101 states and 118 transitions.
[2022-01-31 18:09:37,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2022-01-31 18:09:37,651 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 14 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 36
[2022-01-31 18:09:37,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:37,651 INFO L225 Difference]: With dead ends: 101
[2022-01-31 18:09:37,651 INFO L226 Difference]: Without dead ends: 78
[2022-01-31 18:09:37,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702
[2022-01-31 18:09:37,652 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 51 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:37,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 43 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 18:09:37,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2022-01-31 18:09:37,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 42.
[2022-01-31 18:09:37,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 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 18:09:37,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions.
[2022-01-31 18:09:37,659 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 36
[2022-01-31 18:09:37,659 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:37,659 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions.
[2022-01-31 18:09:37,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 14 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 18:09:37,660 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions.
[2022-01-31 18:09:37,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2022-01-31 18:09:37,660 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:37,660 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:37,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2022-01-31 18:09:37,660 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:37,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:37,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1577506695, now seen corresponding path program 12 times
[2022-01-31 18:09:37,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:37,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726135195]
[2022-01-31 18:09:37,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:37,662 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:37,662 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:37,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:37,664 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:37,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:37,801 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:37,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726135195]
[2022-01-31 18:09:37,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [726135195] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:37,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:37,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2022-01-31 18:09:37,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064449851]
[2022-01-31 18:09:37,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:37,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-01-31 18:09:37,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:37,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-01-31 18:09:37,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240
[2022-01-31 18:09:37,802 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 16 states, 16 states have (on average 1.5) internal successors, (24), 15 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 18:09:38,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:38,122 INFO L93 Difference]: Finished difference Result 107 states and 125 transitions.
[2022-01-31 18:09:38,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2022-01-31 18:09:38,122 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.5) internal successors, (24), 15 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 38
[2022-01-31 18:09:38,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:38,123 INFO L225 Difference]: With dead ends: 107
[2022-01-31 18:09:38,123 INFO L226 Difference]: Without dead ends: 83
[2022-01-31 18:09:38,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812
[2022-01-31 18:09:38,125 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 54 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:38,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 38 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 18:09:38,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states.
[2022-01-31 18:09:38,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 44.
[2022-01-31 18:09:38,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 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 18:09:38,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions.
[2022-01-31 18:09:38,131 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 38
[2022-01-31 18:09:38,132 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:38,132 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions.
[2022-01-31 18:09:38,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.5) internal successors, (24), 15 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 18:09:38,132 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions.
[2022-01-31 18:09:38,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2022-01-31 18:09:38,132 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:38,132 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:38,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2022-01-31 18:09:38,133 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:38,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:38,133 INFO L85 PathProgramCache]: Analyzing trace with hash 705850918, now seen corresponding path program 13 times
[2022-01-31 18:09:38,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:38,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706099561]
[2022-01-31 18:09:38,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:38,134 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:38,135 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:38,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:38,136 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:38,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:38,296 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 18:09:38,297 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:38,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706099561]
[2022-01-31 18:09:38,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [706099561] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:38,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:38,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17
[2022-01-31 18:09:38,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196637189]
[2022-01-31 18:09:38,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:38,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2022-01-31 18:09:38,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:38,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2022-01-31 18:09:38,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272
[2022-01-31 18:09:38,298 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 16 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 18:09:38,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:38,667 INFO L93 Difference]: Finished difference Result 113 states and 132 transitions.
[2022-01-31 18:09:38,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2022-01-31 18:09:38,668 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 16 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 40
[2022-01-31 18:09:38,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:38,669 INFO L225 Difference]: With dead ends: 113
[2022-01-31 18:09:38,669 INFO L226 Difference]: Without dead ends: 88
[2022-01-31 18:09:38,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930
[2022-01-31 18:09:38,670 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 68 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:38,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 33 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 18:09:38,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states.
[2022-01-31 18:09:38,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 46.
[2022-01-31 18:09:38,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 40 states have (on average 1.075) internal successors, (43), 40 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 18:09:38,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions.
[2022-01-31 18:09:38,677 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 40
[2022-01-31 18:09:38,677 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:38,677 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions.
[2022-01-31 18:09:38,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 16 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 18:09:38,677 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions.
[2022-01-31 18:09:38,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2022-01-31 18:09:38,678 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:38,678 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:38,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2022-01-31 18:09:38,678 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:38,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:38,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1512530329, now seen corresponding path program 14 times
[2022-01-31 18:09:38,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:38,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924977536]
[2022-01-31 18:09:38,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:38,680 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:38,680 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:38,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:38,681 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:38,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:38,855 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 18:09:38,856 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:38,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924977536]
[2022-01-31 18:09:38,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [924977536] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:38,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:38,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18
[2022-01-31 18:09:38,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488970610]
[2022-01-31 18:09:38,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:38,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2022-01-31 18:09:38,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:38,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2022-01-31 18:09:38,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306
[2022-01-31 18:09:38,857 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 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 18:09:39,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:39,255 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions.
[2022-01-31 18:09:39,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2022-01-31 18:09:39,255 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 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 42
[2022-01-31 18:09:39,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:39,256 INFO L225 Difference]: With dead ends: 119
[2022-01-31 18:09:39,256 INFO L226 Difference]: Without dead ends: 93
[2022-01-31 18:09:39,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056
[2022-01-31 18:09:39,257 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 70 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:39,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 38 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 18:09:39,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2022-01-31 18:09:39,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 48.
[2022-01-31 18:09:39,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 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 18:09:39,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions.
[2022-01-31 18:09:39,268 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 42
[2022-01-31 18:09:39,268 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:39,268 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions.
[2022-01-31 18:09:39,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 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 18:09:39,268 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions.
[2022-01-31 18:09:39,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2022-01-31 18:09:39,268 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:39,269 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:39,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2022-01-31 18:09:39,269 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:39,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:39,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1296476486, now seen corresponding path program 15 times
[2022-01-31 18:09:39,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:39,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103183592]
[2022-01-31 18:09:39,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:39,271 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:39,271 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:39,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:39,272 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:39,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:39,479 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:39,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103183592]
[2022-01-31 18:09:39,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2103183592] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:39,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:39,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19
[2022-01-31 18:09:39,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64908456]
[2022-01-31 18:09:39,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:39,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2022-01-31 18:09:39,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:39,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2022-01-31 18:09:39,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342
[2022-01-31 18:09:39,481 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 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 18:09:39,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:39,894 INFO L93 Difference]: Finished difference Result 125 states and 146 transitions.
[2022-01-31 18:09:39,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2022-01-31 18:09:39,894 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 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 44
[2022-01-31 18:09:39,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:39,896 INFO L225 Difference]: With dead ends: 125
[2022-01-31 18:09:39,896 INFO L226 Difference]: Without dead ends: 98
[2022-01-31 18:09:39,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190
[2022-01-31 18:09:39,898 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 66 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:39,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 33 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 18:09:39,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states.
[2022-01-31 18:09:39,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 50.
[2022-01-31 18:09:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 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 18:09:39,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions.
[2022-01-31 18:09:39,906 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 44
[2022-01-31 18:09:39,907 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:39,907 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions.
[2022-01-31 18:09:39,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 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 18:09:39,907 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions.
[2022-01-31 18:09:39,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2022-01-31 18:09:39,907 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:39,907 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:39,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2022-01-31 18:09:39,908 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:39,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:39,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1531407687, now seen corresponding path program 16 times
[2022-01-31 18:09:39,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:39,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552021633]
[2022-01-31 18:09:39,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:39,911 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:39,911 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:39,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:39,913 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:40,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:40,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:40,112 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:40,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552021633]
[2022-01-31 18:09:40,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [552021633] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:40,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:40,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20
[2022-01-31 18:09:40,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600264232]
[2022-01-31 18:09:40,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:40,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2022-01-31 18:09:40,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:40,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2022-01-31 18:09:40,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380
[2022-01-31 18:09:40,113 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 20 states, 20 states have (on average 1.4) internal successors, (28), 19 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 18:09:40,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:40,566 INFO L93 Difference]: Finished difference Result 131 states and 153 transitions.
[2022-01-31 18:09:40,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2022-01-31 18:09:40,567 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.4) internal successors, (28), 19 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 46
[2022-01-31 18:09:40,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:40,568 INFO L225 Difference]: With dead ends: 131
[2022-01-31 18:09:40,568 INFO L226 Difference]: Without dead ends: 103
[2022-01-31 18:09:40,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332
[2022-01-31 18:09:40,569 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 80 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:40,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 23 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 18:09:40,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2022-01-31 18:09:40,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 52.
[2022-01-31 18:09:40,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 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 18:09:40,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions.
[2022-01-31 18:09:40,579 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 46
[2022-01-31 18:09:40,579 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:40,579 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions.
[2022-01-31 18:09:40,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.4) internal successors, (28), 19 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 18:09:40,579 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions.
[2022-01-31 18:09:40,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2022-01-31 18:09:40,580 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:40,580 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:40,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2022-01-31 18:09:40,580 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:40,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:40,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1619272602, now seen corresponding path program 17 times
[2022-01-31 18:09:40,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:40,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741530542]
[2022-01-31 18:09:40,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:40,584 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:40,584 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:40,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:40,586 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:40,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:40,801 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:40,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741530542]
[2022-01-31 18:09:40,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [741530542] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:40,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:40,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21
[2022-01-31 18:09:40,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126514903]
[2022-01-31 18:09:40,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:40,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2022-01-31 18:09:40,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:40,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2022-01-31 18:09:40,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420
[2022-01-31 18:09:40,803 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 20 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 18:09:41,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:41,332 INFO L93 Difference]: Finished difference Result 137 states and 160 transitions.
[2022-01-31 18:09:41,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2022-01-31 18:09:41,333 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 20 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 48
[2022-01-31 18:09:41,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:41,334 INFO L225 Difference]: With dead ends: 137
[2022-01-31 18:09:41,334 INFO L226 Difference]: Without dead ends: 108
[2022-01-31 18:09:41,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482
[2022-01-31 18:09:41,338 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 64 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:41,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 48 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 18:09:41,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states.
[2022-01-31 18:09:41,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 54.
[2022-01-31 18:09:41,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.0625) internal successors, (51), 48 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 18:09:41,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions.
[2022-01-31 18:09:41,353 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 48
[2022-01-31 18:09:41,353 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:41,353 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions.
[2022-01-31 18:09:41,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 20 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 18:09:41,354 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions.
[2022-01-31 18:09:41,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2022-01-31 18:09:41,354 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:41,354 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:41,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2022-01-31 18:09:41,354 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:41,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:41,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1603355687, now seen corresponding path program 18 times
[2022-01-31 18:09:41,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:41,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645632230]
[2022-01-31 18:09:41,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:41,356 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:41,356 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:41,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:41,357 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:41,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:41,590 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:41,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645632230]
[2022-01-31 18:09:41,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1645632230] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:41,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:41,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22
[2022-01-31 18:09:41,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249624580]
[2022-01-31 18:09:41,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:41,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2022-01-31 18:09:41,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:41,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2022-01-31 18:09:41,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462
[2022-01-31 18:09:41,591 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 21 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 18:09:42,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:42,130 INFO L93 Difference]: Finished difference Result 143 states and 167 transitions.
[2022-01-31 18:09:42,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2022-01-31 18:09:42,130 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 21 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 50
[2022-01-31 18:09:42,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:42,131 INFO L225 Difference]: With dead ends: 143
[2022-01-31 18:09:42,131 INFO L226 Difference]: Without dead ends: 113
[2022-01-31 18:09:42,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640
[2022-01-31 18:09:42,132 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 97 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:42,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 23 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 18:09:42,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states.
[2022-01-31 18:09:42,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 56.
[2022-01-31 18:09:42,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.06) internal successors, (53), 50 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 18:09:42,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions.
[2022-01-31 18:09:42,163 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 50
[2022-01-31 18:09:42,163 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:42,163 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions.
[2022-01-31 18:09:42,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 21 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 18:09:42,163 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions.
[2022-01-31 18:09:42,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2022-01-31 18:09:42,164 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:42,164 INFO L514 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:42,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20
[2022-01-31 18:09:42,164 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:42,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:42,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1598814330, now seen corresponding path program 19 times
[2022-01-31 18:09:42,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:42,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679893949]
[2022-01-31 18:09:42,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:42,166 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:42,166 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:42,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:42,167 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:42,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:42,416 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:42,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679893949]
[2022-01-31 18:09:42,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1679893949] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:42,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:42,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23
[2022-01-31 18:09:42,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577088207]
[2022-01-31 18:09:42,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:42,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2022-01-31 18:09:42,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:42,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2022-01-31 18:09:42,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506
[2022-01-31 18:09:42,418 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 22 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 18:09:42,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:42,932 INFO L93 Difference]: Finished difference Result 149 states and 174 transitions.
[2022-01-31 18:09:42,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2022-01-31 18:09:42,934 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 22 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 52
[2022-01-31 18:09:42,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:42,935 INFO L225 Difference]: With dead ends: 149
[2022-01-31 18:09:42,935 INFO L226 Difference]: Without dead ends: 118
[2022-01-31 18:09:42,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806
[2022-01-31 18:09:42,936 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 83 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:42,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 38 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 18:09:42,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states.
[2022-01-31 18:09:42,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 58.
[2022-01-31 18:09:42,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 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 18:09:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions.
[2022-01-31 18:09:42,946 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 52
[2022-01-31 18:09:42,947 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:42,947 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions.
[2022-01-31 18:09:42,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 22 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 18:09:42,947 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions.
[2022-01-31 18:09:42,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2022-01-31 18:09:42,947 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:42,947 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:42,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21
[2022-01-31 18:09:42,948 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:42,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:42,948 INFO L85 PathProgramCache]: Analyzing trace with hash 208937735, now seen corresponding path program 20 times
[2022-01-31 18:09:42,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:42,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160111369]
[2022-01-31 18:09:42,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:42,949 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:42,949 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:42,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:42,951 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:43,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:43,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:43,235 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:43,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160111369]
[2022-01-31 18:09:43,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1160111369] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:43,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:43,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24
[2022-01-31 18:09:43,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774660119]
[2022-01-31 18:09:43,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:43,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-01-31 18:09:43,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:43,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-01-31 18:09:43,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552
[2022-01-31 18:09:43,237 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 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 18:09:43,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:43,914 INFO L93 Difference]: Finished difference Result 155 states and 181 transitions.
[2022-01-31 18:09:43,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2022-01-31 18:09:43,915 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 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 54
[2022-01-31 18:09:43,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:43,916 INFO L225 Difference]: With dead ends: 155
[2022-01-31 18:09:43,916 INFO L226 Difference]: Without dead ends: 123
[2022-01-31 18:09:43,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980
[2022-01-31 18:09:43,917 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 109 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:43,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 23 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 18:09:43,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2022-01-31 18:09:43,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 60.
[2022-01-31 18:09:43,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 54 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 18:09:43,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions.
[2022-01-31 18:09:43,928 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 54
[2022-01-31 18:09:43,928 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:43,928 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions.
[2022-01-31 18:09:43,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 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 18:09:43,928 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions.
[2022-01-31 18:09:43,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2022-01-31 18:09:43,929 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:43,929 INFO L514 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:43,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22
[2022-01-31 18:09:43,929 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:43,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:43,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1468978522, now seen corresponding path program 21 times
[2022-01-31 18:09:43,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:43,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170420633]
[2022-01-31 18:09:43,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:43,930 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:43,931 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:43,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:43,932 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:44,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:44,212 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 18:09:44,213 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:44,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170420633]
[2022-01-31 18:09:44,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1170420633] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:44,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:44,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25
[2022-01-31 18:09:44,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086384743]
[2022-01-31 18:09:44,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:44,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2022-01-31 18:09:44,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:44,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2022-01-31 18:09:44,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600
[2022-01-31 18:09:44,214 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 25 states, 25 states have (on average 1.32) internal successors, (33), 24 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 18:09:44,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:44,857 INFO L93 Difference]: Finished difference Result 161 states and 188 transitions.
[2022-01-31 18:09:44,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2022-01-31 18:09:44,858 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.32) internal successors, (33), 24 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 56
[2022-01-31 18:09:44,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:44,859 INFO L225 Difference]: With dead ends: 161
[2022-01-31 18:09:44,859 INFO L226 Difference]: Without dead ends: 128
[2022-01-31 18:09:44,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162
[2022-01-31 18:09:44,860 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 103 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:44,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 28 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 18:09:44,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states.
[2022-01-31 18:09:44,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 62.
[2022-01-31 18:09:44,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 56 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 18:09:44,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions.
[2022-01-31 18:09:44,869 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 56
[2022-01-31 18:09:44,870 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:44,870 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions.
[2022-01-31 18:09:44,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.32) internal successors, (33), 24 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 18:09:44,870 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions.
[2022-01-31 18:09:44,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2022-01-31 18:09:44,870 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:44,870 INFO L514 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:44,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23
[2022-01-31 18:09:44,871 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:44,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:44,871 INFO L85 PathProgramCache]: Analyzing trace with hash 338561511, now seen corresponding path program 22 times
[2022-01-31 18:09:44,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:44,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432842592]
[2022-01-31 18:09:44,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:44,872 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:44,872 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:44,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:44,874 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:45,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:45,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:45,177 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:45,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432842592]
[2022-01-31 18:09:45,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1432842592] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:45,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:45,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26
[2022-01-31 18:09:45,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275761531]
[2022-01-31 18:09:45,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:45,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-01-31 18:09:45,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:45,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-01-31 18:09:45,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650
[2022-01-31 18:09:45,179 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 25 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 18:09:45,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:45,842 INFO L93 Difference]: Finished difference Result 167 states and 195 transitions.
[2022-01-31 18:09:45,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2022-01-31 18:09:45,842 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 25 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 58
[2022-01-31 18:09:45,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:45,843 INFO L225 Difference]: With dead ends: 167
[2022-01-31 18:09:45,843 INFO L226 Difference]: Without dead ends: 133
[2022-01-31 18:09:45,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352
[2022-01-31 18:09:45,844 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 93 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:45,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 43 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 18:09:45,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states.
[2022-01-31 18:09:45,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 64.
[2022-01-31 18:09:45,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 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 18:09:45,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions.
[2022-01-31 18:09:45,859 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 58
[2022-01-31 18:09:45,859 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:45,860 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions.
[2022-01-31 18:09:45,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 25 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 18:09:45,860 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions.
[2022-01-31 18:09:45,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2022-01-31 18:09:45,860 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:45,860 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:45,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24
[2022-01-31 18:09:45,860 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:45,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:45,861 INFO L85 PathProgramCache]: Analyzing trace with hash 95765958, now seen corresponding path program 23 times
[2022-01-31 18:09:45,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:45,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796572400]
[2022-01-31 18:09:45,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:45,862 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:45,862 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:45,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:45,864 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:46,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:46,168 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 18:09:46,168 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:46,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796572400]
[2022-01-31 18:09:46,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1796572400] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:46,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:46,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27
[2022-01-31 18:09:46,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410800022]
[2022-01-31 18:09:46,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:46,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2022-01-31 18:09:46,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:46,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2022-01-31 18:09:46,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702
[2022-01-31 18:09:46,170 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 27 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 26 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 18:09:46,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:46,844 INFO L93 Difference]: Finished difference Result 173 states and 202 transitions.
[2022-01-31 18:09:46,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2022-01-31 18:09:46,844 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 26 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 60
[2022-01-31 18:09:46,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:46,845 INFO L225 Difference]: With dead ends: 173
[2022-01-31 18:09:46,845 INFO L226 Difference]: Without dead ends: 138
[2022-01-31 18:09:46,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550
[2022-01-31 18:09:46,846 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 100 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:46,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 33 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 18:09:46,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states.
[2022-01-31 18:09:46,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 66.
[2022-01-31 18:09:46,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 60 states have (on average 1.05) internal successors, (63), 60 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 18:09:46,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions.
[2022-01-31 18:09:46,859 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 60
[2022-01-31 18:09:46,859 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:46,859 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions.
[2022-01-31 18:09:46,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 26 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 18:09:46,860 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions.
[2022-01-31 18:09:46,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63
[2022-01-31 18:09:46,860 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:46,860 INFO L514 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:46,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25
[2022-01-31 18:09:46,860 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:46,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:46,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1635580103, now seen corresponding path program 24 times
[2022-01-31 18:09:46,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:46,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218585289]
[2022-01-31 18:09:46,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:46,862 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:46,862 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:46,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:46,864 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:47,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:47,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:47,192 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:47,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218585289]
[2022-01-31 18:09:47,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [218585289] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:47,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:47,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28
[2022-01-31 18:09:47,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059874542]
[2022-01-31 18:09:47,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:47,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-01-31 18:09:47,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:47,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-01-31 18:09:47,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756
[2022-01-31 18:09:47,194 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 27 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 18:09:47,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:47,989 INFO L93 Difference]: Finished difference Result 179 states and 209 transitions.
[2022-01-31 18:09:47,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2022-01-31 18:09:47,990 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 27 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 62
[2022-01-31 18:09:47,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:47,990 INFO L225 Difference]: With dead ends: 179
[2022-01-31 18:09:47,991 INFO L226 Difference]: Without dead ends: 143
[2022-01-31 18:09:47,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756
[2022-01-31 18:09:47,992 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 96 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:47,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 48 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 18:09:47,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states.
[2022-01-31 18:09:48,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 68.
[2022-01-31 18:09:48,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 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 18:09:48,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions.
[2022-01-31 18:09:48,005 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 62
[2022-01-31 18:09:48,006 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:48,006 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions.
[2022-01-31 18:09:48,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 27 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 18:09:48,006 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions.
[2022-01-31 18:09:48,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2022-01-31 18:09:48,006 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:48,006 INFO L514 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:48,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26
[2022-01-31 18:09:48,007 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:48,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:48,007 INFO L85 PathProgramCache]: Analyzing trace with hash 520247526, now seen corresponding path program 25 times
[2022-01-31 18:09:48,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:48,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831572416]
[2022-01-31 18:09:48,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:48,008 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:48,008 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:48,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:48,010 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:48,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:48,344 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:48,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831572416]
[2022-01-31 18:09:48,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [831572416] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:48,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:48,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29
[2022-01-31 18:09:48,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317967645]
[2022-01-31 18:09:48,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:48,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2022-01-31 18:09:48,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:48,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2022-01-31 18:09:48,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812
[2022-01-31 18:09:48,345 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand has 29 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 28 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 18:09:49,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:49,174 INFO L93 Difference]: Finished difference Result 185 states and 216 transitions.
[2022-01-31 18:09:49,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2022-01-31 18:09:49,175 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 28 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 64
[2022-01-31 18:09:49,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:49,176 INFO L225 Difference]: With dead ends: 185
[2022-01-31 18:09:49,176 INFO L226 Difference]: Without dead ends: 148
[2022-01-31 18:09:49,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970
[2022-01-31 18:09:49,177 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 136 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:49,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 28 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 18:09:49,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states.
[2022-01-31 18:09:49,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 70.
[2022-01-31 18:09:49,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 64 states have (on average 1.046875) internal successors, (67), 64 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 18:09:49,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions.
[2022-01-31 18:09:49,190 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 64
[2022-01-31 18:09:49,190 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:49,190 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions.
[2022-01-31 18:09:49,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 28 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 18:09:49,190 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions.
[2022-01-31 18:09:49,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2022-01-31 18:09:49,190 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:49,190 INFO L514 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:49,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27
[2022-01-31 18:09:49,190 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:49,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:49,191 INFO L85 PathProgramCache]: Analyzing trace with hash -140578905, now seen corresponding path program 26 times
[2022-01-31 18:09:49,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:49,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765081225]
[2022-01-31 18:09:49,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:49,192 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:49,192 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:49,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:49,206 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:49,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:49,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:49,602 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:49,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765081225]
[2022-01-31 18:09:49,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [765081225] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:49,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:49,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30
[2022-01-31 18:09:49,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743132335]
[2022-01-31 18:09:49,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:49,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states
[2022-01-31 18:09:49,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:49,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2022-01-31 18:09:49,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870
[2022-01-31 18:09:49,604 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand has 30 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 29 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 18:09:50,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:50,493 INFO L93 Difference]: Finished difference Result 191 states and 223 transitions.
[2022-01-31 18:09:50,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2022-01-31 18:09:50,494 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 29 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 66
[2022-01-31 18:09:50,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:50,494 INFO L225 Difference]: With dead ends: 191
[2022-01-31 18:09:50,495 INFO L226 Difference]: Without dead ends: 153
[2022-01-31 18:09:50,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192
[2022-01-31 18:09:50,496 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 111 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:50,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 43 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 18:09:50,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states.
[2022-01-31 18:09:50,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 72.
[2022-01-31 18:09:50,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 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 18:09:50,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions.
[2022-01-31 18:09:50,510 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 66
[2022-01-31 18:09:50,510 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:50,510 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions.
[2022-01-31 18:09:50,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 29 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 18:09:50,511 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions.
[2022-01-31 18:09:50,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2022-01-31 18:09:50,511 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:50,511 INFO L514 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:50,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28
[2022-01-31 18:09:50,511 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:50,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:50,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1839569914, now seen corresponding path program 27 times
[2022-01-31 18:09:50,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:50,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136008509]
[2022-01-31 18:09:50,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:50,513 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:50,513 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:50,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:50,515 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:50,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:50,888 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:50,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136008509]
[2022-01-31 18:09:50,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [136008509] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:50,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:50,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31
[2022-01-31 18:09:50,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600581900]
[2022-01-31 18:09:50,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:50,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states
[2022-01-31 18:09:50,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:50,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants.
[2022-01-31 18:09:50,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930
[2022-01-31 18:09:50,890 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 31 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 30 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 18:09:51,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:51,790 INFO L93 Difference]: Finished difference Result 197 states and 230 transitions.
[2022-01-31 18:09:51,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2022-01-31 18:09:51,791 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 30 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 68
[2022-01-31 18:09:51,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:51,796 INFO L225 Difference]: With dead ends: 197
[2022-01-31 18:09:51,796 INFO L226 Difference]: Without dead ends: 158
[2022-01-31 18:09:51,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422
[2022-01-31 18:09:51,797 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 120 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:51,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 33 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 18:09:51,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states.
[2022-01-31 18:09:51,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 74.
[2022-01-31 18:09:51,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 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 18:09:51,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions.
[2022-01-31 18:09:51,814 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 68
[2022-01-31 18:09:51,814 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:51,815 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions.
[2022-01-31 18:09:51,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 30 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 18:09:51,815 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions.
[2022-01-31 18:09:51,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2022-01-31 18:09:51,815 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:51,815 INFO L514 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:51,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29
[2022-01-31 18:09:51,815 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:51,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:51,816 INFO L85 PathProgramCache]: Analyzing trace with hash -766382457, now seen corresponding path program 28 times
[2022-01-31 18:09:51,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:51,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031553491]
[2022-01-31 18:09:51,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:51,818 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:51,818 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:51,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:51,821 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:52,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:52,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:52,250 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:52,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031553491]
[2022-01-31 18:09:52,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2031553491] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:52,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:52,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32
[2022-01-31 18:09:52,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677611440]
[2022-01-31 18:09:52,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:52,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2022-01-31 18:09:52,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:52,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2022-01-31 18:09:52,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992
[2022-01-31 18:09:52,252 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 32 states, 32 states have (on average 1.25) internal successors, (40), 31 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 18:09:53,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:53,151 INFO L93 Difference]: Finished difference Result 203 states and 237 transitions.
[2022-01-31 18:09:53,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2022-01-31 18:09:53,152 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.25) internal successors, (40), 31 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 70
[2022-01-31 18:09:53,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:53,153 INFO L225 Difference]: With dead ends: 203
[2022-01-31 18:09:53,153 INFO L226 Difference]: Without dead ends: 163
[2022-01-31 18:09:53,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660
[2022-01-31 18:09:53,154 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 125 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:53,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 48 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 18:09:53,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states.
[2022-01-31 18:09:53,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 76.
[2022-01-31 18:09:53,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 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 18:09:53,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions.
[2022-01-31 18:09:53,171 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 70
[2022-01-31 18:09:53,171 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:53,171 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions.
[2022-01-31 18:09:53,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.25) internal successors, (40), 31 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 18:09:53,171 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions.
[2022-01-31 18:09:53,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73
[2022-01-31 18:09:53,172 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:53,172 INFO L514 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:53,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30
[2022-01-31 18:09:53,172 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:53,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:53,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1430218534, now seen corresponding path program 29 times
[2022-01-31 18:09:53,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:53,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918285887]
[2022-01-31 18:09:53,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:53,174 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:53,174 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:53,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:53,176 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:53,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:53,574 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 18:09:53,574 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:53,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918285887]
[2022-01-31 18:09:53,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1918285887] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:53,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:53,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33
[2022-01-31 18:09:53,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383351508]
[2022-01-31 18:09:53,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:53,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states
[2022-01-31 18:09:53,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:53,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2022-01-31 18:09:53,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056
[2022-01-31 18:09:53,576 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 32 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 18:09:54,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:54,588 INFO L93 Difference]: Finished difference Result 209 states and 244 transitions.
[2022-01-31 18:09:54,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2022-01-31 18:09:54,588 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 32 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 72
[2022-01-31 18:09:54,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:54,589 INFO L225 Difference]: With dead ends: 209
[2022-01-31 18:09:54,589 INFO L226 Difference]: Without dead ends: 168
[2022-01-31 18:09:54,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906
[2022-01-31 18:09:54,590 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 143 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:54,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 38 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 18:09:54,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states.
[2022-01-31 18:09:54,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 78.
[2022-01-31 18:09:54,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 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 18:09:54,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions.
[2022-01-31 18:09:54,610 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 72
[2022-01-31 18:09:54,611 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:54,611 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions.
[2022-01-31 18:09:54,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 32 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 18:09:54,611 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions.
[2022-01-31 18:09:54,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2022-01-31 18:09:54,612 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:54,613 INFO L514 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:54,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31
[2022-01-31 18:09:54,613 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:54,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:54,613 INFO L85 PathProgramCache]: Analyzing trace with hash -975964825, now seen corresponding path program 30 times
[2022-01-31 18:09:54,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:54,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372158243]
[2022-01-31 18:09:54,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:54,615 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:54,615 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:54,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:54,617 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:55,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:55,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:55,046 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:55,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372158243]
[2022-01-31 18:09:55,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1372158243] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:55,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:55,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34
[2022-01-31 18:09:55,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592904254]
[2022-01-31 18:09:55,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:55,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states
[2022-01-31 18:09:55,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:55,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2022-01-31 18:09:55,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122
[2022-01-31 18:09:55,048 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 34 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 33 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 18:09:56,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:56,155 INFO L93 Difference]: Finished difference Result 215 states and 251 transitions.
[2022-01-31 18:09:56,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2022-01-31 18:09:56,155 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 33 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 74
[2022-01-31 18:09:56,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:56,156 INFO L225 Difference]: With dead ends: 215
[2022-01-31 18:09:56,156 INFO L226 Difference]: Without dead ends: 173
[2022-01-31 18:09:56,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160
[2022-01-31 18:09:56,157 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 129 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:56,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 43 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 18:09:56,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states.
[2022-01-31 18:09:56,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 80.
[2022-01-31 18:09:56,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 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 18:09:56,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions.
[2022-01-31 18:09:56,175 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 74
[2022-01-31 18:09:56,175 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:56,175 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions.
[2022-01-31 18:09:56,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 33 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 18:09:56,175 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions.
[2022-01-31 18:09:56,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77
[2022-01-31 18:09:56,176 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:56,176 INFO L514 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:56,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32
[2022-01-31 18:09:56,176 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:56,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:56,176 INFO L85 PathProgramCache]: Analyzing trace with hash -726441402, now seen corresponding path program 31 times
[2022-01-31 18:09:56,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:56,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548200497]
[2022-01-31 18:09:56,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:56,177 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:56,177 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:56,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:56,179 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:56,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:56,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:09:56,680 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:56,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548200497]
[2022-01-31 18:09:56,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1548200497] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:56,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:56,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35
[2022-01-31 18:09:56,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992208207]
[2022-01-31 18:09:56,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:56,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states
[2022-01-31 18:09:56,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:56,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2022-01-31 18:09:56,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190
[2022-01-31 18:09:56,682 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand has 35 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 34 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 18:09:57,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:57,774 INFO L93 Difference]: Finished difference Result 221 states and 258 transitions.
[2022-01-31 18:09:57,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2022-01-31 18:09:57,776 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 34 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 76
[2022-01-31 18:09:57,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:57,777 INFO L225 Difference]: With dead ends: 221
[2022-01-31 18:09:57,777 INFO L226 Difference]: Without dead ends: 178
[2022-01-31 18:09:57,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422
[2022-01-31 18:09:57,778 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 159 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:57,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 33 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 18:09:57,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states.
[2022-01-31 18:09:57,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 82.
[2022-01-31 18:09:57,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 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 18:09:57,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions.
[2022-01-31 18:09:57,796 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 76
[2022-01-31 18:09:57,796 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:57,796 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions.
[2022-01-31 18:09:57,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 34 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 18:09:57,796 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions.
[2022-01-31 18:09:57,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2022-01-31 18:09:57,796 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:57,797 INFO L514 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:57,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33
[2022-01-31 18:09:57,797 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:57,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:57,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1591936071, now seen corresponding path program 32 times
[2022-01-31 18:09:57,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:57,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99149982]
[2022-01-31 18:09:57,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:57,798 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:57,798 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:57,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:57,800 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:58,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:09:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:09:58,333 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 18:09:58,333 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:09:58,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99149982]
[2022-01-31 18:09:58,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [99149982] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:09:58,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:09:58,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36
[2022-01-31 18:09:58,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637372858]
[2022-01-31 18:09:58,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:09:58,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states
[2022-01-31 18:09:58,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:09:58,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2022-01-31 18:09:58,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260
[2022-01-31 18:09:58,335 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand has 36 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 35 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 18:09:59,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:09:59,521 INFO L93 Difference]: Finished difference Result 227 states and 265 transitions.
[2022-01-31 18:09:59,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2022-01-31 18:09:59,522 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 35 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 78
[2022-01-31 18:09:59,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:09:59,522 INFO L225 Difference]: With dead ends: 227
[2022-01-31 18:09:59,523 INFO L226 Difference]: Without dead ends: 183
[2022-01-31 18:09:59,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692
[2022-01-31 18:09:59,524 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 152 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 18:09:59,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 33 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 18:09:59,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states.
[2022-01-31 18:09:59,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 84.
[2022-01-31 18:09:59,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 78 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 18:09:59,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions.
[2022-01-31 18:09:59,544 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 78
[2022-01-31 18:09:59,544 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:09:59,545 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions.
[2022-01-31 18:09:59,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 35 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 18:09:59,545 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions.
[2022-01-31 18:09:59,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81
[2022-01-31 18:09:59,545 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:09:59,545 INFO L514 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:09:59,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34
[2022-01-31 18:09:59,546 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:09:59,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:09:59,546 INFO L85 PathProgramCache]: Analyzing trace with hash 356013414, now seen corresponding path program 33 times
[2022-01-31 18:09:59,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:09:59,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987508206]
[2022-01-31 18:09:59,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:09:59,547 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:09:59,547 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:09:59,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:09:59,550 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:09:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:00,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:10:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:00,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:10:00,062 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:10:00,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987508206]
[2022-01-31 18:10:00,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [987508206] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:10:00,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:10:00,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37
[2022-01-31 18:10:00,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122482011]
[2022-01-31 18:10:00,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:10:00,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states
[2022-01-31 18:10:00,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:10:00,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2022-01-31 18:10:00,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332
[2022-01-31 18:10:00,063 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand has 37 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 36 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 18:10:01,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:10:01,339 INFO L93 Difference]: Finished difference Result 233 states and 272 transitions.
[2022-01-31 18:10:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2022-01-31 18:10:01,339 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 36 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 80
[2022-01-31 18:10:01,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:10:01,340 INFO L225 Difference]: With dead ends: 233
[2022-01-31 18:10:01,340 INFO L226 Difference]: Without dead ends: 188
[2022-01-31 18:10:01,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970
[2022-01-31 18:10:01,341 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 146 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-31 18:10:01,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 53 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-31 18:10:01,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states.
[2022-01-31 18:10:01,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 86.
[2022-01-31 18:10:01,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 80 states have (on average 1.0375) internal successors, (83), 80 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 18:10:01,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions.
[2022-01-31 18:10:01,359 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 80
[2022-01-31 18:10:01,359 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:10:01,359 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions.
[2022-01-31 18:10:01,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 36 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 18:10:01,360 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions.
[2022-01-31 18:10:01,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83
[2022-01-31 18:10:01,360 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:10:01,360 INFO L514 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:10:01,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35
[2022-01-31 18:10:01,360 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:10:01,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:10:01,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1027794137, now seen corresponding path program 34 times
[2022-01-31 18:10:01,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:10:01,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538046278]
[2022-01-31 18:10:01,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:10:01,362 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:10:01,362 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:10:01,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:10:01,364 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:10:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:01,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:10:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:01,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:10:01,951 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:10:01,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538046278]
[2022-01-31 18:10:01,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [538046278] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:10:01,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:10:01,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38
[2022-01-31 18:10:01,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716743208]
[2022-01-31 18:10:01,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:10:01,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states
[2022-01-31 18:10:01,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:10:01,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2022-01-31 18:10:01,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406
[2022-01-31 18:10:01,953 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand has 38 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 37 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 18:10:03,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:10:03,332 INFO L93 Difference]: Finished difference Result 239 states and 279 transitions.
[2022-01-31 18:10:03,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2022-01-31 18:10:03,333 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 37 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 82
[2022-01-31 18:10:03,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:10:03,333 INFO L225 Difference]: With dead ends: 239
[2022-01-31 18:10:03,333 INFO L226 Difference]: Without dead ends: 193
[2022-01-31 18:10:03,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256
[2022-01-31 18:10:03,334 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 161 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 18:10:03,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 33 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 18:10:03,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states.
[2022-01-31 18:10:03,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 88.
[2022-01-31 18:10:03,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 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 18:10:03,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions.
[2022-01-31 18:10:03,357 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 82
[2022-01-31 18:10:03,357 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:10:03,357 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions.
[2022-01-31 18:10:03,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 37 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 18:10:03,357 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions.
[2022-01-31 18:10:03,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85
[2022-01-31 18:10:03,358 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:10:03,358 INFO L514 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:10:03,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36
[2022-01-31 18:10:03,358 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:10:03,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:10:03,358 INFO L85 PathProgramCache]: Analyzing trace with hash -758103930, now seen corresponding path program 35 times
[2022-01-31 18:10:03,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:10:03,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251732513]
[2022-01-31 18:10:03,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:10:03,360 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:10:03,360 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:10:03,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:10:03,362 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:10:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:03,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:10:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:10:03,936 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:10:03,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251732513]
[2022-01-31 18:10:03,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [251732513] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:10:03,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:10:03,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39
[2022-01-31 18:10:03,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693835720]
[2022-01-31 18:10:03,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:10:03,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states
[2022-01-31 18:10:03,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:10:03,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants.
[2022-01-31 18:10:03,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482
[2022-01-31 18:10:03,938 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand has 39 states, 39 states have (on average 1.205128205128205) internal successors, (47), 38 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 18:10:05,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:10:05,330 INFO L93 Difference]: Finished difference Result 245 states and 286 transitions.
[2022-01-31 18:10:05,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2022-01-31 18:10:05,331 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.205128205128205) internal successors, (47), 38 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 84
[2022-01-31 18:10:05,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:10:05,332 INFO L225 Difference]: With dead ends: 245
[2022-01-31 18:10:05,332 INFO L226 Difference]: Without dead ends: 198
[2022-01-31 18:10:05,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550
[2022-01-31 18:10:05,332 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 171 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 546 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 18:10:05,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 33 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [546 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 18:10:05,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states.
[2022-01-31 18:10:05,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 90.
[2022-01-31 18:10:05,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 84 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 18:10:05,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions.
[2022-01-31 18:10:05,352 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 84
[2022-01-31 18:10:05,352 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:10:05,352 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions.
[2022-01-31 18:10:05,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.205128205128205) internal successors, (47), 38 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 18:10:05,352 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions.
[2022-01-31 18:10:05,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87
[2022-01-31 18:10:05,353 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:10:05,353 INFO L514 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:10:05,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37
[2022-01-31 18:10:05,353 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:10:05,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:10:05,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1893713401, now seen corresponding path program 36 times
[2022-01-31 18:10:05,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:10:05,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856183535]
[2022-01-31 18:10:05,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:10:05,354 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:10:05,354 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:10:05,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:10:05,357 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:10:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:05,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:10:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:05,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:10:05,979 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:10:05,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856183535]
[2022-01-31 18:10:05,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [856183535] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:10:05,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:10:05,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40
[2022-01-31 18:10:05,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923869059]
[2022-01-31 18:10:05,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:10:05,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states
[2022-01-31 18:10:05,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:10:05,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants.
[2022-01-31 18:10:05,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560
[2022-01-31 18:10:05,981 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand has 40 states, 40 states have (on average 1.2) internal successors, (48), 39 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 18:10:07,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:10:07,555 INFO L93 Difference]: Finished difference Result 251 states and 293 transitions.
[2022-01-31 18:10:07,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2022-01-31 18:10:07,555 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.2) internal successors, (48), 39 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 86
[2022-01-31 18:10:07,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:10:07,556 INFO L225 Difference]: With dead ends: 251
[2022-01-31 18:10:07,557 INFO L226 Difference]: Without dead ends: 203
[2022-01-31 18:10:07,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852
[2022-01-31 18:10:07,557 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 220 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 18:10:07,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 33 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 18:10:07,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states.
[2022-01-31 18:10:07,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 92.
[2022-01-31 18:10:07,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 86 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 18:10:07,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions.
[2022-01-31 18:10:07,582 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 86
[2022-01-31 18:10:07,582 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:10:07,582 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions.
[2022-01-31 18:10:07,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.2) internal successors, (48), 39 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 18:10:07,583 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions.
[2022-01-31 18:10:07,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89
[2022-01-31 18:10:07,583 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:10:07,583 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:10:07,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38
[2022-01-31 18:10:07,583 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:10:07,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:10:07,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1594023002, now seen corresponding path program 37 times
[2022-01-31 18:10:07,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:10:07,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700576361]
[2022-01-31 18:10:07,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:10:07,585 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:10:07,585 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:10:07,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:10:07,588 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:10:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:08,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:10:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:08,180 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 18:10:08,181 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:10:08,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700576361]
[2022-01-31 18:10:08,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [700576361] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:10:08,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:10:08,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41
[2022-01-31 18:10:08,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231306470]
[2022-01-31 18:10:08,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:10:08,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states
[2022-01-31 18:10:08,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:10:08,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants.
[2022-01-31 18:10:08,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640
[2022-01-31 18:10:08,182 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand has 41 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 40 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 18:10:09,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:10:09,849 INFO L93 Difference]: Finished difference Result 257 states and 300 transitions.
[2022-01-31 18:10:09,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2022-01-31 18:10:09,849 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 40 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 88
[2022-01-31 18:10:09,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:10:09,850 INFO L225 Difference]: With dead ends: 257
[2022-01-31 18:10:09,850 INFO L226 Difference]: Without dead ends: 208
[2022-01-31 18:10:09,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162
[2022-01-31 18:10:09,851 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 184 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 18:10:09,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 43 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 18:10:09,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states.
[2022-01-31 18:10:09,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 94.
[2022-01-31 18:10:09,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 88 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 18:10:09,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions.
[2022-01-31 18:10:09,878 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 88
[2022-01-31 18:10:09,878 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:10:09,879 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 96 transitions.
[2022-01-31 18:10:09,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 40 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 18:10:09,879 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 96 transitions.
[2022-01-31 18:10:09,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91
[2022-01-31 18:10:09,879 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:10:09,879 INFO L514 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:10:09,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39
[2022-01-31 18:10:09,880 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:10:09,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:10:09,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1169530649, now seen corresponding path program 38 times
[2022-01-31 18:10:09,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:10:09,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861900288]
[2022-01-31 18:10:09,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:10:09,881 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:10:09,881 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:10:09,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:10:09,884 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:10:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:10,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:10:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:10:10,528 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:10:10,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861900288]
[2022-01-31 18:10:10,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [861900288] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:10:10,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:10:10,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42
[2022-01-31 18:10:10,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062398005]
[2022-01-31 18:10:10,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:10:10,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states
[2022-01-31 18:10:10,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:10:10,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants.
[2022-01-31 18:10:10,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722
[2022-01-31 18:10:10,530 INFO L87 Difference]: Start difference. First operand 94 states and 96 transitions. Second operand has 42 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 41 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 18:10:12,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:10:12,301 INFO L93 Difference]: Finished difference Result 263 states and 307 transitions.
[2022-01-31 18:10:12,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2022-01-31 18:10:12,301 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 41 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 90
[2022-01-31 18:10:12,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:10:12,302 INFO L225 Difference]: With dead ends: 263
[2022-01-31 18:10:12,302 INFO L226 Difference]: Without dead ends: 213
[2022-01-31 18:10:12,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480
[2022-01-31 18:10:12,304 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 204 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 18:10:12,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 38 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 18:10:12,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states.
[2022-01-31 18:10:12,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 96.
[2022-01-31 18:10:12,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 90 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 18:10:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions.
[2022-01-31 18:10:12,325 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 90
[2022-01-31 18:10:12,325 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:10:12,325 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions.
[2022-01-31 18:10:12,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 41 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 18:10:12,325 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions.
[2022-01-31 18:10:12,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93
[2022-01-31 18:10:12,326 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:10:12,326 INFO L514 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:10:12,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40
[2022-01-31 18:10:12,326 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:10:12,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:10:12,327 INFO L85 PathProgramCache]: Analyzing trace with hash 180420294, now seen corresponding path program 39 times
[2022-01-31 18:10:12,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:10:12,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219096830]
[2022-01-31 18:10:12,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:10:12,328 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:10:12,328 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:10:12,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:10:12,331 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:10:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:12,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:10:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:12,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:10:12,971 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:10:12,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219096830]
[2022-01-31 18:10:12,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1219096830] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:10:12,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:10:12,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43
[2022-01-31 18:10:12,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794949618]
[2022-01-31 18:10:12,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:10:12,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states
[2022-01-31 18:10:12,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:10:12,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants.
[2022-01-31 18:10:12,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806
[2022-01-31 18:10:12,972 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand has 43 states, 43 states have (on average 1.186046511627907) internal successors, (51), 42 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 18:10:14,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:10:14,665 INFO L93 Difference]: Finished difference Result 269 states and 314 transitions.
[2022-01-31 18:10:14,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2022-01-31 18:10:14,665 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.186046511627907) internal successors, (51), 42 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 92
[2022-01-31 18:10:14,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:10:14,666 INFO L225 Difference]: With dead ends: 269
[2022-01-31 18:10:14,666 INFO L226 Difference]: Without dead ends: 218
[2022-01-31 18:10:14,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806
[2022-01-31 18:10:14,667 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 190 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 18:10:14,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 58 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 18:10:14,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states.
[2022-01-31 18:10:14,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 98.
[2022-01-31 18:10:14,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 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 18:10:14,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions.
[2022-01-31 18:10:14,694 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 92
[2022-01-31 18:10:14,694 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:10:14,694 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions.
[2022-01-31 18:10:14,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.186046511627907) internal successors, (51), 42 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 18:10:14,694 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions.
[2022-01-31 18:10:14,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95
[2022-01-31 18:10:14,694 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:10:14,694 INFO L514 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:10:14,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41
[2022-01-31 18:10:14,695 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:10:14,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:10:14,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1928957895, now seen corresponding path program 40 times
[2022-01-31 18:10:14,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:10:14,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550435905]
[2022-01-31 18:10:14,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:10:14,696 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:10:14,696 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:10:14,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:10:14,699 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:10:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:15,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:10:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:15,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:10:15,377 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:10:15,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550435905]
[2022-01-31 18:10:15,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [550435905] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:10:15,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:10:15,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44
[2022-01-31 18:10:15,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397631827]
[2022-01-31 18:10:15,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:10:15,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states
[2022-01-31 18:10:15,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:10:15,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants.
[2022-01-31 18:10:15,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892
[2022-01-31 18:10:15,379 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand has 44 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 43 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 18:10:17,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:10:17,163 INFO L93 Difference]: Finished difference Result 275 states and 321 transitions.
[2022-01-31 18:10:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2022-01-31 18:10:17,163 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 43 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 94
[2022-01-31 18:10:17,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:10:17,164 INFO L225 Difference]: With dead ends: 275
[2022-01-31 18:10:17,164 INFO L226 Difference]: Without dead ends: 223
[2022-01-31 18:10:17,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 859 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140
[2022-01-31 18:10:17,165 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 161 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 18:10:17,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 48 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 18:10:17,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states.
[2022-01-31 18:10:17,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 100.
[2022-01-31 18:10:17,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 94 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 18:10:17,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions.
[2022-01-31 18:10:17,188 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 94
[2022-01-31 18:10:17,188 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:10:17,188 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions.
[2022-01-31 18:10:17,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 43 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 18:10:17,188 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions.
[2022-01-31 18:10:17,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97
[2022-01-31 18:10:17,189 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:10:17,189 INFO L514 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:10:17,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42
[2022-01-31 18:10:17,189 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:10:17,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:10:17,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1298279962, now seen corresponding path program 41 times
[2022-01-31 18:10:17,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:10:17,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945156629]
[2022-01-31 18:10:17,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:10:17,191 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:10:17,191 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:10:17,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:10:17,194 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:10:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:17,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:10:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:10:17,899 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:10:17,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945156629]
[2022-01-31 18:10:17,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [945156629] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:10:17,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:10:17,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45
[2022-01-31 18:10:17,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476368192]
[2022-01-31 18:10:17,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:10:17,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states
[2022-01-31 18:10:17,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:10:17,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2022-01-31 18:10:17,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980
[2022-01-31 18:10:17,900 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand has 45 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 44 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 18:10:19,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:10:19,776 INFO L93 Difference]: Finished difference Result 281 states and 328 transitions.
[2022-01-31 18:10:19,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2022-01-31 18:10:19,776 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 44 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 96
[2022-01-31 18:10:19,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:10:19,777 INFO L225 Difference]: With dead ends: 281
[2022-01-31 18:10:19,777 INFO L226 Difference]: Without dead ends: 228
[2022-01-31 18:10:19,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2838, Invalid=4644, Unknown=0, NotChecked=0, Total=7482
[2022-01-31 18:10:19,778 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 172 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 559 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 18:10:19,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 43 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [559 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 18:10:19,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states.
[2022-01-31 18:10:19,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 102.
[2022-01-31 18:10:19,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 96 states have (on average 1.03125) internal successors, (99), 96 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 18:10:19,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions.
[2022-01-31 18:10:19,799 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 96
[2022-01-31 18:10:19,799 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:10:19,799 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions.
[2022-01-31 18:10:19,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 44 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 18:10:19,800 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions.
[2022-01-31 18:10:19,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-01-31 18:10:19,800 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:10:19,800 INFO L514 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:10:19,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43
[2022-01-31 18:10:19,801 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:10:19,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:10:19,801 INFO L85 PathProgramCache]: Analyzing trace with hash 7063207, now seen corresponding path program 42 times
[2022-01-31 18:10:19,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:10:19,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310665091]
[2022-01-31 18:10:19,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:10:19,802 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:10:19,802 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:10:19,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:10:19,806 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:10:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:20,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:10:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:20,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:10:20,584 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:10:20,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310665091]
[2022-01-31 18:10:20,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1310665091] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:10:20,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:10:20,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46
[2022-01-31 18:10:20,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715020501]
[2022-01-31 18:10:20,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:10:20,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states
[2022-01-31 18:10:20,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:10:20,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants.
[2022-01-31 18:10:20,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070
[2022-01-31 18:10:20,585 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand has 46 states, 46 states have (on average 1.173913043478261) internal successors, (54), 45 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 18:10:22,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:10:22,585 INFO L93 Difference]: Finished difference Result 287 states and 335 transitions.
[2022-01-31 18:10:22,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2022-01-31 18:10:22,585 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.173913043478261) internal successors, (54), 45 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 98
[2022-01-31 18:10:22,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:10:22,586 INFO L225 Difference]: With dead ends: 287
[2022-01-31 18:10:22,586 INFO L226 Difference]: Without dead ends: 233
[2022-01-31 18:10:22,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2970, Invalid=4862, Unknown=0, NotChecked=0, Total=7832
[2022-01-31 18:10:22,587 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 195 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 631 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 631 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-31 18:10:22,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 33 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [631 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-31 18:10:22,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states.
[2022-01-31 18:10:22,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 104.
[2022-01-31 18:10:22,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 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 18:10:22,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions.
[2022-01-31 18:10:22,617 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 98
[2022-01-31 18:10:22,617 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:10:22,617 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 106 transitions.
[2022-01-31 18:10:22,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.173913043478261) internal successors, (54), 45 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 18:10:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions.
[2022-01-31 18:10:22,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101
[2022-01-31 18:10:22,618 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:10:22,618 INFO L514 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:10:22,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44
[2022-01-31 18:10:22,618 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:10:22,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:10:22,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1922407686, now seen corresponding path program 43 times
[2022-01-31 18:10:22,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:10:22,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257985813]
[2022-01-31 18:10:22,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:10:22,620 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:10:22,620 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:10:22,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:10:22,623 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:10:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:23,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:10:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:23,384 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 18:10:23,384 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:10:23,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257985813]
[2022-01-31 18:10:23,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1257985813] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:10:23,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:10:23,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47
[2022-01-31 18:10:23,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301400868]
[2022-01-31 18:10:23,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:10:23,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states
[2022-01-31 18:10:23,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:10:23,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants.
[2022-01-31 18:10:23,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162
[2022-01-31 18:10:23,386 INFO L87 Difference]: Start difference. First operand 104 states and 106 transitions. Second operand has 47 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 46 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 18:10:25,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:10:25,598 INFO L93 Difference]: Finished difference Result 293 states and 342 transitions.
[2022-01-31 18:10:25,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2022-01-31 18:10:25,599 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 46 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 100
[2022-01-31 18:10:25,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:10:25,599 INFO L225 Difference]: With dead ends: 293
[2022-01-31 18:10:25,600 INFO L226 Difference]: Without dead ends: 238
[2022-01-31 18:10:25,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190
[2022-01-31 18:10:25,600 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 200 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-31 18:10:25,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 43 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-31 18:10:25,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states.
[2022-01-31 18:10:25,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 106.
[2022-01-31 18:10:25,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 100 states have (on average 1.03) internal successors, (103), 100 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 18:10:25,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions.
[2022-01-31 18:10:25,626 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 100
[2022-01-31 18:10:25,626 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:10:25,626 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 108 transitions.
[2022-01-31 18:10:25,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 46 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 18:10:25,626 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 108 transitions.
[2022-01-31 18:10:25,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103
[2022-01-31 18:10:25,626 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:10:25,626 INFO L514 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:10:25,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45
[2022-01-31 18:10:25,627 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:10:25,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:10:25,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1570830969, now seen corresponding path program 44 times
[2022-01-31 18:10:25,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:10:25,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609116543]
[2022-01-31 18:10:25,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:10:25,628 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:10:25,628 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:10:25,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:10:25,632 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:10:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:26,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:10:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:26,485 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 18:10:26,486 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:10:26,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609116543]
[2022-01-31 18:10:26,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [609116543] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:10:26,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:10:26,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48
[2022-01-31 18:10:26,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704292081]
[2022-01-31 18:10:26,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:10:26,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states
[2022-01-31 18:10:26,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:10:26,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants.
[2022-01-31 18:10:26,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256
[2022-01-31 18:10:26,487 INFO L87 Difference]: Start difference. First operand 106 states and 108 transitions. Second operand has 48 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 47 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 18:10:28,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:10:28,788 INFO L93 Difference]: Finished difference Result 299 states and 349 transitions.
[2022-01-31 18:10:28,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2022-01-31 18:10:28,789 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 47 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 102
[2022-01-31 18:10:28,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:10:28,790 INFO L225 Difference]: With dead ends: 299
[2022-01-31 18:10:28,790 INFO L226 Difference]: Without dead ends: 243
[2022-01-31 18:10:28,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3243, Invalid=5313, Unknown=0, NotChecked=0, Total=8556
[2022-01-31 18:10:28,791 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 199 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 646 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-31 18:10:28,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 28 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [646 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-31 18:10:28,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states.
[2022-01-31 18:10:28,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 108.
[2022-01-31 18:10:28,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 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 18:10:28,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions.
[2022-01-31 18:10:28,818 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 102
[2022-01-31 18:10:28,819 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:10:28,819 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions.
[2022-01-31 18:10:28,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 47 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 18:10:28,819 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions.
[2022-01-31 18:10:28,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105
[2022-01-31 18:10:28,819 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:10:28,819 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:10:28,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46
[2022-01-31 18:10:28,820 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:10:28,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:10:28,820 INFO L85 PathProgramCache]: Analyzing trace with hash 2083151910, now seen corresponding path program 45 times
[2022-01-31 18:10:28,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:10:28,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081329062]
[2022-01-31 18:10:28,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:10:28,821 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:10:28,821 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:10:28,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:10:28,825 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:10:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:29,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:10:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:29,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:10:29,660 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:10:29,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081329062]
[2022-01-31 18:10:29,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2081329062] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:10:29,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:10:29,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49
[2022-01-31 18:10:29,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503946834]
[2022-01-31 18:10:29,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:10:29,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states
[2022-01-31 18:10:29,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:10:29,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants.
[2022-01-31 18:10:29,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352
[2022-01-31 18:10:29,661 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand has 49 states, 49 states have (on average 1.163265306122449) internal successors, (57), 48 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 18:10:32,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:10:32,156 INFO L93 Difference]: Finished difference Result 305 states and 356 transitions.
[2022-01-31 18:10:32,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states.
[2022-01-31 18:10:32,157 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.163265306122449) internal successors, (57), 48 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 104
[2022-01-31 18:10:32,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:10:32,158 INFO L225 Difference]: With dead ends: 305
[2022-01-31 18:10:32,158 INFO L226 Difference]: Without dead ends: 248
[2022-01-31 18:10:32,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930
[2022-01-31 18:10:32,159 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 278 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 886 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 886 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-31 18:10:32,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 28 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [886 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-31 18:10:32,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states.
[2022-01-31 18:10:32,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 110.
[2022-01-31 18:10:32,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 104 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 18:10:32,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions.
[2022-01-31 18:10:32,195 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 104
[2022-01-31 18:10:32,195 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:10:32,195 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions.
[2022-01-31 18:10:32,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.163265306122449) internal successors, (57), 48 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 18:10:32,195 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions.
[2022-01-31 18:10:32,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107
[2022-01-31 18:10:32,195 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:10:32,195 INFO L514 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:10:32,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47
[2022-01-31 18:10:32,196 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:10:32,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:10:32,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1896959079, now seen corresponding path program 46 times
[2022-01-31 18:10:32,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:10:32,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620959233]
[2022-01-31 18:10:32,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:10:32,197 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:10:32,197 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:10:32,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:10:32,201 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:10:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:33,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:10:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:33,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:10:33,152 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:10:33,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620959233]
[2022-01-31 18:10:33,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [620959233] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:10:33,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:10:33,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50
[2022-01-31 18:10:33,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270753017]
[2022-01-31 18:10:33,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:10:33,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states
[2022-01-31 18:10:33,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:10:33,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants.
[2022-01-31 18:10:33,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450
[2022-01-31 18:10:33,154 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand has 50 states, 50 states have (on average 1.16) internal successors, (58), 49 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 18:10:35,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:10:35,749 INFO L93 Difference]: Finished difference Result 311 states and 363 transitions.
[2022-01-31 18:10:35,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2022-01-31 18:10:35,750 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.16) internal successors, (58), 49 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 106
[2022-01-31 18:10:35,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:10:35,751 INFO L225 Difference]: With dead ends: 311
[2022-01-31 18:10:35,751 INFO L226 Difference]: Without dead ends: 253
[2022-01-31 18:10:35,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3528, Invalid=5784, Unknown=0, NotChecked=0, Total=9312
[2022-01-31 18:10:35,752 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 225 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-31 18:10:35,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 53 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-31 18:10:35,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states.
[2022-01-31 18:10:35,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 112.
[2022-01-31 18:10:35,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 106 states have (on average 1.028301886792453) internal successors, (109), 106 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 18:10:35,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 114 transitions.
[2022-01-31 18:10:35,780 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 114 transitions. Word has length 106
[2022-01-31 18:10:35,780 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:10:35,780 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 114 transitions.
[2022-01-31 18:10:35,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.16) internal successors, (58), 49 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 18:10:35,781 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 114 transitions.
[2022-01-31 18:10:35,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109
[2022-01-31 18:10:35,781 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:10:35,781 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:10:35,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48
[2022-01-31 18:10:35,781 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:10:35,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:10:35,782 INFO L85 PathProgramCache]: Analyzing trace with hash 2019433286, now seen corresponding path program 47 times
[2022-01-31 18:10:35,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:10:35,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130595332]
[2022-01-31 18:10:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:10:35,783 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:10:35,783 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:10:35,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:10:35,787 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:10:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:36,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:10:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:36,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:10:36,770 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:10:36,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130595332]
[2022-01-31 18:10:36,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2130595332] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:10:36,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:10:36,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51
[2022-01-31 18:10:36,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370835878]
[2022-01-31 18:10:36,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:10:36,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states
[2022-01-31 18:10:36,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:10:36,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants.
[2022-01-31 18:10:36,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550
[2022-01-31 18:10:36,772 INFO L87 Difference]: Start difference. First operand 112 states and 114 transitions. Second operand has 51 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 50 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 18:10:39,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:10:39,453 INFO L93 Difference]: Finished difference Result 317 states and 370 transitions.
[2022-01-31 18:10:39,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states.
[2022-01-31 18:10:39,454 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 50 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 108
[2022-01-31 18:10:39,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:10:39,455 INFO L225 Difference]: With dead ends: 317
[2022-01-31 18:10:39,455 INFO L226 Difference]: Without dead ends: 258
[2022-01-31 18:10:39,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702
[2022-01-31 18:10:39,456 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 247 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 797 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 797 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-31 18:10:39,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 48 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [797 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-31 18:10:39,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states.
[2022-01-31 18:10:39,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 114.
[2022-01-31 18:10:39,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 108 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 18:10:39,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions.
[2022-01-31 18:10:39,488 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 108
[2022-01-31 18:10:39,488 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:10:39,488 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions.
[2022-01-31 18:10:39,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 50 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 18:10:39,489 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions.
[2022-01-31 18:10:39,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111
[2022-01-31 18:10:39,489 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:10:39,489 INFO L514 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:10:39,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49
[2022-01-31 18:10:39,490 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:10:39,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:10:39,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1027644231, now seen corresponding path program 48 times
[2022-01-31 18:10:39,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:10:39,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955407924]
[2022-01-31 18:10:39,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:10:39,491 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:10:39,491 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:10:39,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:10:39,495 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:10:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:40,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:10:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:10:40,422 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:10:40,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955407924]
[2022-01-31 18:10:40,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1955407924] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:10:40,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:10:40,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52
[2022-01-31 18:10:40,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800592486]
[2022-01-31 18:10:40,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:10:40,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states
[2022-01-31 18:10:40,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:10:40,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants.
[2022-01-31 18:10:40,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652
[2022-01-31 18:10:40,424 INFO L87 Difference]: Start difference. First operand 114 states and 116 transitions. Second operand has 52 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 51 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 18:10:43,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:10:43,290 INFO L93 Difference]: Finished difference Result 323 states and 377 transitions.
[2022-01-31 18:10:43,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states.
[2022-01-31 18:10:43,290 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 51 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 110
[2022-01-31 18:10:43,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:10:43,292 INFO L225 Difference]: With dead ends: 323
[2022-01-31 18:10:43,292 INFO L226 Difference]: Without dead ends: 263
[2022-01-31 18:10:43,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3825, Invalid=6275, Unknown=0, NotChecked=0, Total=10100
[2022-01-31 18:10:43,293 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 229 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-31 18:10:43,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 33 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-31 18:10:43,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states.
[2022-01-31 18:10:43,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 116.
[2022-01-31 18:10:43,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 110 states have (on average 1.0272727272727273) internal successors, (113), 110 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 18:10:43,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions.
[2022-01-31 18:10:43,342 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 110
[2022-01-31 18:10:43,342 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:10:43,342 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions.
[2022-01-31 18:10:43,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 51 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 18:10:43,342 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions.
[2022-01-31 18:10:43,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113
[2022-01-31 18:10:43,343 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:10:43,343 INFO L514 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:10:43,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50
[2022-01-31 18:10:43,343 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:10:43,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:10:43,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1481453978, now seen corresponding path program 49 times
[2022-01-31 18:10:43,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:10:43,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142060808]
[2022-01-31 18:10:43,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:10:43,345 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:10:43,345 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:10:43,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:10:43,350 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:10:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:44,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:10:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:44,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:10:44,386 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:10:44,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142060808]
[2022-01-31 18:10:44,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [142060808] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:10:44,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:10:44,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53
[2022-01-31 18:10:44,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346460207]
[2022-01-31 18:10:44,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:10:44,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states
[2022-01-31 18:10:44,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:10:44,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants.
[2022-01-31 18:10:44,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756
[2022-01-31 18:10:44,392 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand has 53 states, 53 states have (on average 1.150943396226415) internal successors, (61), 52 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 18:10:47,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:10:47,385 INFO L93 Difference]: Finished difference Result 329 states and 384 transitions.
[2022-01-31 18:10:47,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2022-01-31 18:10:47,386 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.150943396226415) internal successors, (61), 52 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 112
[2022-01-31 18:10:47,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:10:47,387 INFO L225 Difference]: With dead ends: 329
[2022-01-31 18:10:47,387 INFO L226 Difference]: Without dead ends: 268
[2022-01-31 18:10:47,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1273 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506
[2022-01-31 18:10:47,388 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 274 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 881 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 881 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-01-31 18:10:47,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 28 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [881 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2022-01-31 18:10:47,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states.
[2022-01-31 18:10:47,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 118.
[2022-01-31 18:10:47,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 112 states have (on average 1.0267857142857142) internal successors, (115), 112 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 18:10:47,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions.
[2022-01-31 18:10:47,440 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 112
[2022-01-31 18:10:47,440 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:10:47,440 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions.
[2022-01-31 18:10:47,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.150943396226415) internal successors, (61), 52 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 18:10:47,440 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions.
[2022-01-31 18:10:47,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115
[2022-01-31 18:10:47,441 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:10:47,441 INFO L514 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:10:47,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51
[2022-01-31 18:10:47,441 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:10:47,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:10:47,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1881862695, now seen corresponding path program 50 times
[2022-01-31 18:10:47,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:10:47,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930171859]
[2022-01-31 18:10:47,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:10:47,443 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:10:47,443 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:10:47,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:10:47,447 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:10:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:48,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:10:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:48,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:10:48,525 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:10:48,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930171859]
[2022-01-31 18:10:48,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1930171859] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:10:48,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:10:48,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54
[2022-01-31 18:10:48,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079122264]
[2022-01-31 18:10:48,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:10:48,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states
[2022-01-31 18:10:48,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:10:48,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants.
[2022-01-31 18:10:48,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862
[2022-01-31 18:10:48,527 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand has 54 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 53 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 18:10:51,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:10:51,695 INFO L93 Difference]: Finished difference Result 335 states and 391 transitions.
[2022-01-31 18:10:51,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states.
[2022-01-31 18:10:51,696 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 53 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 114
[2022-01-31 18:10:51,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:10:51,697 INFO L225 Difference]: With dead ends: 335
[2022-01-31 18:10:51,697 INFO L226 Difference]: Without dead ends: 273
[2022-01-31 18:10:51,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1324 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920
[2022-01-31 18:10:51,698 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 271 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-01-31 18:10:51,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 28 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2022-01-31 18:10:51,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states.
[2022-01-31 18:10:51,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 120.
[2022-01-31 18:10:51,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 114 states have (on average 1.0263157894736843) internal successors, (117), 114 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 18:10:51,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions.
[2022-01-31 18:10:51,741 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 114
[2022-01-31 18:10:51,741 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:10:51,741 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions.
[2022-01-31 18:10:51,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 53 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 18:10:51,741 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions.
[2022-01-31 18:10:51,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117
[2022-01-31 18:10:51,742 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:10:51,742 INFO L514 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:10:51,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52
[2022-01-31 18:10:51,742 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:10:51,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:10:51,742 INFO L85 PathProgramCache]: Analyzing trace with hash 36338054, now seen corresponding path program 51 times
[2022-01-31 18:10:51,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:10:51,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041643725]
[2022-01-31 18:10:51,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:10:51,744 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:10:51,744 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:10:51,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:10:51,749 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:10:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:52,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:10:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:52,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:10:52,768 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:10:52,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041643725]
[2022-01-31 18:10:52,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1041643725] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:10:52,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:10:52,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55
[2022-01-31 18:10:52,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78902076]
[2022-01-31 18:10:52,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:10:52,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states
[2022-01-31 18:10:52,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:10:52,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants.
[2022-01-31 18:10:52,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970
[2022-01-31 18:10:52,769 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand has 55 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 54 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 18:10:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:10:55,930 INFO L93 Difference]: Finished difference Result 341 states and 398 transitions.
[2022-01-31 18:10:55,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2022-01-31 18:10:55,931 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 54 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 116
[2022-01-31 18:10:55,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:10:55,932 INFO L225 Difference]: With dead ends: 341
[2022-01-31 18:10:55,932 INFO L226 Difference]: Without dead ends: 278
[2022-01-31 18:10:55,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342
[2022-01-31 18:10:55,933 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 248 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-31 18:10:55,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 48 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-31 18:10:55,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states.
[2022-01-31 18:10:55,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 122.
[2022-01-31 18:10:55,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 116 states have (on average 1.0258620689655173) internal successors, (119), 116 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 18:10:55,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions.
[2022-01-31 18:10:55,979 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 116
[2022-01-31 18:10:55,979 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:10:55,979 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions.
[2022-01-31 18:10:55,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 54 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 18:10:55,979 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions.
[2022-01-31 18:10:55,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119
[2022-01-31 18:10:55,980 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:10:55,980 INFO L514 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:10:55,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53
[2022-01-31 18:10:55,980 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:10:55,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:10:55,980 INFO L85 PathProgramCache]: Analyzing trace with hash -342994681, now seen corresponding path program 52 times
[2022-01-31 18:10:55,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:10:55,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927198724]
[2022-01-31 18:10:55,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:10:55,981 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:10:55,981 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:10:55,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:10:55,985 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:10:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:57,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:10:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:10:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:10:57,017 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:10:57,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927198724]
[2022-01-31 18:10:57,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1927198724] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:10:57,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:10:57,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56
[2022-01-31 18:10:57,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926026123]
[2022-01-31 18:10:57,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:10:57,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states
[2022-01-31 18:10:57,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:10:57,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants.
[2022-01-31 18:10:57,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080
[2022-01-31 18:10:57,019 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand has 56 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 55 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 18:11:00,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:11:00,203 INFO L93 Difference]: Finished difference Result 347 states and 405 transitions.
[2022-01-31 18:11:00,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states.
[2022-01-31 18:11:00,204 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 55 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 118
[2022-01-31 18:11:00,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:11:00,205 INFO L225 Difference]: With dead ends: 347
[2022-01-31 18:11:00,205 INFO L226 Difference]: Without dead ends: 283
[2022-01-31 18:11:00,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1429 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4455, Invalid=7317, Unknown=0, NotChecked=0, Total=11772
[2022-01-31 18:11:00,206 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 251 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 821 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 821 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-31 18:11:00,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 48 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [821 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-31 18:11:00,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states.
[2022-01-31 18:11:00,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 124.
[2022-01-31 18:11:00,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 118 states have (on average 1.0254237288135593) internal successors, (121), 118 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 18:11:00,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 126 transitions.
[2022-01-31 18:11:00,246 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 126 transitions. Word has length 118
[2022-01-31 18:11:00,246 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:11:00,246 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 126 transitions.
[2022-01-31 18:11:00,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 55 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 18:11:00,246 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 126 transitions.
[2022-01-31 18:11:00,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121
[2022-01-31 18:11:00,247 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:11:00,247 INFO L514 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:11:00,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54
[2022-01-31 18:11:00,247 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:11:00,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:11:00,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1464278182, now seen corresponding path program 53 times
[2022-01-31 18:11:00,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:11:00,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758726271]
[2022-01-31 18:11:00,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:11:00,248 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:11:00,249 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:11:00,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:11:00,253 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:11:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:01,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:11:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:01,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:11:01,279 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:11:01,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758726271]
[2022-01-31 18:11:01,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1758726271] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:11:01,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:11:01,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57
[2022-01-31 18:11:01,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306369561]
[2022-01-31 18:11:01,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:11:01,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states
[2022-01-31 18:11:01,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:11:01,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants.
[2022-01-31 18:11:01,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192
[2022-01-31 18:11:01,280 INFO L87 Difference]: Start difference. First operand 124 states and 126 transitions. Second operand has 57 states, 57 states have (on average 1.1403508771929824) internal successors, (65), 56 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 18:11:04,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:11:04,766 INFO L93 Difference]: Finished difference Result 353 states and 412 transitions.
[2022-01-31 18:11:04,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states.
[2022-01-31 18:11:04,766 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.1403508771929824) internal successors, (65), 56 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 120
[2022-01-31 18:11:04,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:11:04,767 INFO L225 Difference]: With dead ends: 353
[2022-01-31 18:11:04,767 INFO L226 Difference]: Without dead ends: 288
[2022-01-31 18:11:04,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1483 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4620, Invalid=7590, Unknown=0, NotChecked=0, Total=12210
[2022-01-31 18:11:04,768 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 265 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 862 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 862 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-01-31 18:11:04,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 33 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [862 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2022-01-31 18:11:04,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states.
[2022-01-31 18:11:04,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 126.
[2022-01-31 18:11:04,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 120 states have (on average 1.025) internal successors, (123), 120 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 18:11:04,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 128 transitions.
[2022-01-31 18:11:04,809 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 128 transitions. Word has length 120
[2022-01-31 18:11:04,810 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:11:04,810 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 128 transitions.
[2022-01-31 18:11:04,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.1403508771929824) internal successors, (65), 56 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 18:11:04,810 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 128 transitions.
[2022-01-31 18:11:04,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123
[2022-01-31 18:11:04,811 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:11:04,811 INFO L514 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:11:04,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55
[2022-01-31 18:11:04,811 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:11:04,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:11:04,811 INFO L85 PathProgramCache]: Analyzing trace with hash -374818841, now seen corresponding path program 54 times
[2022-01-31 18:11:04,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:11:04,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753520863]
[2022-01-31 18:11:04,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:11:04,813 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:11:04,813 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:11:04,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:11:04,818 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:11:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:05,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:11:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:05,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:11:05,923 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:11:05,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753520863]
[2022-01-31 18:11:05,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [753520863] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:11:05,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:11:05,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58
[2022-01-31 18:11:05,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449115599]
[2022-01-31 18:11:05,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:11:05,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states
[2022-01-31 18:11:05,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:11:05,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants.
[2022-01-31 18:11:05,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306
[2022-01-31 18:11:05,925 INFO L87 Difference]: Start difference. First operand 126 states and 128 transitions. Second operand has 58 states, 58 states have (on average 1.1379310344827587) internal successors, (66), 57 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 18:11:09,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:11:09,672 INFO L93 Difference]: Finished difference Result 359 states and 419 transitions.
[2022-01-31 18:11:09,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states.
[2022-01-31 18:11:09,672 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.1379310344827587) internal successors, (66), 57 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 122
[2022-01-31 18:11:09,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:11:09,680 INFO L225 Difference]: With dead ends: 359
[2022-01-31 18:11:09,680 INFO L226 Difference]: Without dead ends: 293
[2022-01-31 18:11:09,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1538 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4788, Invalid=7868, Unknown=0, NotChecked=0, Total=12656
[2022-01-31 18:11:09,682 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 276 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 897 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 897 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-01-31 18:11:09,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 33 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [897 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2022-01-31 18:11:09,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states.
[2022-01-31 18:11:09,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 128.
[2022-01-31 18:11:09,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 122 states have (on average 1.0245901639344261) internal successors, (125), 122 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 18:11:09,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions.
[2022-01-31 18:11:09,724 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 122
[2022-01-31 18:11:09,724 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:11:09,724 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions.
[2022-01-31 18:11:09,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.1379310344827587) internal successors, (66), 57 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 18:11:09,725 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions.
[2022-01-31 18:11:09,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125
[2022-01-31 18:11:09,725 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:11:09,725 INFO L514 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:11:09,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56
[2022-01-31 18:11:09,725 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:11:09,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:11:09,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1846196166, now seen corresponding path program 55 times
[2022-01-31 18:11:09,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:11:09,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261907217]
[2022-01-31 18:11:09,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:11:09,727 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:11:09,727 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:11:09,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:11:09,732 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:11:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:10,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:11:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:10,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:11:10,893 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:11:10,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261907217]
[2022-01-31 18:11:10,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1261907217] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:11:10,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:11:10,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59
[2022-01-31 18:11:10,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571941858]
[2022-01-31 18:11:10,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:11:10,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states
[2022-01-31 18:11:10,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:11:10,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants.
[2022-01-31 18:11:10,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422
[2022-01-31 18:11:10,895 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand has 59 states, 59 states have (on average 1.1355932203389831) internal successors, (67), 58 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 18:11:14,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:11:14,901 INFO L93 Difference]: Finished difference Result 365 states and 426 transitions.
[2022-01-31 18:11:14,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states.
[2022-01-31 18:11:14,902 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.1355932203389831) internal successors, (67), 58 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 124
[2022-01-31 18:11:14,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:11:14,903 INFO L225 Difference]: With dead ends: 365
[2022-01-31 18:11:14,903 INFO L226 Difference]: Without dead ends: 298
[2022-01-31 18:11:14,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110
[2022-01-31 18:11:14,904 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 249 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 818 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 818 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-01-31 18:11:14,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 43 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [818 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2022-01-31 18:11:14,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states.
[2022-01-31 18:11:14,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 130.
[2022-01-31 18:11:14,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 124 states have (on average 1.0241935483870968) internal successors, (127), 124 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 18:11:14,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions.
[2022-01-31 18:11:14,963 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 124
[2022-01-31 18:11:14,963 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:11:14,963 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions.
[2022-01-31 18:11:14,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.1355932203389831) internal successors, (67), 58 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 18:11:14,964 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions.
[2022-01-31 18:11:14,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127
[2022-01-31 18:11:14,964 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:11:14,964 INFO L514 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:11:14,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57
[2022-01-31 18:11:14,964 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:11:14,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:11:14,965 INFO L85 PathProgramCache]: Analyzing trace with hash -583522617, now seen corresponding path program 56 times
[2022-01-31 18:11:14,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:11:14,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785625169]
[2022-01-31 18:11:14,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:11:14,966 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:11:14,966 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:11:14,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:11:14,971 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:11:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:16,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:11:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:11:16,208 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:11:16,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785625169]
[2022-01-31 18:11:16,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1785625169] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:11:16,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:11:16,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60
[2022-01-31 18:11:16,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51345046]
[2022-01-31 18:11:16,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:11:16,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states
[2022-01-31 18:11:16,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:11:16,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants.
[2022-01-31 18:11:16,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540
[2022-01-31 18:11:16,210 INFO L87 Difference]: Start difference. First operand 130 states and 132 transitions. Second operand has 60 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 59 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 18:11:20,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:11:20,355 INFO L93 Difference]: Finished difference Result 371 states and 433 transitions.
[2022-01-31 18:11:20,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2022-01-31 18:11:20,355 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 59 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 126
[2022-01-31 18:11:20,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:11:20,357 INFO L225 Difference]: With dead ends: 371
[2022-01-31 18:11:20,357 INFO L226 Difference]: Without dead ends: 303
[2022-01-31 18:11:20,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1651 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5133, Invalid=8439, Unknown=0, NotChecked=0, Total=13572
[2022-01-31 18:11:20,358 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 271 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 886 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 886 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-01-31 18:11:20,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 43 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [886 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2022-01-31 18:11:20,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states.
[2022-01-31 18:11:20,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 132.
[2022-01-31 18:11:20,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 126 states have (on average 1.0238095238095237) internal successors, (129), 126 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 18:11:20,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 134 transitions.
[2022-01-31 18:11:20,421 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 134 transitions. Word has length 126
[2022-01-31 18:11:20,421 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:11:20,421 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 134 transitions.
[2022-01-31 18:11:20,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 59 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 18:11:20,421 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 134 transitions.
[2022-01-31 18:11:20,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129
[2022-01-31 18:11:20,422 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:11:20,422 INFO L514 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:11:20,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58
[2022-01-31 18:11:20,422 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:11:20,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:11:20,423 INFO L85 PathProgramCache]: Analyzing trace with hash 620186342, now seen corresponding path program 57 times
[2022-01-31 18:11:20,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:11:20,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376849408]
[2022-01-31 18:11:20,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:11:20,424 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:11:20,424 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:11:20,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:11:20,429 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:11:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:21,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:11:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:21,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:11:21,654 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:11:21,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376849408]
[2022-01-31 18:11:21,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1376849408] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:11:21,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:11:21,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61
[2022-01-31 18:11:21,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149949276]
[2022-01-31 18:11:21,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:11:21,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states
[2022-01-31 18:11:21,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:11:21,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants.
[2022-01-31 18:11:21,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660
[2022-01-31 18:11:21,656 INFO L87 Difference]: Start difference. First operand 132 states and 134 transitions. Second operand has 61 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 60 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 18:11:26,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:11:26,207 INFO L93 Difference]: Finished difference Result 377 states and 440 transitions.
[2022-01-31 18:11:26,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states.
[2022-01-31 18:11:26,208 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 60 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 128
[2022-01-31 18:11:26,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:11:26,209 INFO L225 Difference]: With dead ends: 377
[2022-01-31 18:11:26,209 INFO L226 Difference]: Without dead ends: 308
[2022-01-31 18:11:26,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1709 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5310, Invalid=8732, Unknown=0, NotChecked=0, Total=14042
[2022-01-31 18:11:26,210 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 281 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-01-31 18:11:26,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 38 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2022-01-31 18:11:26,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states.
[2022-01-31 18:11:26,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 134.
[2022-01-31 18:11:26,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 128 states have (on average 1.0234375) internal successors, (131), 128 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 18:11:26,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 136 transitions.
[2022-01-31 18:11:26,277 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 136 transitions. Word has length 128
[2022-01-31 18:11:26,277 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:11:26,278 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 136 transitions.
[2022-01-31 18:11:26,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 60 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 18:11:26,278 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 136 transitions.
[2022-01-31 18:11:26,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131
[2022-01-31 18:11:26,278 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:11:26,278 INFO L514 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:11:26,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59
[2022-01-31 18:11:26,278 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:11:26,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:11:26,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1366990247, now seen corresponding path program 58 times
[2022-01-31 18:11:26,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:11:26,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073656757]
[2022-01-31 18:11:26,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:11:26,280 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:11:26,280 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:11:26,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:11:26,284 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:11:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:27,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:11:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:27,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:11:27,547 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:11:27,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073656757]
[2022-01-31 18:11:27,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1073656757] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:11:27,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:11:27,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62
[2022-01-31 18:11:27,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069356408]
[2022-01-31 18:11:27,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:11:27,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states
[2022-01-31 18:11:27,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:11:27,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants.
[2022-01-31 18:11:27,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782
[2022-01-31 18:11:27,549 INFO L87 Difference]: Start difference. First operand 134 states and 136 transitions. Second operand has 62 states, 62 states have (on average 1.1290322580645162) internal successors, (70), 61 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 18:11:32,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:11:32,092 INFO L93 Difference]: Finished difference Result 383 states and 447 transitions.
[2022-01-31 18:11:32,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states.
[2022-01-31 18:11:32,092 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.1290322580645162) internal successors, (70), 61 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 130
[2022-01-31 18:11:32,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:11:32,094 INFO L225 Difference]: With dead ends: 383
[2022-01-31 18:11:32,094 INFO L226 Difference]: Without dead ends: 313
[2022-01-31 18:11:32,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1768 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=5490, Invalid=9030, Unknown=0, NotChecked=0, Total=14520
[2022-01-31 18:11:32,095 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 240 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 797 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 797 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-01-31 18:11:32,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 53 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [797 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2022-01-31 18:11:32,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states.
[2022-01-31 18:11:32,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 136.
[2022-01-31 18:11:32,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 130 states have (on average 1.023076923076923) internal successors, (133), 130 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 18:11:32,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 138 transitions.
[2022-01-31 18:11:32,141 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 138 transitions. Word has length 130
[2022-01-31 18:11:32,141 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:11:32,141 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 138 transitions.
[2022-01-31 18:11:32,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.1290322580645162) internal successors, (70), 61 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 18:11:32,142 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 138 transitions.
[2022-01-31 18:11:32,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133
[2022-01-31 18:11:32,142 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:11:32,142 INFO L514 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:11:32,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60
[2022-01-31 18:11:32,142 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:11:32,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:11:32,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1844521466, now seen corresponding path program 59 times
[2022-01-31 18:11:32,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:11:32,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620891343]
[2022-01-31 18:11:32,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:11:32,144 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:11:32,144 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:11:32,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:11:32,149 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:11:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:33,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:11:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:11:33,446 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:11:33,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620891343]
[2022-01-31 18:11:33,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [620891343] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:11:33,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:11:33,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63
[2022-01-31 18:11:33,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15083067]
[2022-01-31 18:11:33,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:11:33,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states
[2022-01-31 18:11:33,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:11:33,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants.
[2022-01-31 18:11:33,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906
[2022-01-31 18:11:33,447 INFO L87 Difference]: Start difference. First operand 136 states and 138 transitions. Second operand has 63 states, 63 states have (on average 1.126984126984127) internal successors, (71), 62 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 18:11:37,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:11:37,900 INFO L93 Difference]: Finished difference Result 389 states and 454 transitions.
[2022-01-31 18:11:37,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states.
[2022-01-31 18:11:37,901 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.126984126984127) internal successors, (71), 62 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 132
[2022-01-31 18:11:37,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:11:37,902 INFO L225 Difference]: With dead ends: 389
[2022-01-31 18:11:37,902 INFO L226 Difference]: Without dead ends: 318
[2022-01-31 18:11:37,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1828 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006
[2022-01-31 18:11:37,903 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 294 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 961 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 961 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-01-31 18:11:37,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 38 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [961 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2022-01-31 18:11:37,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states.
[2022-01-31 18:11:37,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 138.
[2022-01-31 18:11:37,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 132 states have (on average 1.0227272727272727) internal successors, (135), 132 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 18:11:37,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 140 transitions.
[2022-01-31 18:11:37,964 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 140 transitions. Word has length 132
[2022-01-31 18:11:37,964 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:11:37,964 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 140 transitions.
[2022-01-31 18:11:37,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.126984126984127) internal successors, (71), 62 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 18:11:37,964 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 140 transitions.
[2022-01-31 18:11:37,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135
[2022-01-31 18:11:37,965 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:11:37,965 INFO L514 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:11:37,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61
[2022-01-31 18:11:37,965 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:11:37,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:11:37,965 INFO L85 PathProgramCache]: Analyzing trace with hash -902947705, now seen corresponding path program 60 times
[2022-01-31 18:11:37,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:11:37,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093155566]
[2022-01-31 18:11:37,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:11:37,966 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:11:37,966 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:11:37,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:11:37,971 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:11:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:39,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:11:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:39,262 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 18:11:39,262 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:11:39,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093155566]
[2022-01-31 18:11:39,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2093155566] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:11:39,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:11:39,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64
[2022-01-31 18:11:39,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683897720]
[2022-01-31 18:11:39,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:11:39,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states
[2022-01-31 18:11:39,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:11:39,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants.
[2022-01-31 18:11:39,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032
[2022-01-31 18:11:39,264 INFO L87 Difference]: Start difference. First operand 138 states and 140 transitions. Second operand has 64 states, 64 states have (on average 1.125) internal successors, (72), 63 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 18:11:44,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:11:44,005 INFO L93 Difference]: Finished difference Result 395 states and 461 transitions.
[2022-01-31 18:11:44,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states.
[2022-01-31 18:11:44,005 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.125) internal successors, (72), 63 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 134
[2022-01-31 18:11:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:11:44,006 INFO L225 Difference]: With dead ends: 395
[2022-01-31 18:11:44,006 INFO L226 Difference]: Without dead ends: 323
[2022-01-31 18:11:44,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1889 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5859, Invalid=9641, Unknown=0, NotChecked=0, Total=15500
[2022-01-31 18:11:44,008 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 272 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 898 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-01-31 18:11:44,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 48 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [898 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2022-01-31 18:11:44,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states.
[2022-01-31 18:11:44,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 140.
[2022-01-31 18:11:44,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 134 states have (on average 1.0223880597014925) internal successors, (137), 134 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 18:11:44,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 142 transitions.
[2022-01-31 18:11:44,054 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 142 transitions. Word has length 134
[2022-01-31 18:11:44,054 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:11:44,054 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 142 transitions.
[2022-01-31 18:11:44,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.125) internal successors, (72), 63 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 18:11:44,054 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 142 transitions.
[2022-01-31 18:11:44,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137
[2022-01-31 18:11:44,054 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:11:44,054 INFO L514 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:11:44,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62
[2022-01-31 18:11:44,055 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:11:44,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:11:44,055 INFO L85 PathProgramCache]: Analyzing trace with hash 584276262, now seen corresponding path program 61 times
[2022-01-31 18:11:44,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:11:44,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154127384]
[2022-01-31 18:11:44,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:11:44,056 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:11:44,056 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:11:44,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:11:44,061 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:11:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:45,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:11:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:11:45,401 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:11:45,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154127384]
[2022-01-31 18:11:45,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1154127384] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:11:45,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:11:45,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65
[2022-01-31 18:11:45,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462521634]
[2022-01-31 18:11:45,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:11:45,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states
[2022-01-31 18:11:45,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:11:45,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants.
[2022-01-31 18:11:45,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160
[2022-01-31 18:11:45,404 INFO L87 Difference]: Start difference. First operand 140 states and 142 transitions. Second operand has 65 states, 65 states have (on average 1.123076923076923) internal successors, (73), 64 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 18:11:50,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:11:50,278 INFO L93 Difference]: Finished difference Result 401 states and 468 transitions.
[2022-01-31 18:11:50,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states.
[2022-01-31 18:11:50,278 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.123076923076923) internal successors, (73), 64 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 136
[2022-01-31 18:11:50,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:11:50,280 INFO L225 Difference]: With dead ends: 401
[2022-01-31 18:11:50,280 INFO L226 Difference]: Without dead ends: 328
[2022-01-31 18:11:50,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1951 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=6048, Invalid=9954, Unknown=0, NotChecked=0, Total=16002
[2022-01-31 18:11:50,281 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 316 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 1031 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1031 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-01-31 18:11:50,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 53 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1031 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2022-01-31 18:11:50,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states.
[2022-01-31 18:11:50,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 142.
[2022-01-31 18:11:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 136 states have (on average 1.0220588235294117) internal successors, (139), 136 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 18:11:50,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 144 transitions.
[2022-01-31 18:11:50,330 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 144 transitions. Word has length 136
[2022-01-31 18:11:50,330 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:11:50,330 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 144 transitions.
[2022-01-31 18:11:50,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.123076923076923) internal successors, (73), 64 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 18:11:50,330 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 144 transitions.
[2022-01-31 18:11:50,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139
[2022-01-31 18:11:50,331 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:11:50,331 INFO L514 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:11:50,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63
[2022-01-31 18:11:50,331 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:11:50,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:11:50,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1550802073, now seen corresponding path program 62 times
[2022-01-31 18:11:50,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:11:50,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24978180]
[2022-01-31 18:11:50,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:11:50,332 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:11:50,332 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:11:50,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:11:50,337 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:11:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:51,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:11:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:51,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:11:51,699 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:11:51,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24978180]
[2022-01-31 18:11:51,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [24978180] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:11:51,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:11:51,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66
[2022-01-31 18:11:51,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289270510]
[2022-01-31 18:11:51,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:11:51,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states
[2022-01-31 18:11:51,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:11:51,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants.
[2022-01-31 18:11:51,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290
[2022-01-31 18:11:51,701 INFO L87 Difference]: Start difference. First operand 142 states and 144 transitions. Second operand has 66 states, 66 states have (on average 1.121212121212121) internal successors, (74), 65 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 18:11:56,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:11:56,826 INFO L93 Difference]: Finished difference Result 407 states and 475 transitions.
[2022-01-31 18:11:56,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states.
[2022-01-31 18:11:56,826 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.121212121212121) internal successors, (74), 65 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 138
[2022-01-31 18:11:56,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:11:56,827 INFO L225 Difference]: With dead ends: 407
[2022-01-31 18:11:56,827 INFO L226 Difference]: Without dead ends: 333
[2022-01-31 18:11:56,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2014 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=6240, Invalid=10272, Unknown=0, NotChecked=0, Total=16512
[2022-01-31 18:11:56,828 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 300 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 985 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 985 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-01-31 18:11:56,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 58 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [985 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2022-01-31 18:11:56,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states.
[2022-01-31 18:11:56,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 144.
[2022-01-31 18:11:56,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 138 states have (on average 1.0217391304347827) internal successors, (141), 138 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 18:11:56,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 146 transitions.
[2022-01-31 18:11:56,881 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 146 transitions. Word has length 138
[2022-01-31 18:11:56,881 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:11:56,881 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 146 transitions.
[2022-01-31 18:11:56,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.121212121212121) internal successors, (74), 65 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 18:11:56,882 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 146 transitions.
[2022-01-31 18:11:56,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141
[2022-01-31 18:11:56,882 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:11:56,882 INFO L514 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:11:56,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64
[2022-01-31 18:11:56,882 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:11:56,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:11:56,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1136208826, now seen corresponding path program 63 times
[2022-01-31 18:11:56,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:11:56,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365281791]
[2022-01-31 18:11:56,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:11:56,884 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:11:56,884 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:11:56,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:11:56,889 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:11:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:58,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:11:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:11:58,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:11:58,314 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:11:58,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365281791]
[2022-01-31 18:11:58,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [365281791] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:11:58,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:11:58,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67
[2022-01-31 18:11:58,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684037596]
[2022-01-31 18:11:58,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:11:58,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states
[2022-01-31 18:11:58,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:11:58,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants.
[2022-01-31 18:11:58,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422
[2022-01-31 18:11:58,316 INFO L87 Difference]: Start difference. First operand 144 states and 146 transitions. Second operand has 67 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 66 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 18:12:03,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:12:03,632 INFO L93 Difference]: Finished difference Result 413 states and 482 transitions.
[2022-01-31 18:12:03,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states.
[2022-01-31 18:12:03,633 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 66 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 140
[2022-01-31 18:12:03,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:12:03,634 INFO L225 Difference]: With dead ends: 413
[2022-01-31 18:12:03,634 INFO L226 Difference]: Without dead ends: 338
[2022-01-31 18:12:03,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2078 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030
[2022-01-31 18:12:03,636 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 356 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 1157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1157 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-01-31 18:12:03,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 33 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1157 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2022-01-31 18:12:03,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states.
[2022-01-31 18:12:03,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 146.
[2022-01-31 18:12:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 140 states have (on average 1.0214285714285714) internal successors, (143), 140 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 18:12:03,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions.
[2022-01-31 18:12:03,731 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 140
[2022-01-31 18:12:03,732 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:12:03,732 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 148 transitions.
[2022-01-31 18:12:03,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 66 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 18:12:03,732 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 148 transitions.
[2022-01-31 18:12:03,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2022-01-31 18:12:03,732 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:12:03,733 INFO L514 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:12:03,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65
[2022-01-31 18:12:03,733 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:12:03,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:12:03,733 INFO L85 PathProgramCache]: Analyzing trace with hash -228576697, now seen corresponding path program 64 times
[2022-01-31 18:12:03,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:12:03,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047422348]
[2022-01-31 18:12:03,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:12:03,734 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:12:03,734 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:12:03,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:12:03,740 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:12:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:12:05,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:12:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:12:05,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:12:05,222 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:12:05,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047422348]
[2022-01-31 18:12:05,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1047422348] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:12:05,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:12:05,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68
[2022-01-31 18:12:05,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620095887]
[2022-01-31 18:12:05,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:12:05,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states
[2022-01-31 18:12:05,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:12:05,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants.
[2022-01-31 18:12:05,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556
[2022-01-31 18:12:05,224 INFO L87 Difference]: Start difference. First operand 146 states and 148 transitions. Second operand has 68 states, 68 states have (on average 1.1176470588235294) internal successors, (76), 67 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 18:12:10,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:12:10,563 INFO L93 Difference]: Finished difference Result 419 states and 489 transitions.
[2022-01-31 18:12:10,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states.
[2022-01-31 18:12:10,563 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.1176470588235294) internal successors, (76), 67 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 142
[2022-01-31 18:12:10,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:12:10,564 INFO L225 Difference]: With dead ends: 419
[2022-01-31 18:12:10,564 INFO L226 Difference]: Without dead ends: 343
[2022-01-31 18:12:10,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2143 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=6633, Invalid=10923, Unknown=0, NotChecked=0, Total=17556
[2022-01-31 18:12:10,566 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 331 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 1083 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1083 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-01-31 18:12:10,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 43 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1083 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2022-01-31 18:12:10,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states.
[2022-01-31 18:12:10,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 148.
[2022-01-31 18:12:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 142 states have (on average 1.0211267605633803) internal successors, (145), 142 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 18:12:10,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions.
[2022-01-31 18:12:10,643 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 142
[2022-01-31 18:12:10,643 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:12:10,643 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions.
[2022-01-31 18:12:10,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.1176470588235294) internal successors, (76), 67 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 18:12:10,643 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions.
[2022-01-31 18:12:10,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145
[2022-01-31 18:12:10,644 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:12:10,644 INFO L514 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:12:10,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66
[2022-01-31 18:12:10,644 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:12:10,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:12:10,644 INFO L85 PathProgramCache]: Analyzing trace with hash -622114970, now seen corresponding path program 65 times
[2022-01-31 18:12:10,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:12:10,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295323208]
[2022-01-31 18:12:10,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:12:10,646 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:12:10,646 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:12:10,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:12:10,651 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:12:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:12:12,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:12:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:12:12,168 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 18:12:12,169 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:12:12,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295323208]
[2022-01-31 18:12:12,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1295323208] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:12:12,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:12:12,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69
[2022-01-31 18:12:12,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844207976]
[2022-01-31 18:12:12,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:12:12,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states
[2022-01-31 18:12:12,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:12:12,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants.
[2022-01-31 18:12:12,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692
[2022-01-31 18:12:12,171 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand has 69 states, 69 states have (on average 1.1159420289855073) internal successors, (77), 68 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 18:12:18,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:12:18,062 INFO L93 Difference]: Finished difference Result 425 states and 496 transitions.
[2022-01-31 18:12:18,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states.
[2022-01-31 18:12:18,062 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.1159420289855073) internal successors, (77), 68 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 144
[2022-01-31 18:12:18,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:12:18,063 INFO L225 Difference]: With dead ends: 425
[2022-01-31 18:12:18,063 INFO L226 Difference]: Without dead ends: 348
[2022-01-31 18:12:18,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2209 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=6834, Invalid=11256, Unknown=0, NotChecked=0, Total=18090
[2022-01-31 18:12:18,065 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 316 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 1042 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1042 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-01-31 18:12:18,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 53 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1042 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2022-01-31 18:12:18,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states.
[2022-01-31 18:12:18,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 150.
[2022-01-31 18:12:18,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 144 states have (on average 1.0208333333333333) internal successors, (147), 144 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 18:12:18,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 152 transitions.
[2022-01-31 18:12:18,120 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 152 transitions. Word has length 144
[2022-01-31 18:12:18,121 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:12:18,121 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 152 transitions.
[2022-01-31 18:12:18,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.1159420289855073) internal successors, (77), 68 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 18:12:18,121 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 152 transitions.
[2022-01-31 18:12:18,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2022-01-31 18:12:18,121 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:12:18,121 INFO L514 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:12:18,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67
[2022-01-31 18:12:18,121 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:12:18,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:12:18,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1675282727, now seen corresponding path program 66 times
[2022-01-31 18:12:18,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:12:18,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167747394]
[2022-01-31 18:12:18,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:12:18,123 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:12:18,123 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:12:18,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:12:18,127 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:12:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:12:19,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:12:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:12:19,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:12:19,657 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:12:19,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167747394]
[2022-01-31 18:12:19,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [167747394] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:12:19,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:12:19,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70
[2022-01-31 18:12:19,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093699044]
[2022-01-31 18:12:19,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:12:19,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states
[2022-01-31 18:12:19,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:12:19,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants.
[2022-01-31 18:12:19,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830
[2022-01-31 18:12:19,661 INFO L87 Difference]: Start difference. First operand 150 states and 152 transitions. Second operand has 70 states, 70 states have (on average 1.1142857142857143) internal successors, (78), 69 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 18:12:25,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:12:25,529 INFO L93 Difference]: Finished difference Result 431 states and 503 transitions.
[2022-01-31 18:12:25,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states.
[2022-01-31 18:12:25,530 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.1142857142857143) internal successors, (78), 69 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 146
[2022-01-31 18:12:25,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:12:25,531 INFO L225 Difference]: With dead ends: 431
[2022-01-31 18:12:25,531 INFO L226 Difference]: Without dead ends: 353
[2022-01-31 18:12:25,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2276 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=7038, Invalid=11594, Unknown=0, NotChecked=0, Total=18632
[2022-01-31 18:12:25,532 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 355 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 1158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1158 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-01-31 18:12:25,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 33 Invalid, 1784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1158 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2022-01-31 18:12:25,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states.
[2022-01-31 18:12:25,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 152.
[2022-01-31 18:12:25,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 146 states have (on average 1.0205479452054795) internal successors, (149), 146 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 18:12:25,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 154 transitions.
[2022-01-31 18:12:25,622 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 154 transitions. Word has length 146
[2022-01-31 18:12:25,622 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:12:25,623 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 154 transitions.
[2022-01-31 18:12:25,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.1142857142857143) internal successors, (78), 69 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 18:12:25,623 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 154 transitions.
[2022-01-31 18:12:25,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149
[2022-01-31 18:12:25,623 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:12:25,623 INFO L514 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:12:25,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68
[2022-01-31 18:12:25,624 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:12:25,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:12:25,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1295863162, now seen corresponding path program 67 times
[2022-01-31 18:12:25,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:12:25,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197180451]
[2022-01-31 18:12:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:12:25,625 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:12:25,625 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:12:25,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:12:25,631 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:12:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:12:27,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:12:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:12:27,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:12:27,231 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:12:27,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197180451]
[2022-01-31 18:12:27,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [197180451] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:12:27,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:12:27,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71
[2022-01-31 18:12:27,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203939062]
[2022-01-31 18:12:27,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:12:27,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states
[2022-01-31 18:12:27,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:12:27,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants.
[2022-01-31 18:12:27,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970
[2022-01-31 18:12:27,233 INFO L87 Difference]: Start difference. First operand 152 states and 154 transitions. Second operand has 71 states, 71 states have (on average 1.1126760563380282) internal successors, (79), 70 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 18:12:33,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:12:33,835 INFO L93 Difference]: Finished difference Result 437 states and 510 transitions.
[2022-01-31 18:12:33,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states.
[2022-01-31 18:12:33,835 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.1126760563380282) internal successors, (79), 70 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 148
[2022-01-31 18:12:33,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:12:33,836 INFO L225 Difference]: With dead ends: 437
[2022-01-31 18:12:33,837 INFO L226 Difference]: Without dead ends: 358
[2022-01-31 18:12:33,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2344 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182
[2022-01-31 18:12:33,838 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 389 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 1262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1262 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-01-31 18:12:33,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 38 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1262 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-01-31 18:12:33,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states.
[2022-01-31 18:12:33,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 154.
[2022-01-31 18:12:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 148 states have (on average 1.0202702702702702) internal successors, (151), 148 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 18:12:33,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 156 transitions.
[2022-01-31 18:12:33,902 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 156 transitions. Word has length 148
[2022-01-31 18:12:33,902 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:12:33,902 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 156 transitions.
[2022-01-31 18:12:33,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.1126760563380282) internal successors, (79), 70 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 18:12:33,902 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 156 transitions.
[2022-01-31 18:12:33,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151
[2022-01-31 18:12:33,903 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:12:33,903 INFO L514 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:12:33,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69
[2022-01-31 18:12:33,903 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:12:33,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:12:33,903 INFO L85 PathProgramCache]: Analyzing trace with hash 499017735, now seen corresponding path program 68 times
[2022-01-31 18:12:33,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:12:33,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961637320]
[2022-01-31 18:12:33,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:12:33,904 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:12:33,905 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:12:33,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:12:33,911 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:12:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:12:35,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:12:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:12:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:12:35,564 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:12:35,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961637320]
[2022-01-31 18:12:35,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1961637320] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:12:35,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:12:35,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72
[2022-01-31 18:12:35,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870415810]
[2022-01-31 18:12:35,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:12:35,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states
[2022-01-31 18:12:35,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:12:35,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants.
[2022-01-31 18:12:35,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112
[2022-01-31 18:12:35,566 INFO L87 Difference]: Start difference. First operand 154 states and 156 transitions. Second operand has 72 states, 72 states have (on average 1.1111111111111112) internal successors, (80), 71 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 18:12:41,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:12:41,966 INFO L93 Difference]: Finished difference Result 443 states and 517 transitions.
[2022-01-31 18:12:41,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states.
[2022-01-31 18:12:41,966 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.1111111111111112) internal successors, (80), 71 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 150
[2022-01-31 18:12:41,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:12:41,967 INFO L225 Difference]: With dead ends: 443
[2022-01-31 18:12:41,967 INFO L226 Difference]: Without dead ends: 363
[2022-01-31 18:12:41,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2413 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=7455, Invalid=12285, Unknown=0, NotChecked=0, Total=19740
[2022-01-31 18:12:41,969 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 341 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 1120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1120 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-01-31 18:12:41,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 38 Invalid, 1742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1120 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2022-01-31 18:12:41,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states.
[2022-01-31 18:12:42,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 156.
[2022-01-31 18:12:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 150 states have (on average 1.02) internal successors, (153), 150 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 18:12:42,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 158 transitions.
[2022-01-31 18:12:42,028 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 158 transitions. Word has length 150
[2022-01-31 18:12:42,028 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:12:42,028 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 158 transitions.
[2022-01-31 18:12:42,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.1111111111111112) internal successors, (80), 71 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 18:12:42,029 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 158 transitions.
[2022-01-31 18:12:42,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153
[2022-01-31 18:12:42,029 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:12:42,029 INFO L514 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:12:42,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70
[2022-01-31 18:12:42,029 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:12:42,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:12:42,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1330582950, now seen corresponding path program 69 times
[2022-01-31 18:12:42,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:12:42,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821652283]
[2022-01-31 18:12:42,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:12:42,030 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:12:42,030 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:12:42,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:12:42,035 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:12:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:12:43,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:12:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:12:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:12:43,723 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:12:43,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821652283]
[2022-01-31 18:12:43,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [821652283] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:12:43,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:12:43,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73
[2022-01-31 18:12:43,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645360322]
[2022-01-31 18:12:43,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:12:43,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states
[2022-01-31 18:12:43,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:12:43,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants.
[2022-01-31 18:12:43,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256
[2022-01-31 18:12:43,725 INFO L87 Difference]: Start difference. First operand 156 states and 158 transitions. Second operand has 73 states, 73 states have (on average 1.1095890410958904) internal successors, (81), 72 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 18:12:50,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:12:50,799 INFO L93 Difference]: Finished difference Result 449 states and 524 transitions.
[2022-01-31 18:12:50,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states.
[2022-01-31 18:12:50,800 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.1095890410958904) internal successors, (81), 72 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 152
[2022-01-31 18:12:50,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:12:50,801 INFO L225 Difference]: With dead ends: 449
[2022-01-31 18:12:50,801 INFO L226 Difference]: Without dead ends: 368
[2022-01-31 18:12:50,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2483 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=7668, Invalid=12638, Unknown=0, NotChecked=0, Total=20306
[2022-01-31 18:12:50,803 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 332 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 1096 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1096 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-01-31 18:12:50,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 53 Invalid, 1778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1096 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-01-31 18:12:50,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states.
[2022-01-31 18:12:50,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 158.
[2022-01-31 18:12:50,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 152 states have (on average 1.019736842105263) internal successors, (155), 152 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 18:12:50,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 160 transitions.
[2022-01-31 18:12:50,875 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 160 transitions. Word has length 152
[2022-01-31 18:12:50,875 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:12:50,875 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 160 transitions.
[2022-01-31 18:12:50,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.1095890410958904) internal successors, (81), 72 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 18:12:50,875 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 160 transitions.
[2022-01-31 18:12:50,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155
[2022-01-31 18:12:50,875 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:12:50,876 INFO L514 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:12:50,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71
[2022-01-31 18:12:50,876 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:12:50,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:12:50,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1639379225, now seen corresponding path program 70 times
[2022-01-31 18:12:50,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:12:50,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052892168]
[2022-01-31 18:12:50,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:12:50,877 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:12:50,877 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:12:50,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:12:50,883 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:12:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:12:52,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:12:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:12:52,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:12:52,627 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:12:52,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052892168]
[2022-01-31 18:12:52,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2052892168] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:12:52,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:12:52,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74
[2022-01-31 18:12:52,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292439013]
[2022-01-31 18:12:52,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:12:52,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states
[2022-01-31 18:12:52,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:12:52,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants.
[2022-01-31 18:12:52,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402
[2022-01-31 18:12:52,630 INFO L87 Difference]: Start difference. First operand 158 states and 160 transitions. Second operand has 74 states, 74 states have (on average 1.1081081081081081) internal successors, (82), 73 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 18:13:00,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:13:00,089 INFO L93 Difference]: Finished difference Result 455 states and 531 transitions.
[2022-01-31 18:13:00,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states.
[2022-01-31 18:13:00,089 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.1081081081081081) internal successors, (82), 73 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 154
[2022-01-31 18:13:00,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:13:00,091 INFO L225 Difference]: With dead ends: 455
[2022-01-31 18:13:00,091 INFO L226 Difference]: Without dead ends: 373
[2022-01-31 18:13:00,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2554 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=7884, Invalid=12996, Unknown=0, NotChecked=0, Total=20880
[2022-01-31 18:13:00,093 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 365 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 1197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1197 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-01-31 18:13:00,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 43 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1197 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-01-31 18:13:00,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states.
[2022-01-31 18:13:00,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 160.
[2022-01-31 18:13:00,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 154 states have (on average 1.0194805194805194) internal successors, (157), 154 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 18:13:00,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 162 transitions.
[2022-01-31 18:13:00,193 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 162 transitions. Word has length 154
[2022-01-31 18:13:00,193 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:13:00,193 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 162 transitions.
[2022-01-31 18:13:00,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.1081081081081081) internal successors, (82), 73 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 18:13:00,194 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 162 transitions.
[2022-01-31 18:13:00,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2022-01-31 18:13:00,194 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:13:00,194 INFO L514 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:13:00,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72
[2022-01-31 18:13:00,195 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:13:00,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:13:00,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1282248506, now seen corresponding path program 71 times
[2022-01-31 18:13:00,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:13:00,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430972480]
[2022-01-31 18:13:00,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:13:00,201 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:13:00,201 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:13:00,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:13:00,209 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:13:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:13:02,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:13:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:13:02,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:13:02,041 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:13:02,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430972480]
[2022-01-31 18:13:02,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1430972480] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:13:02,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:13:02,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75
[2022-01-31 18:13:02,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386507896]
[2022-01-31 18:13:02,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:13:02,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states
[2022-01-31 18:13:02,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:13:02,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants.
[2022-01-31 18:13:02,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550
[2022-01-31 18:13:02,043 INFO L87 Difference]: Start difference. First operand 160 states and 162 transitions. Second operand has 75 states, 75 states have (on average 1.1066666666666667) internal successors, (83), 74 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 18:13:09,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:13:09,853 INFO L93 Difference]: Finished difference Result 461 states and 538 transitions.
[2022-01-31 18:13:09,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states.
[2022-01-31 18:13:09,854 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.1066666666666667) internal successors, (83), 74 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 156
[2022-01-31 18:13:09,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:13:09,855 INFO L225 Difference]: With dead ends: 461
[2022-01-31 18:13:09,855 INFO L226 Difference]: Without dead ends: 378
[2022-01-31 18:13:09,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2626 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462
[2022-01-31 18:13:09,856 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 304 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 1020 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1020 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-01-31 18:13:09,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 58 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1020 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-01-31 18:13:09,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states.
[2022-01-31 18:13:09,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 162.
[2022-01-31 18:13:09,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 156 states have (on average 1.0192307692307692) internal successors, (159), 156 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 18:13:09,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 164 transitions.
[2022-01-31 18:13:09,930 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 164 transitions. Word has length 156
[2022-01-31 18:13:09,930 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:13:09,930 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 164 transitions.
[2022-01-31 18:13:09,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.1066666666666667) internal successors, (83), 74 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 18:13:09,931 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 164 transitions.
[2022-01-31 18:13:09,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159
[2022-01-31 18:13:09,931 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:13:09,931 INFO L514 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:13:09,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73
[2022-01-31 18:13:09,931 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:13:09,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:13:09,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1674003001, now seen corresponding path program 72 times
[2022-01-31 18:13:09,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:13:09,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662208959]
[2022-01-31 18:13:09,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:13:09,933 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:13:09,933 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:13:09,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:13:09,941 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:13:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:13:11,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:13:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:13:11,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:13:11,764 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:13:11,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662208959]
[2022-01-31 18:13:11,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [662208959] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:13:11,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:13:11,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76
[2022-01-31 18:13:11,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832602308]
[2022-01-31 18:13:11,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:13:11,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states
[2022-01-31 18:13:11,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:13:11,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants.
[2022-01-31 18:13:11,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700
[2022-01-31 18:13:11,766 INFO L87 Difference]: Start difference. First operand 162 states and 164 transitions. Second operand has 76 states, 76 states have (on average 1.105263157894737) internal successors, (84), 75 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 18:13:19,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:13:19,736 INFO L93 Difference]: Finished difference Result 467 states and 545 transitions.
[2022-01-31 18:13:19,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states.
[2022-01-31 18:13:19,736 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.105263157894737) internal successors, (84), 75 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 158
[2022-01-31 18:13:19,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:13:19,738 INFO L225 Difference]: With dead ends: 467
[2022-01-31 18:13:19,738 INFO L226 Difference]: Without dead ends: 383
[2022-01-31 18:13:19,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2699 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=8325, Invalid=13727, Unknown=0, NotChecked=0, Total=22052
[2022-01-31 18:13:19,739 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 305 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 1024 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1024 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-01-31 18:13:19,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 53 Invalid, 1830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1024 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-01-31 18:13:19,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states.
[2022-01-31 18:13:19,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 164.
[2022-01-31 18:13:19,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 158 states have (on average 1.018987341772152) internal successors, (161), 158 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 18:13:19,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 166 transitions.
[2022-01-31 18:13:19,824 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 166 transitions. Word has length 158
[2022-01-31 18:13:19,824 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:13:19,824 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 166 transitions.
[2022-01-31 18:13:19,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.105263157894737) internal successors, (84), 75 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 18:13:19,824 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 166 transitions.
[2022-01-31 18:13:19,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161
[2022-01-31 18:13:19,825 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:13:19,825 INFO L514 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:13:19,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74
[2022-01-31 18:13:19,825 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:13:19,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:13:19,826 INFO L85 PathProgramCache]: Analyzing trace with hash -99695642, now seen corresponding path program 73 times
[2022-01-31 18:13:19,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:13:19,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45212596]
[2022-01-31 18:13:19,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:13:19,827 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:13:19,827 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:13:19,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:13:19,835 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:13:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:13:21,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:13:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:13:21,713 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 18:13:21,713 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:13:21,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45212596]
[2022-01-31 18:13:21,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [45212596] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:13:21,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:13:21,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77
[2022-01-31 18:13:21,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113806403]
[2022-01-31 18:13:21,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:13:21,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states
[2022-01-31 18:13:21,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:13:21,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants.
[2022-01-31 18:13:21,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852
[2022-01-31 18:13:21,715 INFO L87 Difference]: Start difference. First operand 164 states and 166 transitions. Second operand has 77 states, 77 states have (on average 1.103896103896104) internal successors, (85), 76 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 18:13:29,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:13:29,981 INFO L93 Difference]: Finished difference Result 473 states and 552 transitions.
[2022-01-31 18:13:29,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states.
[2022-01-31 18:13:29,982 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.103896103896104) internal successors, (85), 76 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 160
[2022-01-31 18:13:29,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:13:29,983 INFO L225 Difference]: With dead ends: 473
[2022-01-31 18:13:29,983 INFO L226 Difference]: Without dead ends: 388
[2022-01-31 18:13:29,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2773 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=8550, Invalid=14100, Unknown=0, NotChecked=0, Total=22650
[2022-01-31 18:13:29,985 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 340 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 1128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1128 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-01-31 18:13:29,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 43 Invalid, 1867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1128 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-01-31 18:13:29,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states.
[2022-01-31 18:13:30,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 166.
[2022-01-31 18:13:30,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 160 states have (on average 1.01875) internal successors, (163), 160 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 18:13:30,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 168 transitions.
[2022-01-31 18:13:30,073 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 168 transitions. Word has length 160
[2022-01-31 18:13:30,073 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:13:30,074 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 168 transitions.
[2022-01-31 18:13:30,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.103896103896104) internal successors, (85), 76 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 18:13:30,074 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 168 transitions.
[2022-01-31 18:13:30,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163
[2022-01-31 18:13:30,074 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:13:30,075 INFO L514 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:13:30,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75
[2022-01-31 18:13:30,075 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:13:30,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:13:30,075 INFO L85 PathProgramCache]: Analyzing trace with hash -422873945, now seen corresponding path program 74 times
[2022-01-31 18:13:30,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:13:30,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572856089]
[2022-01-31 18:13:30,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:13:30,077 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:13:30,077 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:13:30,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:13:30,085 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:13:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:13:31,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:13:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:13:31,986 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 18:13:31,986 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:13:31,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572856089]
[2022-01-31 18:13:31,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1572856089] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:13:31,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:13:31,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78
[2022-01-31 18:13:31,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033541537]
[2022-01-31 18:13:31,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:13:31,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states
[2022-01-31 18:13:31,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:13:31,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants.
[2022-01-31 18:13:31,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006
[2022-01-31 18:13:31,989 INFO L87 Difference]: Start difference. First operand 166 states and 168 transitions. Second operand has 78 states, 78 states have (on average 1.1025641025641026) internal successors, (86), 77 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 18:13:40,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:13:40,723 INFO L93 Difference]: Finished difference Result 479 states and 559 transitions.
[2022-01-31 18:13:40,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states.
[2022-01-31 18:13:40,724 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.1025641025641026) internal successors, (86), 77 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 162
[2022-01-31 18:13:40,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:13:40,725 INFO L225 Difference]: With dead ends: 479
[2022-01-31 18:13:40,725 INFO L226 Difference]: Without dead ends: 393
[2022-01-31 18:13:40,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2848 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=8778, Invalid=14478, Unknown=0, NotChecked=0, Total=23256
[2022-01-31 18:13:40,726 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 343 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 1139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1139 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-01-31 18:13:40,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 48 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1139 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-01-31 18:13:40,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states.
[2022-01-31 18:13:40,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 168.
[2022-01-31 18:13:40,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 162 states have (on average 1.0185185185185186) internal successors, (165), 162 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 18:13:40,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 170 transitions.
[2022-01-31 18:13:40,811 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 170 transitions. Word has length 162
[2022-01-31 18:13:40,812 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:13:40,812 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 170 transitions.
[2022-01-31 18:13:40,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.1025641025641026) internal successors, (86), 77 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 18:13:40,812 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 170 transitions.
[2022-01-31 18:13:40,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165
[2022-01-31 18:13:40,813 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:13:40,813 INFO L514 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:13:40,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76
[2022-01-31 18:13:40,813 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:13:40,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:13:40,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1959137030, now seen corresponding path program 75 times
[2022-01-31 18:13:40,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:13:40,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792404361]
[2022-01-31 18:13:40,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:13:40,815 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:13:40,815 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:13:40,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:13:40,823 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:13:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:13:42,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:13:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:13:42,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:13:42,828 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:13:42,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792404361]
[2022-01-31 18:13:42,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [792404361] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:13:42,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:13:42,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79
[2022-01-31 18:13:42,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419013277]
[2022-01-31 18:13:42,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:13:42,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states
[2022-01-31 18:13:42,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:13:42,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants.
[2022-01-31 18:13:42,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162
[2022-01-31 18:13:42,830 INFO L87 Difference]: Start difference. First operand 168 states and 170 transitions. Second operand has 79 states, 79 states have (on average 1.1012658227848102) internal successors, (87), 78 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 18:13:51,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:13:51,949 INFO L93 Difference]: Finished difference Result 485 states and 566 transitions.
[2022-01-31 18:13:51,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states.
[2022-01-31 18:13:51,950 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.1012658227848102) internal successors, (87), 78 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 164
[2022-01-31 18:13:51,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:13:51,952 INFO L225 Difference]: With dead ends: 485
[2022-01-31 18:13:51,952 INFO L226 Difference]: Without dead ends: 398
[2022-01-31 18:13:51,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2924 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870
[2022-01-31 18:13:51,953 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 326 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 1089 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1089 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-01-31 18:13:51,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 48 Invalid, 1957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1089 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-01-31 18:13:51,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states.
[2022-01-31 18:13:52,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 170.
[2022-01-31 18:13:52,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 164 states have (on average 1.0182926829268293) internal successors, (167), 164 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 18:13:52,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 172 transitions.
[2022-01-31 18:13:52,038 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 172 transitions. Word has length 164
[2022-01-31 18:13:52,038 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:13:52,038 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 172 transitions.
[2022-01-31 18:13:52,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.1012658227848102) internal successors, (87), 78 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 18:13:52,038 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 172 transitions.
[2022-01-31 18:13:52,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167
[2022-01-31 18:13:52,039 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:13:52,039 INFO L514 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:13:52,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77
[2022-01-31 18:13:52,039 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:13:52,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:13:52,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1170158471, now seen corresponding path program 76 times
[2022-01-31 18:13:52,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:13:52,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621808088]
[2022-01-31 18:13:52,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:13:52,041 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:13:52,041 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:13:52,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:13:52,049 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:13:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:13:54,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:13:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:13:54,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:13:54,106 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:13:54,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621808088]
[2022-01-31 18:13:54,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1621808088] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:13:54,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:13:54,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80
[2022-01-31 18:13:54,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567469308]
[2022-01-31 18:13:54,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:13:54,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states
[2022-01-31 18:13:54,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:13:54,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants.
[2022-01-31 18:13:54,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320
[2022-01-31 18:13:54,111 INFO L87 Difference]: Start difference. First operand 170 states and 172 transitions. Second operand has 80 states, 80 states have (on average 1.1) internal successors, (88), 79 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 18:14:03,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:14:03,241 INFO L93 Difference]: Finished difference Result 491 states and 573 transitions.
[2022-01-31 18:14:03,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states.
[2022-01-31 18:14:03,242 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.1) internal successors, (88), 79 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 166
[2022-01-31 18:14:03,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:14:03,243 INFO L225 Difference]: With dead ends: 491
[2022-01-31 18:14:03,243 INFO L226 Difference]: Without dead ends: 403
[2022-01-31 18:14:03,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3001 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=9243, Invalid=15249, Unknown=0, NotChecked=0, Total=24492
[2022-01-31 18:14:03,244 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 348 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 1157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1157 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-01-31 18:14:03,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 63 Invalid, 1981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1157 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-01-31 18:14:03,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states.
[2022-01-31 18:14:03,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 172.
[2022-01-31 18:14:03,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 166 states have (on average 1.0180722891566265) internal successors, (169), 166 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 18:14:03,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 174 transitions.
[2022-01-31 18:14:03,333 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 174 transitions. Word has length 166
[2022-01-31 18:14:03,333 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:14:03,333 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 174 transitions.
[2022-01-31 18:14:03,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.1) internal successors, (88), 79 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 18:14:03,333 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 174 transitions.
[2022-01-31 18:14:03,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169
[2022-01-31 18:14:03,334 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:14:03,334 INFO L514 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:14:03,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78
[2022-01-31 18:14:03,334 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:14:03,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:14:03,335 INFO L85 PathProgramCache]: Analyzing trace with hash -851815898, now seen corresponding path program 77 times
[2022-01-31 18:14:03,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:14:03,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360358841]
[2022-01-31 18:14:03,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:14:03,336 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:14:03,336 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:14:03,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:14:03,344 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:14:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:14:05,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:14:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:14:05,384 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 18:14:05,384 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:14:05,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360358841]
[2022-01-31 18:14:05,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [360358841] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:14:05,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:14:05,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81
[2022-01-31 18:14:05,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713387467]
[2022-01-31 18:14:05,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:14:05,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states
[2022-01-31 18:14:05,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:14:05,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants.
[2022-01-31 18:14:05,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480
[2022-01-31 18:14:05,386 INFO L87 Difference]: Start difference. First operand 172 states and 174 transitions. Second operand has 81 states, 81 states have (on average 1.0987654320987654) internal successors, (89), 80 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 18:14:14,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:14:14,603 INFO L93 Difference]: Finished difference Result 497 states and 580 transitions.
[2022-01-31 18:14:14,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states.
[2022-01-31 18:14:14,604 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.0987654320987654) internal successors, (89), 80 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 168
[2022-01-31 18:14:14,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:14:14,605 INFO L225 Difference]: With dead ends: 497
[2022-01-31 18:14:14,605 INFO L226 Difference]: Without dead ends: 408
[2022-01-31 18:14:14,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3079 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=9480, Invalid=15642, Unknown=0, NotChecked=0, Total=25122
[2022-01-31 18:14:14,607 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 449 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 1462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 2184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1462 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2022-01-31 18:14:14,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 28 Invalid, 2184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1462 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2022-01-31 18:14:14,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states.
[2022-01-31 18:14:14,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 174.
[2022-01-31 18:14:14,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 168 states have (on average 1.0178571428571428) internal successors, (171), 168 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 18:14:14,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 176 transitions.
[2022-01-31 18:14:14,703 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 176 transitions. Word has length 168
[2022-01-31 18:14:14,703 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:14:14,703 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 176 transitions.
[2022-01-31 18:14:14,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 1.0987654320987654) internal successors, (89), 80 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 18:14:14,703 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 176 transitions.
[2022-01-31 18:14:14,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171
[2022-01-31 18:14:14,704 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:14:14,704 INFO L514 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:14:14,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79
[2022-01-31 18:14:14,704 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:14:14,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:14:14,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1498544743, now seen corresponding path program 78 times
[2022-01-31 18:14:14,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:14:14,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489796273]
[2022-01-31 18:14:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:14:14,706 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:14:14,706 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:14:14,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:14:14,714 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:14:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:14:16,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:14:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:14:16,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:14:16,815 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:14:16,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489796273]
[2022-01-31 18:14:16,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [489796273] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:14:16,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:14:16,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82
[2022-01-31 18:14:16,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953596888]
[2022-01-31 18:14:16,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:14:16,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states
[2022-01-31 18:14:16,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:14:16,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants.
[2022-01-31 18:14:16,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642
[2022-01-31 18:14:16,818 INFO L87 Difference]: Start difference. First operand 174 states and 176 transitions. Second operand has 82 states, 82 states have (on average 1.0975609756097562) internal successors, (90), 81 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 18:14:26,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:14:26,306 INFO L93 Difference]: Finished difference Result 503 states and 587 transitions.
[2022-01-31 18:14:26,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states.
[2022-01-31 18:14:26,307 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.0975609756097562) internal successors, (90), 81 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 170
[2022-01-31 18:14:26,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:14:26,308 INFO L225 Difference]: With dead ends: 503
[2022-01-31 18:14:26,308 INFO L226 Difference]: Without dead ends: 413
[2022-01-31 18:14:26,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3158 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=9720, Invalid=16040, Unknown=0, NotChecked=0, Total=25760
[2022-01-31 18:14:26,310 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 378 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 1251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 2047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1251 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2022-01-31 18:14:26,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 58 Invalid, 2047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1251 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2022-01-31 18:14:26,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states.
[2022-01-31 18:14:26,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 176.
[2022-01-31 18:14:26,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 170 states have (on average 1.0176470588235293) internal successors, (173), 170 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 18:14:26,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 178 transitions.
[2022-01-31 18:14:26,408 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 178 transitions. Word has length 170
[2022-01-31 18:14:26,408 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:14:26,409 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 178 transitions.
[2022-01-31 18:14:26,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.0975609756097562) internal successors, (90), 81 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 18:14:26,409 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 178 transitions.
[2022-01-31 18:14:26,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173
[2022-01-31 18:14:26,409 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:14:26,409 INFO L514 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:14:26,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80
[2022-01-31 18:14:26,410 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:14:26,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:14:26,410 INFO L85 PathProgramCache]: Analyzing trace with hash 611159366, now seen corresponding path program 79 times
[2022-01-31 18:14:26,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:14:26,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409412169]
[2022-01-31 18:14:26,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:14:26,411 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:14:26,411 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:14:26,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:14:26,418 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:14:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:14:28,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:14:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:14:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:14:28,563 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:14:28,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409412169]
[2022-01-31 18:14:28,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1409412169] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:14:28,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:14:28,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83
[2022-01-31 18:14:28,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821611595]
[2022-01-31 18:14:28,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:14:28,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states
[2022-01-31 18:14:28,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:14:28,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants.
[2022-01-31 18:14:28,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806
[2022-01-31 18:14:28,565 INFO L87 Difference]: Start difference. First operand 176 states and 178 transitions. Second operand has 83 states, 83 states have (on average 1.0963855421686748) internal successors, (91), 82 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 18:14:38,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:14:38,237 INFO L93 Difference]: Finished difference Result 509 states and 594 transitions.
[2022-01-31 18:14:38,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states.
[2022-01-31 18:14:38,237 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.0963855421686748) internal successors, (91), 82 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 172
[2022-01-31 18:14:38,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:14:38,239 INFO L225 Difference]: With dead ends: 509
[2022-01-31 18:14:38,239 INFO L226 Difference]: Without dead ends: 418
[2022-01-31 18:14:38,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3238 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406
[2022-01-31 18:14:38,240 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 383 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 1268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1268 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2022-01-31 18:14:38,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 43 Invalid, 2107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1268 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2022-01-31 18:14:38,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states.
[2022-01-31 18:14:38,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 178.
[2022-01-31 18:14:38,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 172 states have (on average 1.0174418604651163) internal successors, (175), 172 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 18:14:38,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 180 transitions.
[2022-01-31 18:14:38,329 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 180 transitions. Word has length 172
[2022-01-31 18:14:38,329 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:14:38,329 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 180 transitions.
[2022-01-31 18:14:38,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.0963855421686748) internal successors, (91), 82 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 18:14:38,330 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 180 transitions.
[2022-01-31 18:14:38,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175
[2022-01-31 18:14:38,330 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:14:38,330 INFO L514 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:14:38,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81
[2022-01-31 18:14:38,331 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:14:38,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:14:38,331 INFO L85 PathProgramCache]: Analyzing trace with hash 2051131719, now seen corresponding path program 80 times
[2022-01-31 18:14:38,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:14:38,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987073580]
[2022-01-31 18:14:38,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:14:38,332 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:14:38,332 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:14:38,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:14:38,340 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:14:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:14:40,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:14:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:14:40,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:14:40,608 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:14:40,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987073580]
[2022-01-31 18:14:40,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [987073580] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:14:40,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:14:40,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84
[2022-01-31 18:14:40,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215458006]
[2022-01-31 18:14:40,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:14:40,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states
[2022-01-31 18:14:40,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:14:40,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants.
[2022-01-31 18:14:40,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972
[2022-01-31 18:14:40,610 INFO L87 Difference]: Start difference. First operand 178 states and 180 transitions. Second operand has 84 states, 84 states have (on average 1.0952380952380953) internal successors, (92), 83 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 18:14:51,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:14:51,258 INFO L93 Difference]: Finished difference Result 515 states and 601 transitions.
[2022-01-31 18:14:51,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states.
[2022-01-31 18:14:51,259 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.0952380952380953) internal successors, (92), 83 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 174
[2022-01-31 18:14:51,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:14:51,260 INFO L225 Difference]: With dead ends: 515
[2022-01-31 18:14:51,260 INFO L226 Difference]: Without dead ends: 423
[2022-01-31 18:14:51,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3319 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=10209, Invalid=16851, Unknown=0, NotChecked=0, Total=27060
[2022-01-31 18:14:51,262 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 447 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 1462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1462 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-01-31 18:14:51,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 43 Invalid, 2301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1462 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-01-31 18:14:51,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states.
[2022-01-31 18:14:51,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 180.
[2022-01-31 18:14:51,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 174 states have (on average 1.0172413793103448) internal successors, (177), 174 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 18:14:51,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 182 transitions.
[2022-01-31 18:14:51,360 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 182 transitions. Word has length 174
[2022-01-31 18:14:51,360 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:14:51,360 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 182 transitions.
[2022-01-31 18:14:51,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.0952380952380953) internal successors, (92), 83 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 18:14:51,360 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 182 transitions.
[2022-01-31 18:14:51,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177
[2022-01-31 18:14:51,361 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:14:51,361 INFO L514 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:14:51,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82
[2022-01-31 18:14:51,361 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:14:51,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:14:51,361 INFO L85 PathProgramCache]: Analyzing trace with hash 853655654, now seen corresponding path program 81 times
[2022-01-31 18:14:51,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:14:51,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644379872]
[2022-01-31 18:14:51,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:14:51,362 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:14:51,363 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:14:51,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:14:51,370 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:14:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:14:53,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:14:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:14:53,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:14:53,668 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:14:53,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644379872]
[2022-01-31 18:14:53,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [644379872] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:14:53,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:14:53,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85
[2022-01-31 18:14:53,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440139345]
[2022-01-31 18:14:53,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:14:53,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states
[2022-01-31 18:14:53,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:14:53,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants.
[2022-01-31 18:14:53,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140
[2022-01-31 18:14:53,670 INFO L87 Difference]: Start difference. First operand 180 states and 182 transitions. Second operand has 85 states, 85 states have (on average 1.0941176470588236) internal successors, (93), 84 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 18:15:04,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:15:04,803 INFO L93 Difference]: Finished difference Result 521 states and 608 transitions.
[2022-01-31 18:15:04,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states.
[2022-01-31 18:15:04,804 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.0941176470588236) internal successors, (93), 84 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 176
[2022-01-31 18:15:04,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:15:04,805 INFO L225 Difference]: With dead ends: 521
[2022-01-31 18:15:04,805 INFO L226 Difference]: Without dead ends: 428
[2022-01-31 18:15:04,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3401 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=10458, Invalid=17264, Unknown=0, NotChecked=0, Total=27722
[2022-01-31 18:15:04,807 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 412 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 1359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1359 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2022-01-31 18:15:04,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 48 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1359 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2022-01-31 18:15:04,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states.
[2022-01-31 18:15:04,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 182.
[2022-01-31 18:15:04,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 176 states have (on average 1.0170454545454546) internal successors, (179), 176 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 18:15:04,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 184 transitions.
[2022-01-31 18:15:04,905 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 184 transitions. Word has length 176
[2022-01-31 18:15:04,906 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:15:04,906 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 184 transitions.
[2022-01-31 18:15:04,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 1.0941176470588236) internal successors, (93), 84 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 18:15:04,906 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 184 transitions.
[2022-01-31 18:15:04,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179
[2022-01-31 18:15:04,907 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:15:04,907 INFO L514 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:15:04,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83
[2022-01-31 18:15:04,907 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:15:04,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:15:04,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1714642905, now seen corresponding path program 82 times
[2022-01-31 18:15:04,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:15:04,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647019403]
[2022-01-31 18:15:04,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:15:04,909 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:15:04,909 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:15:04,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:15:04,919 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:15:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:15:07,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:15:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:15:07,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:15:07,264 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:15:07,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647019403]
[2022-01-31 18:15:07,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1647019403] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:15:07,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:15:07,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86
[2022-01-31 18:15:07,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163371568]
[2022-01-31 18:15:07,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:15:07,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states
[2022-01-31 18:15:07,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:15:07,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants.
[2022-01-31 18:15:07,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310
[2022-01-31 18:15:07,267 INFO L87 Difference]: Start difference. First operand 182 states and 184 transitions. Second operand has 86 states, 86 states have (on average 1.0930232558139534) internal successors, (94), 85 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 18:15:18,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:15:18,734 INFO L93 Difference]: Finished difference Result 527 states and 615 transitions.
[2022-01-31 18:15:18,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states.
[2022-01-31 18:15:18,735 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.0930232558139534) internal successors, (94), 85 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 178
[2022-01-31 18:15:18,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:15:18,736 INFO L225 Difference]: With dead ends: 527
[2022-01-31 18:15:18,736 INFO L226 Difference]: Without dead ends: 433
[2022-01-31 18:15:18,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3484 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=10710, Invalid=17682, Unknown=0, NotChecked=0, Total=28392
[2022-01-31 18:15:18,738 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 386 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 1285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 2054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1285 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2022-01-31 18:15:18,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 33 Invalid, 2054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1285 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2022-01-31 18:15:18,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states.
[2022-01-31 18:15:18,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 184.
[2022-01-31 18:15:18,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 178 states have (on average 1.0168539325842696) internal successors, (181), 178 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 18:15:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 186 transitions.
[2022-01-31 18:15:18,850 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 186 transitions. Word has length 178
[2022-01-31 18:15:18,850 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:15:18,850 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 186 transitions.
[2022-01-31 18:15:18,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.0930232558139534) internal successors, (94), 85 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 18:15:18,851 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 186 transitions.
[2022-01-31 18:15:18,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181
[2022-01-31 18:15:18,851 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:15:18,852 INFO L514 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:15:18,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84
[2022-01-31 18:15:18,852 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:15:18,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:15:18,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1754852230, now seen corresponding path program 83 times
[2022-01-31 18:15:18,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:15:18,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465143891]
[2022-01-31 18:15:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:15:18,854 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:15:18,854 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:15:18,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:15:18,862 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:15:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:15:21,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:15:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:15:21,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:15:21,269 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:15:21,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465143891]
[2022-01-31 18:15:21,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1465143891] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:15:21,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:15:21,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87
[2022-01-31 18:15:21,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707361169]
[2022-01-31 18:15:21,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:15:21,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states
[2022-01-31 18:15:21,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:15:21,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants.
[2022-01-31 18:15:21,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482
[2022-01-31 18:15:21,272 INFO L87 Difference]: Start difference. First operand 184 states and 186 transitions. Second operand has 87 states, 87 states have (on average 1.0919540229885059) internal successors, (95), 86 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 18:15:33,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:15:33,336 INFO L93 Difference]: Finished difference Result 533 states and 622 transitions.
[2022-01-31 18:15:33,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states.
[2022-01-31 18:15:33,336 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 1.0919540229885059) internal successors, (95), 86 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 180
[2022-01-31 18:15:33,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:15:33,338 INFO L225 Difference]: With dead ends: 533
[2022-01-31 18:15:33,338 INFO L226 Difference]: Without dead ends: 438
[2022-01-31 18:15:33,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3568 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070
[2022-01-31 18:15:33,340 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 420 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 1393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1393 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-01-31 18:15:33,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 48 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1393 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-01-31 18:15:33,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states.
[2022-01-31 18:15:33,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 186.
[2022-01-31 18:15:33,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 180 states have (on average 1.0166666666666666) internal successors, (183), 180 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 18:15:33,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 188 transitions.
[2022-01-31 18:15:33,460 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 188 transitions. Word has length 180
[2022-01-31 18:15:33,460 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:15:33,460 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 188 transitions.
[2022-01-31 18:15:33,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 1.0919540229885059) internal successors, (95), 86 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 18:15:33,460 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 188 transitions.
[2022-01-31 18:15:33,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183
[2022-01-31 18:15:33,461 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:15:33,461 INFO L514 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:15:33,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85
[2022-01-31 18:15:33,461 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:15:33,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:15:33,461 INFO L85 PathProgramCache]: Analyzing trace with hash 565214983, now seen corresponding path program 84 times
[2022-01-31 18:15:33,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:15:33,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574246485]
[2022-01-31 18:15:33,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:15:33,462 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:15:33,462 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:15:33,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:15:33,470 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:15:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:15:35,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:15:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:15:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:15:35,894 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:15:35,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574246485]
[2022-01-31 18:15:35,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [574246485] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:15:35,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:15:35,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88
[2022-01-31 18:15:35,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655597703]
[2022-01-31 18:15:35,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:15:35,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states
[2022-01-31 18:15:35,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:15:35,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants.
[2022-01-31 18:15:35,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656
[2022-01-31 18:15:35,897 INFO L87 Difference]: Start difference. First operand 186 states and 188 transitions. Second operand has 88 states, 88 states have (on average 1.0909090909090908) internal successors, (96), 87 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 18:15:48,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:15:48,467 INFO L93 Difference]: Finished difference Result 539 states and 629 transitions.
[2022-01-31 18:15:48,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states.
[2022-01-31 18:15:48,468 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.0909090909090908) internal successors, (96), 87 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 182
[2022-01-31 18:15:48,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:15:48,469 INFO L225 Difference]: With dead ends: 539
[2022-01-31 18:15:48,469 INFO L226 Difference]: Without dead ends: 443
[2022-01-31 18:15:48,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3653 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=11223, Invalid=18533, Unknown=0, NotChecked=0, Total=29756
[2022-01-31 18:15:48,471 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 360 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 1209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 2296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1209 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-01-31 18:15:48,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 73 Invalid, 2296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1209 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-01-31 18:15:48,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states.
[2022-01-31 18:15:48,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 188.
[2022-01-31 18:15:48,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 182 states have (on average 1.0164835164835164) internal successors, (185), 182 states have internal predecessors, (185), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 18:15:48,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 190 transitions.
[2022-01-31 18:15:48,596 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 190 transitions. Word has length 182
[2022-01-31 18:15:48,596 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:15:48,596 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 190 transitions.
[2022-01-31 18:15:48,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.0909090909090908) internal successors, (96), 87 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 18:15:48,597 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 190 transitions.
[2022-01-31 18:15:48,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185
[2022-01-31 18:15:48,597 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:15:48,597 INFO L514 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:15:48,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86
[2022-01-31 18:15:48,597 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:15:48,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:15:48,598 INFO L85 PathProgramCache]: Analyzing trace with hash 219483814, now seen corresponding path program 85 times
[2022-01-31 18:15:48,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:15:48,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691584064]
[2022-01-31 18:15:48,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:15:48,599 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:15:48,599 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:15:48,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:15:48,606 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:15:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:15:51,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:15:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:15:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:15:51,138 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:15:51,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691584064]
[2022-01-31 18:15:51,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1691584064] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:15:51,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:15:51,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89
[2022-01-31 18:15:51,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580858612]
[2022-01-31 18:15:51,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:15:51,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states
[2022-01-31 18:15:51,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:15:51,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants.
[2022-01-31 18:15:51,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832
[2022-01-31 18:15:51,141 INFO L87 Difference]: Start difference. First operand 188 states and 190 transitions. Second operand has 89 states, 89 states have (on average 1.0898876404494382) internal successors, (97), 88 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 18:16:03,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:16:03,689 INFO L93 Difference]: Finished difference Result 545 states and 636 transitions.
[2022-01-31 18:16:03,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states.
[2022-01-31 18:16:03,689 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.0898876404494382) internal successors, (97), 88 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 184
[2022-01-31 18:16:03,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:16:03,691 INFO L225 Difference]: With dead ends: 545
[2022-01-31 18:16:03,691 INFO L226 Difference]: Without dead ends: 448
[2022-01-31 18:16:03,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3739 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=11484, Invalid=18966, Unknown=0, NotChecked=0, Total=30450
[2022-01-31 18:16:03,692 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 381 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 1274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 2167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1274 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2022-01-31 18:16:03,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 58 Invalid, 2167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1274 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2022-01-31 18:16:03,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states.
[2022-01-31 18:16:03,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 190.
[2022-01-31 18:16:03,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 184 states have (on average 1.016304347826087) internal successors, (187), 184 states have internal predecessors, (187), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 18:16:03,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 192 transitions.
[2022-01-31 18:16:03,800 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 192 transitions. Word has length 184
[2022-01-31 18:16:03,800 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:16:03,800 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 192 transitions.
[2022-01-31 18:16:03,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.0898876404494382) internal successors, (97), 88 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 18:16:03,800 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 192 transitions.
[2022-01-31 18:16:03,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187
[2022-01-31 18:16:03,801 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:16:03,801 INFO L514 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:16:03,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87
[2022-01-31 18:16:03,801 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:16:03,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:16:03,801 INFO L85 PathProgramCache]: Analyzing trace with hash -735353369, now seen corresponding path program 86 times
[2022-01-31 18:16:03,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:16:03,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817225155]
[2022-01-31 18:16:03,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:16:03,802 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:16:03,802 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:16:03,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:16:03,810 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:16:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:16:06,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:16:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:16:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:16:06,305 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:16:06,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817225155]
[2022-01-31 18:16:06,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [817225155] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:16:06,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:16:06,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90
[2022-01-31 18:16:06,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248405626]
[2022-01-31 18:16:06,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:16:06,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states
[2022-01-31 18:16:06,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:16:06,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants.
[2022-01-31 18:16:06,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010
[2022-01-31 18:16:06,308 INFO L87 Difference]: Start difference. First operand 190 states and 192 transitions. Second operand has 90 states, 90 states have (on average 1.0888888888888888) internal successors, (98), 89 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 18:16:18,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:16:18,608 INFO L93 Difference]: Finished difference Result 551 states and 643 transitions.
[2022-01-31 18:16:18,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states.
[2022-01-31 18:16:18,608 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.0888888888888888) internal successors, (98), 89 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 186
[2022-01-31 18:16:18,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:16:18,610 INFO L225 Difference]: With dead ends: 551
[2022-01-31 18:16:18,610 INFO L226 Difference]: Without dead ends: 453
[2022-01-31 18:16:18,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3826 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=11748, Invalid=19404, Unknown=0, NotChecked=0, Total=31152
[2022-01-31 18:16:18,611 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 407 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 1354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 2184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1354 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2022-01-31 18:16:18,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 53 Invalid, 2184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1354 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2022-01-31 18:16:18,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states.
[2022-01-31 18:16:18,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 192.
[2022-01-31 18:16:18,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 186 states have (on average 1.0161290322580645) internal successors, (189), 186 states have internal predecessors, (189), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 18:16:18,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 194 transitions.
[2022-01-31 18:16:18,716 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 194 transitions. Word has length 186
[2022-01-31 18:16:18,716 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:16:18,716 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 194 transitions.
[2022-01-31 18:16:18,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.0888888888888888) internal successors, (98), 89 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 18:16:18,716 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 194 transitions.
[2022-01-31 18:16:18,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189
[2022-01-31 18:16:18,717 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:16:18,717 INFO L514 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:16:18,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88
[2022-01-31 18:16:18,717 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:16:18,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:16:18,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1599613382, now seen corresponding path program 87 times
[2022-01-31 18:16:18,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:16:18,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972245109]
[2022-01-31 18:16:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:16:18,719 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:16:18,719 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:16:18,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:16:18,727 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:16:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:16:21,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:16:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:16:21,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:16:21,252 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:16:21,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972245109]
[2022-01-31 18:16:21,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1972245109] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:16:21,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:16:21,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91
[2022-01-31 18:16:21,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946959151]
[2022-01-31 18:16:21,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:16:21,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states
[2022-01-31 18:16:21,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:16:21,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants.
[2022-01-31 18:16:21,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190
[2022-01-31 18:16:21,255 INFO L87 Difference]: Start difference. First operand 192 states and 194 transitions. Second operand has 91 states, 91 states have (on average 1.0879120879120878) internal successors, (99), 90 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 18:16:34,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:16:34,205 INFO L93 Difference]: Finished difference Result 557 states and 650 transitions.
[2022-01-31 18:16:34,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states.
[2022-01-31 18:16:34,205 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 1.0879120879120878) internal successors, (99), 90 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 188
[2022-01-31 18:16:34,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:16:34,207 INFO L225 Difference]: With dead ends: 557
[2022-01-31 18:16:34,207 INFO L226 Difference]: Without dead ends: 458
[2022-01-31 18:16:34,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3914 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862
[2022-01-31 18:16:34,208 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 434 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 1437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1437 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-01-31 18:16:34,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 48 Invalid, 2332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1437 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-01-31 18:16:34,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states.
[2022-01-31 18:16:34,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 194.
[2022-01-31 18:16:34,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 188 states have (on average 1.0159574468085106) internal successors, (191), 188 states have internal predecessors, (191), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 18:16:34,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 196 transitions.
[2022-01-31 18:16:34,372 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 196 transitions. Word has length 188
[2022-01-31 18:16:34,372 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:16:34,372 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 196 transitions.
[2022-01-31 18:16:34,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 1.0879120879120878) internal successors, (99), 90 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 18:16:34,372 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 196 transitions.
[2022-01-31 18:16:34,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191
[2022-01-31 18:16:34,373 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:16:34,373 INFO L514 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:16:34,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89
[2022-01-31 18:16:34,373 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:16:34,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:16:34,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1409592121, now seen corresponding path program 88 times
[2022-01-31 18:16:34,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:16:34,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612999701]
[2022-01-31 18:16:34,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:16:34,375 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:16:34,375 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:16:34,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:16:34,385 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:16:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:16:37,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:16:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:16:37,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:16:37,010 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:16:37,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612999701]
[2022-01-31 18:16:37,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1612999701] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:16:37,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:16:37,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92
[2022-01-31 18:16:37,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123310891]
[2022-01-31 18:16:37,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:16:37,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states
[2022-01-31 18:16:37,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:16:37,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants.
[2022-01-31 18:16:37,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372
[2022-01-31 18:16:37,013 INFO L87 Difference]: Start difference. First operand 194 states and 196 transitions. Second operand has 92 states, 92 states have (on average 1.0869565217391304) internal successors, (100), 91 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 18:16:50,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:16:50,513 INFO L93 Difference]: Finished difference Result 563 states and 657 transitions.
[2022-01-31 18:16:50,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states.
[2022-01-31 18:16:50,513 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.0869565217391304) internal successors, (100), 91 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 190
[2022-01-31 18:16:50,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:16:50,515 INFO L225 Difference]: With dead ends: 563
[2022-01-31 18:16:50,515 INFO L226 Difference]: Without dead ends: 463
[2022-01-31 18:16:50,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4003 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=12285, Invalid=20295, Unknown=0, NotChecked=0, Total=32580
[2022-01-31 18:16:50,517 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 503 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 1647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1647 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-01-31 18:16:50,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 33 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1647 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-01-31 18:16:50,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states.
[2022-01-31 18:16:50,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 196.
[2022-01-31 18:16:50,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 190 states have (on average 1.0157894736842106) internal successors, (193), 190 states have internal predecessors, (193), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 18:16:50,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 198 transitions.
[2022-01-31 18:16:50,624 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 198 transitions. Word has length 190
[2022-01-31 18:16:50,624 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:16:50,624 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 198 transitions.
[2022-01-31 18:16:50,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.0869565217391304) internal successors, (100), 91 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 18:16:50,624 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 198 transitions.
[2022-01-31 18:16:50,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193
[2022-01-31 18:16:50,625 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:16:50,625 INFO L514 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:16:50,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90
[2022-01-31 18:16:50,625 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:16:50,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:16:50,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1243333402, now seen corresponding path program 89 times
[2022-01-31 18:16:50,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:16:50,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930942098]
[2022-01-31 18:16:50,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:16:50,627 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:16:50,627 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:16:50,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:16:50,637 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:16:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:16:53,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:16:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:16:53,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:16:53,288 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:16:53,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930942098]
[2022-01-31 18:16:53,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1930942098] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:16:53,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:16:53,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93
[2022-01-31 18:16:53,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295380622]
[2022-01-31 18:16:53,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:16:53,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states
[2022-01-31 18:16:53,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:16:53,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants.
[2022-01-31 18:16:53,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556
[2022-01-31 18:16:53,291 INFO L87 Difference]: Start difference. First operand 196 states and 198 transitions. Second operand has 93 states, 93 states have (on average 1.086021505376344) internal successors, (101), 92 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 18:17:07,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:17:07,585 INFO L93 Difference]: Finished difference Result 569 states and 664 transitions.
[2022-01-31 18:17:07,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states.
[2022-01-31 18:17:07,586 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 1.086021505376344) internal successors, (101), 92 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 192
[2022-01-31 18:17:07,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:17:07,587 INFO L225 Difference]: With dead ends: 569
[2022-01-31 18:17:07,587 INFO L226 Difference]: Without dead ends: 468
[2022-01-31 18:17:07,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4093 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=12558, Invalid=20748, Unknown=0, NotChecked=0, Total=33306
[2022-01-31 18:17:07,589 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 427 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 1421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 2331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1421 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-01-31 18:17:07,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 53 Invalid, 2331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1421 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-01-31 18:17:07,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states.
[2022-01-31 18:17:07,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 198.
[2022-01-31 18:17:07,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 192 states have (on average 1.015625) internal successors, (195), 192 states have internal predecessors, (195), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 18:17:07,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 200 transitions.
[2022-01-31 18:17:07,713 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 200 transitions. Word has length 192
[2022-01-31 18:17:07,713 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:17:07,713 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 200 transitions.
[2022-01-31 18:17:07,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 1.086021505376344) internal successors, (101), 92 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 18:17:07,713 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 200 transitions.
[2022-01-31 18:17:07,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195
[2022-01-31 18:17:07,714 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:17:07,714 INFO L514 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:17:07,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91
[2022-01-31 18:17:07,714 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:17:07,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:17:07,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1134670937, now seen corresponding path program 90 times
[2022-01-31 18:17:07,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:17:07,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666494783]
[2022-01-31 18:17:07,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:17:07,715 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:17:07,715 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:17:07,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:17:07,723 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:17:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:17:10,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:17:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:17:10,384 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 18:17:10,384 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:17:10,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666494783]
[2022-01-31 18:17:10,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1666494783] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:17:10,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:17:10,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94
[2022-01-31 18:17:10,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558192765]
[2022-01-31 18:17:10,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:17:10,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states
[2022-01-31 18:17:10,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:17:10,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants.
[2022-01-31 18:17:10,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742
[2022-01-31 18:17:10,387 INFO L87 Difference]: Start difference. First operand 198 states and 200 transitions. Second operand has 94 states, 94 states have (on average 1.0851063829787233) internal successors, (102), 93 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 18:17:25,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:17:25,079 INFO L93 Difference]: Finished difference Result 575 states and 671 transitions.
[2022-01-31 18:17:25,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states.
[2022-01-31 18:17:25,079 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.0851063829787233) internal successors, (102), 93 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 194
[2022-01-31 18:17:25,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:17:25,081 INFO L225 Difference]: With dead ends: 575
[2022-01-31 18:17:25,081 INFO L226 Difference]: Without dead ends: 473
[2022-01-31 18:17:25,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4184 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=12834, Invalid=21206, Unknown=0, NotChecked=0, Total=34040
[2022-01-31 18:17:25,082 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 452 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 1500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 2410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1500 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-01-31 18:17:25,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 38 Invalid, 2410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1500 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-01-31 18:17:25,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states.
[2022-01-31 18:17:25,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 200.
[2022-01-31 18:17:25,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 194 states have (on average 1.0154639175257731) internal successors, (197), 194 states have internal predecessors, (197), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 18:17:25,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 202 transitions.
[2022-01-31 18:17:25,203 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 202 transitions. Word has length 194
[2022-01-31 18:17:25,203 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:17:25,203 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 202 transitions.
[2022-01-31 18:17:25,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 1.0851063829787233) internal successors, (102), 93 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 18:17:25,204 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 202 transitions.
[2022-01-31 18:17:25,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197
[2022-01-31 18:17:25,204 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:17:25,204 INFO L514 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:17:25,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92
[2022-01-31 18:17:25,204 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:17:25,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:17:25,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1631893498, now seen corresponding path program 91 times
[2022-01-31 18:17:25,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:17:25,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881716309]
[2022-01-31 18:17:25,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:17:25,205 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:17:25,206 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:17:25,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:17:25,216 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:17:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:17:27,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:17:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:17:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:17:27,990 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:17:27,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881716309]
[2022-01-31 18:17:27,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [881716309] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:17:27,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:17:27,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95
[2022-01-31 18:17:27,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366094580]
[2022-01-31 18:17:27,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:17:27,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states
[2022-01-31 18:17:27,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:17:27,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants.
[2022-01-31 18:17:27,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930
[2022-01-31 18:17:27,993 INFO L87 Difference]: Start difference. First operand 200 states and 202 transitions. Second operand has 95 states, 95 states have (on average 1.0842105263157895) internal successors, (103), 94 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 18:17:43,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:17:43,250 INFO L93 Difference]: Finished difference Result 581 states and 678 transitions.
[2022-01-31 18:17:43,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states.
[2022-01-31 18:17:43,251 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.0842105263157895) internal successors, (103), 94 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 196
[2022-01-31 18:17:43,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:17:43,252 INFO L225 Difference]: With dead ends: 581
[2022-01-31 18:17:43,252 INFO L226 Difference]: Without dead ends: 478
[2022-01-31 18:17:43,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4276 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782
[2022-01-31 18:17:43,254 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 572 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 1862 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 2660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1862 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2022-01-31 18:17:43,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 28 Invalid, 2660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1862 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2022-01-31 18:17:43,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states.
[2022-01-31 18:17:43,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 202.
[2022-01-31 18:17:43,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 196 states have (on average 1.0153061224489797) internal successors, (199), 196 states have internal predecessors, (199), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 18:17:43,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 204 transitions.
[2022-01-31 18:17:43,369 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 204 transitions. Word has length 196
[2022-01-31 18:17:43,369 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:17:43,369 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 204 transitions.
[2022-01-31 18:17:43,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 1.0842105263157895) internal successors, (103), 94 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 18:17:43,369 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 204 transitions.
[2022-01-31 18:17:43,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199
[2022-01-31 18:17:43,370 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:17:43,370 INFO L514 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:17:43,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93
[2022-01-31 18:17:43,370 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:17:43,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:17:43,370 INFO L85 PathProgramCache]: Analyzing trace with hash 286411399, now seen corresponding path program 92 times
[2022-01-31 18:17:43,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:17:43,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014659194]
[2022-01-31 18:17:43,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:17:43,371 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:17:43,372 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:17:43,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:17:43,380 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:17:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:17:46,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:17:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:17:46,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:17:46,223 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:17:46,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014659194]
[2022-01-31 18:17:46,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1014659194] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:17:46,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:17:46,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96
[2022-01-31 18:17:46,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443871619]
[2022-01-31 18:17:46,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:17:46,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states
[2022-01-31 18:17:46,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:17:46,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants.
[2022-01-31 18:17:46,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120
[2022-01-31 18:17:46,225 INFO L87 Difference]: Start difference. First operand 202 states and 204 transitions. Second operand has 96 states, 96 states have (on average 1.0833333333333333) internal successors, (104), 95 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 18:18:01,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:18:01,830 INFO L93 Difference]: Finished difference Result 587 states and 685 transitions.
[2022-01-31 18:18:01,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states.
[2022-01-31 18:18:01,831 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0833333333333333) internal successors, (104), 95 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 198
[2022-01-31 18:18:01,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:18:01,833 INFO L225 Difference]: With dead ends: 587
[2022-01-31 18:18:01,833 INFO L226 Difference]: Without dead ends: 483
[2022-01-31 18:18:01,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4369 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=13395, Invalid=22137, Unknown=0, NotChecked=0, Total=35532
[2022-01-31 18:18:01,835 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 409 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 1372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1372 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-01-31 18:18:01,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 53 Invalid, 2393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1372 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-01-31 18:18:01,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states.
[2022-01-31 18:18:01,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 204.
[2022-01-31 18:18:01,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 198 states have (on average 1.0151515151515151) internal successors, (201), 198 states have internal predecessors, (201), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 18:18:01,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 206 transitions.
[2022-01-31 18:18:01,961 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 206 transitions. Word has length 198
[2022-01-31 18:18:01,962 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:18:01,962 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 206 transitions.
[2022-01-31 18:18:01,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.0833333333333333) internal successors, (104), 95 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 18:18:01,962 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 206 transitions.
[2022-01-31 18:18:01,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201
[2022-01-31 18:18:01,963 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:18:01,963 INFO L514 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:18:01,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94
[2022-01-31 18:18:01,963 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:18:01,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:18:01,963 INFO L85 PathProgramCache]: Analyzing trace with hash -10532058, now seen corresponding path program 93 times
[2022-01-31 18:18:01,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:18:01,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395362997]
[2022-01-31 18:18:01,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:18:01,964 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:18:01,965 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:18:01,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:18:01,975 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:18:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:18:04,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:18:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:18:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:18:04,893 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:18:04,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395362997]
[2022-01-31 18:18:04,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [395362997] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:18:04,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:18:04,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97
[2022-01-31 18:18:04,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445247771]
[2022-01-31 18:18:04,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:18:04,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states
[2022-01-31 18:18:04,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:18:04,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants.
[2022-01-31 18:18:04,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312
[2022-01-31 18:18:04,897 INFO L87 Difference]: Start difference. First operand 204 states and 206 transitions. Second operand has 97 states, 97 states have (on average 1.0824742268041236) internal successors, (105), 96 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 18:18:21,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:18:21,072 INFO L93 Difference]: Finished difference Result 593 states and 692 transitions.
[2022-01-31 18:18:21,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states.
[2022-01-31 18:18:21,074 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.0824742268041236) internal successors, (105), 96 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 200
[2022-01-31 18:18:21,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:18:21,083 INFO L225 Difference]: With dead ends: 593
[2022-01-31 18:18:21,083 INFO L226 Difference]: Without dead ends: 488
[2022-01-31 18:18:21,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4463 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=13680, Invalid=22610, Unknown=0, NotChecked=0, Total=36290
[2022-01-31 18:18:21,086 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 465 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 1543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 2507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1543 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-01-31 18:18:21,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 53 Invalid, 2507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1543 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-01-31 18:18:21,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states.
[2022-01-31 18:18:21,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 206.
[2022-01-31 18:18:21,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 200 states have (on average 1.015) internal successors, (203), 200 states have internal predecessors, (203), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 18:18:21,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 208 transitions.
[2022-01-31 18:18:21,268 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 208 transitions. Word has length 200
[2022-01-31 18:18:21,269 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:18:21,269 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 208 transitions.
[2022-01-31 18:18:21,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.0824742268041236) internal successors, (105), 96 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 18:18:21,269 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 208 transitions.
[2022-01-31 18:18:21,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203
[2022-01-31 18:18:21,270 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:18:21,270 INFO L514 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:18:21,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95
[2022-01-31 18:18:21,270 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:18:21,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:18:21,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1907011225, now seen corresponding path program 94 times
[2022-01-31 18:18:21,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:18:21,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462237079]
[2022-01-31 18:18:21,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:18:21,272 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:18:21,272 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:18:21,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:18:21,284 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:18:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:18:24,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:18:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:18:24,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:18:24,294 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:18:24,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462237079]
[2022-01-31 18:18:24,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [462237079] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:18:24,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:18:24,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98
[2022-01-31 18:18:24,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302053380]
[2022-01-31 18:18:24,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:18:24,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states
[2022-01-31 18:18:24,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:18:24,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants.
[2022-01-31 18:18:24,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506
[2022-01-31 18:18:24,296 INFO L87 Difference]: Start difference. First operand 206 states and 208 transitions. Second operand has 98 states, 98 states have (on average 1.0816326530612246) internal successors, (106), 97 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 18:18:40,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:18:40,178 INFO L93 Difference]: Finished difference Result 599 states and 699 transitions.
[2022-01-31 18:18:40,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states.
[2022-01-31 18:18:40,179 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.0816326530612246) internal successors, (106), 97 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 202
[2022-01-31 18:18:40,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:18:40,180 INFO L225 Difference]: With dead ends: 599
[2022-01-31 18:18:40,180 INFO L226 Difference]: Without dead ends: 493
[2022-01-31 18:18:40,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4558 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=13968, Invalid=23088, Unknown=0, NotChecked=0, Total=37056
[2022-01-31 18:18:40,182 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 453 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 1509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 2468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1509 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-01-31 18:18:40,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 53 Invalid, 2468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1509 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-01-31 18:18:40,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states.
[2022-01-31 18:18:40,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 208.
[2022-01-31 18:18:40,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 202 states have (on average 1.0148514851485149) internal successors, (205), 202 states have internal predecessors, (205), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 18:18:40,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 210 transitions.
[2022-01-31 18:18:40,307 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 210 transitions. Word has length 202
[2022-01-31 18:18:40,307 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:18:40,307 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 210 transitions.
[2022-01-31 18:18:40,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.0816326530612246) internal successors, (106), 97 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 18:18:40,307 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 210 transitions.
[2022-01-31 18:18:40,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205
[2022-01-31 18:18:40,308 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:18:40,308 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:18:40,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96
[2022-01-31 18:18:40,308 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:18:40,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:18:40,308 INFO L85 PathProgramCache]: Analyzing trace with hash 886195782, now seen corresponding path program 95 times
[2022-01-31 18:18:40,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:18:40,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746468619]
[2022-01-31 18:18:40,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:18:40,309 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:18:40,309 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:18:40,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:18:40,317 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:18:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:18:43,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:18:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:18:43,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:18:43,295 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:18:43,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746468619]
[2022-01-31 18:18:43,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [746468619] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:18:43,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:18:43,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99
[2022-01-31 18:18:43,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728654582]
[2022-01-31 18:18:43,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:18:43,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states
[2022-01-31 18:18:43,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:18:43,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants.
[2022-01-31 18:18:43,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702
[2022-01-31 18:18:43,297 INFO L87 Difference]: Start difference. First operand 208 states and 210 transitions. Second operand has 99 states, 99 states have (on average 1.0808080808080809) internal successors, (107), 98 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 18:18:59,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:18:59,632 INFO L93 Difference]: Finished difference Result 605 states and 706 transitions.
[2022-01-31 18:18:59,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states.
[2022-01-31 18:18:59,632 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 1.0808080808080809) internal successors, (107), 98 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 204
[2022-01-31 18:18:59,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:18:59,633 INFO L225 Difference]: With dead ends: 605
[2022-01-31 18:18:59,633 INFO L226 Difference]: Without dead ends: 498
[2022-01-31 18:18:59,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4654 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830
[2022-01-31 18:18:59,635 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 413 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 1390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 2521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1390 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-01-31 18:18:59,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 73 Invalid, 2521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1390 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-01-31 18:18:59,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states.
[2022-01-31 18:18:59,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 210.
[2022-01-31 18:18:59,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 204 states have (on average 1.0147058823529411) internal successors, (207), 204 states have internal predecessors, (207), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 18:18:59,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 212 transitions.
[2022-01-31 18:18:59,761 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 212 transitions. Word has length 204
[2022-01-31 18:18:59,761 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:18:59,761 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 212 transitions.
[2022-01-31 18:18:59,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 1.0808080808080809) internal successors, (107), 98 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 18:18:59,761 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 212 transitions.
[2022-01-31 18:18:59,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207
[2022-01-31 18:18:59,762 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:18:59,762 INFO L514 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:18:59,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97
[2022-01-31 18:18:59,762 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:18:59,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:18:59,762 INFO L85 PathProgramCache]: Analyzing trace with hash -790273977, now seen corresponding path program 96 times
[2022-01-31 18:18:59,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:18:59,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315559957]
[2022-01-31 18:18:59,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:18:59,763 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:18:59,763 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:18:59,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:18:59,773 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:18:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:19:02,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:19:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:19:02,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:19:02,850 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:19:02,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315559957]
[2022-01-31 18:19:02,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [315559957] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:19:02,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:19:02,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100
[2022-01-31 18:19:02,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708347064]
[2022-01-31 18:19:02,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:19:02,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states
[2022-01-31 18:19:02,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:19:02,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants.
[2022-01-31 18:19:02,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900
[2022-01-31 18:19:02,853 INFO L87 Difference]: Start difference. First operand 210 states and 212 transitions. Second operand has 100 states, 100 states have (on average 1.08) internal successors, (108), 99 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 18:19:19,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:19:19,744 INFO L93 Difference]: Finished difference Result 611 states and 713 transitions.
[2022-01-31 18:19:19,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states.
[2022-01-31 18:19:19,744 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.08) internal successors, (108), 99 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 206
[2022-01-31 18:19:19,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:19:19,746 INFO L225 Difference]: With dead ends: 611
[2022-01-31 18:19:19,746 INFO L226 Difference]: Without dead ends: 503
[2022-01-31 18:19:19,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4751 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=14553, Invalid=24059, Unknown=0, NotChecked=0, Total=38612
[2022-01-31 18:19:19,749 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 504 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 1665 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 2540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1665 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-01-31 18:19:19,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [505 Valid, 38 Invalid, 2540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1665 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-01-31 18:19:19,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states.
[2022-01-31 18:19:19,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 212.
[2022-01-31 18:19:19,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 206 states have (on average 1.0145631067961165) internal successors, (209), 206 states have internal predecessors, (209), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 18:19:19,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 214 transitions.
[2022-01-31 18:19:19,885 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 214 transitions. Word has length 206
[2022-01-31 18:19:19,885 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:19:19,885 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 214 transitions.
[2022-01-31 18:19:19,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 1.08) internal successors, (108), 99 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 18:19:19,886 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 214 transitions.
[2022-01-31 18:19:19,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209
[2022-01-31 18:19:19,886 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:19:19,887 INFO L514 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:19:19,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98
[2022-01-31 18:19:19,887 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:19:19,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:19:19,887 INFO L85 PathProgramCache]: Analyzing trace with hash 865483110, now seen corresponding path program 97 times
[2022-01-31 18:19:19,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:19:19,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662642177]
[2022-01-31 18:19:19,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:19:19,888 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:19:19,888 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:19:19,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:19:19,899 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:19:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:19:22,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:19:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:19:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:19:22,975 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:19:22,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662642177]
[2022-01-31 18:19:22,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1662642177] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:19:22,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:19:22,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101
[2022-01-31 18:19:22,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619051554]
[2022-01-31 18:19:22,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:19:22,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states
[2022-01-31 18:19:22,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:19:22,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants.
[2022-01-31 18:19:22,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100
[2022-01-31 18:19:22,979 INFO L87 Difference]: Start difference. First operand 212 states and 214 transitions. Second operand has 101 states, 101 states have (on average 1.0792079207920793) internal successors, (109), 100 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 18:19:40,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:19:40,498 INFO L93 Difference]: Finished difference Result 617 states and 720 transitions.
[2022-01-31 18:19:40,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states.
[2022-01-31 18:19:40,502 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.0792079207920793) internal successors, (109), 100 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 208
[2022-01-31 18:19:40,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:19:40,504 INFO L225 Difference]: With dead ends: 617
[2022-01-31 18:19:40,504 INFO L226 Difference]: Without dead ends: 508
[2022-01-31 18:19:40,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4849 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=14850, Invalid=24552, Unknown=0, NotChecked=0, Total=39402
[2022-01-31 18:19:40,507 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 653 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 2117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 3012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2117 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2022-01-31 18:19:40,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [654 Valid, 48 Invalid, 3012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2117 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2022-01-31 18:19:40,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states.
[2022-01-31 18:19:40,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 214.
[2022-01-31 18:19:40,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 208 states have (on average 1.0144230769230769) internal successors, (211), 208 states have internal predecessors, (211), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 18:19:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 216 transitions.
[2022-01-31 18:19:40,665 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 216 transitions. Word has length 208
[2022-01-31 18:19:40,665 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:19:40,665 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 216 transitions.
[2022-01-31 18:19:40,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.0792079207920793) internal successors, (109), 100 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 18:19:40,665 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 216 transitions.
[2022-01-31 18:19:40,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211
[2022-01-31 18:19:40,666 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:19:40,666 INFO L514 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:19:40,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99
[2022-01-31 18:19:40,667 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:19:40,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:19:40,667 INFO L85 PathProgramCache]: Analyzing trace with hash 234911527, now seen corresponding path program 98 times
[2022-01-31 18:19:40,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:19:40,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975886096]
[2022-01-31 18:19:40,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:19:40,668 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:19:40,668 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:19:40,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:19:40,681 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:19:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:19:43,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:19:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:19:43,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:19:43,814 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:19:43,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975886096]
[2022-01-31 18:19:43,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1975886096] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:19:43,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:19:43,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102
[2022-01-31 18:19:43,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939325041]
[2022-01-31 18:19:43,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:19:43,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states
[2022-01-31 18:19:43,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:19:43,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants.
[2022-01-31 18:19:43,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302
[2022-01-31 18:19:43,817 INFO L87 Difference]: Start difference. First operand 214 states and 216 transitions. Second operand has 102 states, 102 states have (on average 1.0784313725490196) internal successors, (110), 101 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 18:20:01,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:20:01,879 INFO L93 Difference]: Finished difference Result 623 states and 727 transitions.
[2022-01-31 18:20:01,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states.
[2022-01-31 18:20:01,879 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.0784313725490196) internal successors, (110), 101 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 210
[2022-01-31 18:20:01,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:20:01,881 INFO L225 Difference]: With dead ends: 623
[2022-01-31 18:20:01,881 INFO L226 Difference]: Without dead ends: 513
[2022-01-31 18:20:01,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4948 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=15150, Invalid=25050, Unknown=0, NotChecked=0, Total=40200
[2022-01-31 18:20:01,884 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 496 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 1646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1646 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-01-31 18:20:01,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 43 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1646 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-01-31 18:20:01,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states.
[2022-01-31 18:20:02,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 216.
[2022-01-31 18:20:02,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 210 states have (on average 1.0142857142857142) internal successors, (213), 210 states have internal predecessors, (213), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 18:20:02,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 218 transitions.
[2022-01-31 18:20:02,045 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 218 transitions. Word has length 210
[2022-01-31 18:20:02,045 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:20:02,045 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 218 transitions.
[2022-01-31 18:20:02,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.0784313725490196) internal successors, (110), 101 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 18:20:02,045 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 218 transitions.
[2022-01-31 18:20:02,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213
[2022-01-31 18:20:02,046 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:20:02,046 INFO L514 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:20:02,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100
[2022-01-31 18:20:02,046 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:20:02,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:20:02,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1481825146, now seen corresponding path program 99 times
[2022-01-31 18:20:02,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:20:02,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077246247]
[2022-01-31 18:20:02,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:20:02,048 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:20:02,048 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:20:02,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:20:02,059 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:20:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:20:05,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:20:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:20:05,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:20:05,237 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:20:05,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077246247]
[2022-01-31 18:20:05,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2077246247] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:20:05,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:20:05,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103
[2022-01-31 18:20:05,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464607827]
[2022-01-31 18:20:05,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:20:05,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states
[2022-01-31 18:20:05,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:20:05,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants.
[2022-01-31 18:20:05,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506
[2022-01-31 18:20:05,239 INFO L87 Difference]: Start difference. First operand 216 states and 218 transitions. Second operand has 103 states, 103 states have (on average 1.0776699029126213) internal successors, (111), 102 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 18:20:23,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:20:23,935 INFO L93 Difference]: Finished difference Result 629 states and 734 transitions.
[2022-01-31 18:20:23,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states.
[2022-01-31 18:20:23,935 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.0776699029126213) internal successors, (111), 102 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 212
[2022-01-31 18:20:23,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:20:23,936 INFO L225 Difference]: With dead ends: 629
[2022-01-31 18:20:23,936 INFO L226 Difference]: Without dead ends: 518
[2022-01-31 18:20:23,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5048 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006
[2022-01-31 18:20:23,939 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 434 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 1461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 2587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1461 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-01-31 18:20:23,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 58 Invalid, 2587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1461 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-01-31 18:20:23,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states.
[2022-01-31 18:20:24,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 218.
[2022-01-31 18:20:24,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 212 states have (on average 1.0141509433962264) internal successors, (215), 212 states have internal predecessors, (215), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 18:20:24,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 220 transitions.
[2022-01-31 18:20:24,081 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 220 transitions. Word has length 212
[2022-01-31 18:20:24,081 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:20:24,081 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 220 transitions.
[2022-01-31 18:20:24,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.0776699029126213) internal successors, (111), 102 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 18:20:24,081 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 220 transitions.
[2022-01-31 18:20:24,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215
[2022-01-31 18:20:24,082 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:20:24,082 INFO L514 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:20:24,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101
[2022-01-31 18:20:24,082 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:20:24,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:20:24,082 INFO L85 PathProgramCache]: Analyzing trace with hash -211511801, now seen corresponding path program 100 times
[2022-01-31 18:20:24,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:20:24,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078103866]
[2022-01-31 18:20:24,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:20:24,083 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:20:24,083 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:20:24,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:20:24,093 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:20:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:20:27,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:20:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:20:27,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:20:27,358 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:20:27,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078103866]
[2022-01-31 18:20:27,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1078103866] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:20:27,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:20:27,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104
[2022-01-31 18:20:27,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184162379]
[2022-01-31 18:20:27,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:20:27,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states
[2022-01-31 18:20:27,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:20:27,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants.
[2022-01-31 18:20:27,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712
[2022-01-31 18:20:27,361 INFO L87 Difference]: Start difference. First operand 218 states and 220 transitions. Second operand has 104 states, 104 states have (on average 1.0769230769230769) internal successors, (112), 103 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 18:20:46,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:20:46,640 INFO L93 Difference]: Finished difference Result 635 states and 741 transitions.
[2022-01-31 18:20:46,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states.
[2022-01-31 18:20:46,641 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.0769230769230769) internal successors, (112), 103 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 214
[2022-01-31 18:20:46,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:20:46,642 INFO L225 Difference]: With dead ends: 635
[2022-01-31 18:20:46,642 INFO L226 Difference]: Without dead ends: 523
[2022-01-31 18:20:46,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5149 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=15759, Invalid=26061, Unknown=0, NotChecked=0, Total=41820
[2022-01-31 18:20:46,645 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 528 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 1745 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1745 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2022-01-31 18:20:46,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 53 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1745 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2022-01-31 18:20:46,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states.
[2022-01-31 18:20:46,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 220.
[2022-01-31 18:20:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 214 states have (on average 1.014018691588785) internal successors, (217), 214 states have internal predecessors, (217), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 18:20:46,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 222 transitions.
[2022-01-31 18:20:46,790 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 222 transitions. Word has length 214
[2022-01-31 18:20:46,790 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:20:46,790 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 222 transitions.
[2022-01-31 18:20:46,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.0769230769230769) internal successors, (112), 103 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 18:20:46,790 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 222 transitions.
[2022-01-31 18:20:46,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217
[2022-01-31 18:20:46,790 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:20:46,791 INFO L514 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:20:46,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102
[2022-01-31 18:20:46,791 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:20:46,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:20:46,791 INFO L85 PathProgramCache]: Analyzing trace with hash 345573286, now seen corresponding path program 101 times
[2022-01-31 18:20:46,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:20:46,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76495100]
[2022-01-31 18:20:46,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:20:46,792 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:20:46,792 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:20:46,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:20:46,802 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:20:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:20:50,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:20:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:20:50,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:20:50,121 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:20:50,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76495100]
[2022-01-31 18:20:50,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [76495100] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:20:50,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:20:50,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105
[2022-01-31 18:20:50,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458498964]
[2022-01-31 18:20:50,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:20:50,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states
[2022-01-31 18:20:50,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:20:50,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants.
[2022-01-31 18:20:50,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920
[2022-01-31 18:20:50,124 INFO L87 Difference]: Start difference. First operand 220 states and 222 transitions. Second operand has 105 states, 105 states have (on average 1.0761904761904761) internal successors, (113), 104 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 18:21:09,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:21:09,865 INFO L93 Difference]: Finished difference Result 641 states and 748 transitions.
[2022-01-31 18:21:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states.
[2022-01-31 18:21:09,866 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 1.0761904761904761) internal successors, (113), 104 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 216
[2022-01-31 18:21:09,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:21:09,867 INFO L225 Difference]: With dead ends: 641
[2022-01-31 18:21:09,867 INFO L226 Difference]: Without dead ends: 528
[2022-01-31 18:21:09,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5251 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=16068, Invalid=26574, Unknown=0, NotChecked=0, Total=42642
[2022-01-31 18:21:09,870 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 471 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 1577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 2692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1577 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2022-01-31 18:21:09,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 83 Invalid, 2692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1577 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2022-01-31 18:21:09,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states.
[2022-01-31 18:21:10,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 222.
[2022-01-31 18:21:10,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 216 states have (on average 1.0138888888888888) internal successors, (219), 216 states have internal predecessors, (219), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 18:21:10,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 224 transitions.
[2022-01-31 18:21:10,022 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 224 transitions. Word has length 216
[2022-01-31 18:21:10,022 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:21:10,022 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 224 transitions.
[2022-01-31 18:21:10,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 1.0761904761904761) internal successors, (113), 104 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 18:21:10,022 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 224 transitions.
[2022-01-31 18:21:10,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219
[2022-01-31 18:21:10,023 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:21:10,023 INFO L514 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:21:10,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103
[2022-01-31 18:21:10,023 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:21:10,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:21:10,023 INFO L85 PathProgramCache]: Analyzing trace with hash -2024817433, now seen corresponding path program 102 times
[2022-01-31 18:21:10,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:21:10,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619049484]
[2022-01-31 18:21:10,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:21:10,025 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:21:10,025 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:21:10,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:21:10,036 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:21:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:21:13,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:21:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:21:13,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:21:13,435 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:21:13,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619049484]
[2022-01-31 18:21:13,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1619049484] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:21:13,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:21:13,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106
[2022-01-31 18:21:13,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821095670]
[2022-01-31 18:21:13,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:21:13,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states
[2022-01-31 18:21:13,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:21:13,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants.
[2022-01-31 18:21:13,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130
[2022-01-31 18:21:13,437 INFO L87 Difference]: Start difference. First operand 222 states and 224 transitions. Second operand has 106 states, 106 states have (on average 1.0754716981132075) internal successors, (114), 105 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 18:21:33,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:21:33,868 INFO L93 Difference]: Finished difference Result 647 states and 755 transitions.
[2022-01-31 18:21:33,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states.
[2022-01-31 18:21:33,868 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 1.0754716981132075) internal successors, (114), 105 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 218
[2022-01-31 18:21:33,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:21:33,870 INFO L225 Difference]: With dead ends: 647
[2022-01-31 18:21:33,870 INFO L226 Difference]: Without dead ends: 533
[2022-01-31 18:21:33,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5354 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=16380, Invalid=27092, Unknown=0, NotChecked=0, Total=43472
[2022-01-31 18:21:33,873 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 473 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 1585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 2631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1585 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-01-31 18:21:33,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 48 Invalid, 2631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1585 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-01-31 18:21:33,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states.
[2022-01-31 18:21:34,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 224.
[2022-01-31 18:21:34,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 218 states have (on average 1.0137614678899083) internal successors, (221), 218 states have internal predecessors, (221), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 18:21:34,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 226 transitions.
[2022-01-31 18:21:34,042 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 226 transitions. Word has length 218
[2022-01-31 18:21:34,042 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:21:34,042 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 226 transitions.
[2022-01-31 18:21:34,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 1.0754716981132075) internal successors, (114), 105 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 18:21:34,042 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 226 transitions.
[2022-01-31 18:21:34,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221
[2022-01-31 18:21:34,043 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:21:34,043 INFO L514 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:21:34,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104
[2022-01-31 18:21:34,043 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:21:34,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:21:34,044 INFO L85 PathProgramCache]: Analyzing trace with hash -178527546, now seen corresponding path program 103 times
[2022-01-31 18:21:34,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:21:34,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58287867]
[2022-01-31 18:21:34,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:21:34,045 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:21:34,045 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:21:34,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:21:34,056 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:21:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:21:37,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 18:21:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 18:21:37,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 18:21:37,523 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 18:21:37,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58287867]
[2022-01-31 18:21:37,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [58287867] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 18:21:37,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 18:21:37,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107
[2022-01-31 18:21:37,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736445657]
[2022-01-31 18:21:37,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 18:21:37,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states
[2022-01-31 18:21:37,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 18:21:37,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants.
[2022-01-31 18:21:37,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342
[2022-01-31 18:21:37,526 INFO L87 Difference]: Start difference. First operand 224 states and 226 transitions. Second operand has 107 states, 107 states have (on average 1.074766355140187) internal successors, (115), 106 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 18:21:58,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 18:21:58,702 INFO L93 Difference]: Finished difference Result 653 states and 762 transitions.
[2022-01-31 18:21:58,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states.
[2022-01-31 18:21:58,702 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.074766355140187) internal successors, (115), 106 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 220
[2022-01-31 18:21:58,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 18:21:58,703 INFO L225 Difference]: With dead ends: 653
[2022-01-31 18:21:58,703 INFO L226 Difference]: Without dead ends: 538
[2022-01-31 18:21:58,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5458 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310
[2022-01-31 18:21:58,706 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 531 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 1760 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1760 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2022-01-31 18:21:58,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 43 Invalid, 2803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1760 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2022-01-31 18:21:58,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states.
[2022-01-31 18:21:58,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 226.
[2022-01-31 18:21:58,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 220 states have (on average 1.0136363636363637) internal successors, (223), 220 states have internal predecessors, (223), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 18:21:58,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 228 transitions.
[2022-01-31 18:21:58,866 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 228 transitions. Word has length 220
[2022-01-31 18:21:58,866 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 18:21:58,866 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 228 transitions.
[2022-01-31 18:21:58,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.074766355140187) internal successors, (115), 106 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 18:21:58,866 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 228 transitions.
[2022-01-31 18:21:58,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223
[2022-01-31 18:21:58,867 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 18:21:58,867 INFO L514 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 18:21:58,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105
[2022-01-31 18:21:58,867 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 18:21:58,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 18:21:58,867 INFO L85 PathProgramCache]: Analyzing trace with hash 142601159, now seen corresponding path program 104 times
[2022-01-31 18:21:58,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 18:21:58,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692060256]
[2022-01-31 18:21:58,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 18:21:58,868 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult
[2022-01-31 18:21:58,868 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE
[2022-01-31 18:21:58,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 18:21:58,879 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 18:21:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat